<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2025 Workiva-->
<!--r:33fa4d7c-9c9c-498a-99ea-4bb3a3cc4fac,g:05ae6f2d-de88-4360-a7d1-0351665a9d0e-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://www.firstwatch.com/role/CONSOLIDATEDBALANCESHEETS" xlink:type="simple" xlink:href="fwrg-20241229.xsd#CONSOLIDATEDBALANCESHEETS"/>
  <link:calculationLink xlink:role="http://www.firstwatch.com/role/CONSOLIDATEDBALANCESHEETS" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_f3268e08-59b9-458a-bdd0-d82ee02fff1c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Liabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilities_ccb51d86-e5ef-4118-b403-7de0e7114a80" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeLiabilities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_f3268e08-59b9-458a-bdd0-d82ee02fff1c" xlink:to="loc_us-gaap_DerivativeLiabilities_ccb51d86-e5ef-4118-b403-7de0e7114a80" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_49175571-3322-4d9b-aaad-6f27addc6c47" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_f3268e08-59b9-458a-bdd0-d82ee02fff1c" xlink:to="loc_us-gaap_LiabilitiesCurrent_49175571-3322-4d9b-aaad-6f27addc6c47" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_6881f70a-ea1a-41d7-9f54-d35ddf29db99" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_f3268e08-59b9-458a-bdd0-d82ee02fff1c" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_6881f70a-ea1a-41d7-9f54-d35ddf29db99" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_48d985ed-1593-472e-8622-481b5edc32c8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_f3268e08-59b9-458a-bdd0-d82ee02fff1c" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_48d985ed-1593-472e-8622-481b5edc32c8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_34c57fb6-6fdf-4f6e-b00b-87befab8f31c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_f3268e08-59b9-458a-bdd0-d82ee02fff1c" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_34c57fb6-6fdf-4f6e-b00b-87befab8f31c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_2168a4a3-346e-416d-8d6e-559fd05e90cc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_f3268e08-59b9-458a-bdd0-d82ee02fff1c" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_2168a4a3-346e-416d-8d6e-559fd05e90cc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_d6df68eb-37cc-47d1-bb53-3dc8d839940f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_7068567e-6972-4bc3-a420-c403dcb94b1c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockholdersEquity"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_d6df68eb-37cc-47d1-bb53-3dc8d839940f" xlink:to="loc_us-gaap_StockholdersEquity_7068567e-6972-4bc3-a420-c403dcb94b1c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_7e0c1088-c662-42c9-9a81-b9a0e2beb8fd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommitmentsAndContingencies"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_d6df68eb-37cc-47d1-bb53-3dc8d839940f" xlink:to="loc_us-gaap_CommitmentsAndContingencies_7e0c1088-c662-42c9-9a81-b9a0e2beb8fd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_df9e6023-1360-4b41-814e-d51df4e0c0c5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Liabilities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_d6df68eb-37cc-47d1-bb53-3dc8d839940f" xlink:to="loc_us-gaap_Liabilities_df9e6023-1360-4b41-814e-d51df4e0c0c5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_ec2fa118-42d1-4816-b20e-991c0825414a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockValue_617f7c69-1a46-4781-a3c8-2bf91a068157" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PreferredStockValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_ec2fa118-42d1-4816-b20e-991c0825414a" xlink:to="loc_us-gaap_PreferredStockValue_617f7c69-1a46-4781-a3c8-2bf91a068157" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_fa004d54-258a-4785-9fdd-c295e017fae2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_ec2fa118-42d1-4816-b20e-991c0825414a" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_fa004d54-258a-4785-9fdd-c295e017fae2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapital_dab4c418-b67f-43d0-a764-dc7cb48ffa08" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AdditionalPaidInCapital"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_ec2fa118-42d1-4816-b20e-991c0825414a" xlink:to="loc_us-gaap_AdditionalPaidInCapital_dab4c418-b67f-43d0-a764-dc7cb48ffa08" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_830e9854-ff0d-4a7d-9308-476a04588ac7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_ec2fa118-42d1-4816-b20e-991c0825414a" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_830e9854-ff0d-4a7d-9308-476a04588ac7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_6224d002-406b-4f50-b2f6-48517a2d3aa3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockValue"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_ec2fa118-42d1-4816-b20e-991c0825414a" xlink:to="loc_us-gaap_CommonStockValue_6224d002-406b-4f50-b2f6-48517a2d3aa3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_77c48793-b728-4e9f-9dcf-9d6934a19c2f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Assets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_8e2bc21c-1347-4f43-966e-5dc5a294624d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_77c48793-b728-4e9f-9dcf-9d6934a19c2f" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_8e2bc21c-1347-4f43-966e-5dc5a294624d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_2fea9406-37bc-4751-8765-56716ec5f9d9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_77c48793-b728-4e9f-9dcf-9d6934a19c2f" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_2fea9406-37bc-4751-8765-56716ec5f9d9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_9e3bc2b6-b23e-4c10-9c09-996a07748247" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AssetsCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_77c48793-b728-4e9f-9dcf-9d6934a19c2f" xlink:to="loc_us-gaap_AssetsCurrent_9e3bc2b6-b23e-4c10-9c09-996a07748247" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_d87f611e-81cd-446a-99e0-16eae3c87425" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_77c48793-b728-4e9f-9dcf-9d6934a19c2f" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_d87f611e-81cd-446a-99e0-16eae3c87425" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_44ec57d2-6727-49d9-9f32-6c2ed5c22532" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_77c48793-b728-4e9f-9dcf-9d6934a19c2f" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_44ec57d2-6727-49d9-9f32-6c2ed5c22532" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_65217404-ba73-4d1b-913b-b6206d5044d3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Goodwill"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_77c48793-b728-4e9f-9dcf-9d6934a19c2f" xlink:to="loc_us-gaap_Goodwill_65217404-ba73-4d1b-913b-b6206d5044d3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_689e9d88-d900-4a8a-bdd2-49fe0ab3d396" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_fwrg_PortionOfLongTermDebtCurrent_eb5ac780-584f-466f-afe5-16c9bb5292e8" xlink:href="fwrg-20241229.xsd#fwrg_PortionOfLongTermDebtCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_689e9d88-d900-4a8a-bdd2-49fe0ab3d396" xlink:to="loc_fwrg_PortionOfLongTermDebtCurrent_eb5ac780-584f-466f-afe5-16c9bb5292e8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_63f9b529-1356-48af-9201-8b9efbb9e691" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccruedLiabilitiesCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_689e9d88-d900-4a8a-bdd2-49fe0ab3d396" xlink:to="loc_us-gaap_AccruedLiabilitiesCurrent_63f9b529-1356-48af-9201-8b9efbb9e691" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_adda444b-b890-4f77-944a-cf74b77615ae" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_689e9d88-d900-4a8a-bdd2-49fe0ab3d396" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_adda444b-b890-4f77-944a-cf74b77615ae" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_8961969a-c219-47f5-8741-81d129fd048c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ContractWithCustomerLiabilityCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_689e9d88-d900-4a8a-bdd2-49fe0ab3d396" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCurrent_8961969a-c219-47f5-8741-81d129fd048c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_ced1591d-2378-49e4-8ca0-f8601e66ee42" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_689e9d88-d900-4a8a-bdd2-49fe0ab3d396" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_ced1591d-2378-49e4-8ca0-f8601e66ee42" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrent_7b1ea433-6c21-41ee-86ba-8ea9a276fa20" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccountsPayableCurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_689e9d88-d900-4a8a-bdd2-49fe0ab3d396" xlink:to="loc_us-gaap_AccountsPayableCurrent_7b1ea433-6c21-41ee-86ba-8ea9a276fa20" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilitiesCurrent_6d8e37c3-1fad-4084-ac6e-7e521f422bc1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeLiabilitiesCurrent"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_689e9d88-d900-4a8a-bdd2-49fe0ab3d396" xlink:to="loc_us-gaap_DerivativeLiabilitiesCurrent_6d8e37c3-1fad-4084-ac6e-7e521f422bc1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_3b652829-94ff-4a45-805f-0653a317efb7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AssetsCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetsCurrent_46eefd84-7714-4ed0-80c8-8ccb0ed97c9f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeAssetsCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_3b652829-94ff-4a45-805f-0653a317efb7" xlink:to="loc_us-gaap_DerivativeAssetsCurrent_46eefd84-7714-4ed0-80c8-8ccb0ed97c9f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_6a748442-d719-40fd-8d40-701bb6b306d7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_3b652829-94ff-4a45-805f-0653a317efb7" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_6a748442-d719-40fd-8d40-701bb6b306d7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_e161054f-a1a3-4404-97ec-88edc9a4645c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_3b652829-94ff-4a45-805f-0653a317efb7" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_e161054f-a1a3-4404-97ec-88edc9a4645c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_a330b8ad-479b-470b-985b-1c8816c31a99" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InventoryNet"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_3b652829-94ff-4a45-805f-0653a317efb7" xlink:to="loc_us-gaap_InventoryNet_a330b8ad-479b-470b-985b-1c8816c31a99" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseCurrent_992aa3b1-ccfb-4b42-a8ba-6a4e1fd1c769" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PrepaidExpenseCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_3b652829-94ff-4a45-805f-0653a317efb7" xlink:to="loc_us-gaap_PrepaidExpenseCurrent_992aa3b1-ccfb-4b42-a8ba-6a4e1fd1c769" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashCurrent_5fe3a580-122a-4239-b69a-b9abd02a13b8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RestrictedCashCurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_3b652829-94ff-4a45-805f-0653a317efb7" xlink:to="loc_us-gaap_RestrictedCashCurrent_5fe3a580-122a-4239-b69a-b9abd02a13b8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsCurrent_551e2500-20eb-468c-9426-3d3f0937660f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherAssetsCurrent"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_3b652829-94ff-4a45-805f-0653a317efb7" xlink:to="loc_us-gaap_OtherAssetsCurrent_551e2500-20eb-468c-9426-3d3f0937660f" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.firstwatch.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONSANDCOMPREHENSIVEINCOMELOSS" xlink:type="simple" xlink:href="fwrg-20241229.xsd#CONSOLIDATEDSTATEMENTSOFOPERATIONSANDCOMPREHENSIVEINCOMELOSS"/>
  <link:calculationLink xlink:role="http://www.firstwatch.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONSANDCOMPREHENSIVEINCOMELOSS" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_b5e0a2fb-2aa1-4836-83ab-4e9fa4b09607" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_7c3fee23-545e-4976-9356-bca7e1aea23d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_b5e0a2fb-2aa1-4836-83ab-4e9fa4b09607" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_7c3fee23-545e-4976-9356-bca7e1aea23d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpenses_62586f3c-f718-40ae-a4c5-31bc7bb30dc7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CostsAndExpenses"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_b5e0a2fb-2aa1-4836-83ab-4e9fa4b09607" xlink:to="loc_us-gaap_CostsAndExpenses_62586f3c-f718-40ae-a4c5-31bc7bb30dc7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_146f13d9-4d52-4780-9732-95733d922d9c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent_28d1066f-56dc-4671-a9e3-76b096dfcc83" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_146f13d9-4d52-4780-9732-95733d922d9c" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent_28d1066f-56dc-4671-a9e3-76b096dfcc83" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1_c7fb4ab3-894b-4054-ad8f-96b4e263f8c4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_146f13d9-4d52-4780-9732-95733d922d9c" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1_c7fb4ab3-894b-4054-ad8f-96b4e263f8c4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_aa68fcb3-a042-42ec-9557-9410b6d578f3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_99e925f2-0d83-42e9-a8cd-77fe0fb19875" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_aa68fcb3-a042-42ec-9557-9410b6d578f3" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_99e925f2-0d83-42e9-a8cd-77fe0fb19875" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_d20105d0-944a-48a6-b6a8-8f8bdecb89f1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_aa68fcb3-a042-42ec-9557-9410b6d578f3" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_d20105d0-944a-48a6-b6a8-8f8bdecb89f1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_1d466ed7-be72-4e85-a279-5b14fa806851" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_1016f844-ea7b-4ec7-a2c5-dbebcf37d6fb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_1d466ed7-be72-4e85-a279-5b14fa806851" xlink:to="loc_us-gaap_OperatingIncomeLoss_1016f844-ea7b-4ec7-a2c5-dbebcf37d6fb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_297b4b54-07c9-4706-813e-8b0e866e9656" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_1d466ed7-be72-4e85-a279-5b14fa806851" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_297b4b54-07c9-4706-813e-8b0e866e9656" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseNonoperating_900f41d0-0df2-49f1-8eea-a9c1f80e1080" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestExpenseNonoperating"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_1d466ed7-be72-4e85-a279-5b14fa806851" xlink:to="loc_us-gaap_InterestExpenseNonoperating_900f41d0-0df2-49f1-8eea-a9c1f80e1080" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpenses_868982f2-2dcc-4b0f-b10a-8ac88e907f4d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CostsAndExpenses"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationAndAmortization_42b2cbfc-2623-4964-9352-0149a13d52ef" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DepreciationAndAmortization"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_868982f2-2dcc-4b0f-b10a-8ac88e907f4d" xlink:to="loc_us-gaap_DepreciationAndAmortization_42b2cbfc-2623-4964-9352-0149a13d52ef" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpense_6d291447-d37b-4ef7-bc5f-a537402bb54c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GeneralAndAdministrativeExpense"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_868982f2-2dcc-4b0f-b10a-8ac88e907f4d" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpense_6d291447-d37b-4ef7-bc5f-a537402bb54c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSalesOfAssetsAndAssetImpairmentCharges_f4da91f1-0192-434f-a78e-699b19ea7477" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GainLossOnSalesOfAssetsAndAssetImpairmentCharges"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_868982f2-2dcc-4b0f-b10a-8ac88e907f4d" xlink:to="loc_us-gaap_GainLossOnSalesOfAssetsAndAssetImpairmentCharges_f4da91f1-0192-434f-a78e-699b19ea7477" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostDirectLabor_d929dce2-84a3-4c45-89db-85637eac5333" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CostDirectLabor"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_868982f2-2dcc-4b0f-b10a-8ac88e907f4d" xlink:to="loc_us-gaap_CostDirectLabor_d929dce2-84a3-4c45-89db-85637eac5333" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreOpeningCosts_95386c6e-34e3-4c0c-9fea-a023b9523c26" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PreOpeningCosts"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_868982f2-2dcc-4b0f-b10a-8ac88e907f4d" xlink:to="loc_us-gaap_PreOpeningCosts_95386c6e-34e3-4c0c-9fea-a023b9523c26" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSoldOverhead_9828fbe2-5ae0-473b-90aa-079ad7b3ac42" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CostOfGoodsAndServicesSoldOverhead"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_868982f2-2dcc-4b0f-b10a-8ac88e907f4d" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSoldOverhead_9828fbe2-5ae0-473b-90aa-079ad7b3ac42" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_fwrg_TransactionIncomeExpenseNet_19b579c4-080c-4e75-bb9d-8f70fe1b9a13" xlink:href="fwrg-20241229.xsd#fwrg_TransactionIncomeExpenseNet"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_868982f2-2dcc-4b0f-b10a-8ac88e907f4d" xlink:to="loc_fwrg_TransactionIncomeExpenseNet_19b579c4-080c-4e75-bb9d-8f70fe1b9a13" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCostOfOperatingRevenue_46af2ff8-2dfb-4bd1-9e29-97ba76b53679" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherCostOfOperatingRevenue"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_868982f2-2dcc-4b0f-b10a-8ac88e907f4d" xlink:to="loc_us-gaap_OtherCostOfOperatingRevenue_46af2ff8-2dfb-4bd1-9e29-97ba76b53679" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostDirectMaterial_6cbeea01-efa2-4752-9b96-87756280d118" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CostDirectMaterial"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_868982f2-2dcc-4b0f-b10a-8ac88e907f4d" xlink:to="loc_us-gaap_CostDirectMaterial_6cbeea01-efa2-4752-9b96-87756280d118" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_480862b3-0615-4105-860c-268c3628de0a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ComprehensiveIncomeNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_9290b695-3073-4410-b3c6-3748c32ee486" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_480862b3-0615-4105-860c-268c3628de0a" xlink:to="loc_us-gaap_NetIncomeLoss_9290b695-3073-4410-b3c6-3748c32ee486" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_3ccf8edc-aa7c-4d0a-b43e-58633115be69" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_480862b3-0615-4105-860c-268c3628de0a" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_3ccf8edc-aa7c-4d0a-b43e-58633115be69" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.firstwatch.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" xlink:type="simple" xlink:href="fwrg-20241229.xsd#CONSOLIDATEDSTATEMENTSOFCASHFLOWS"/>
  <link:calculationLink xlink:role="http://www.firstwatch.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_60c31b91-3bf3-4f8c-9407-05174aa44131" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfOtherLongTermDebt_b71ad2f5-0b63-4bdc-9b56-61ea306f862b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RepaymentsOfOtherLongTermDebt"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_60c31b91-3bf3-4f8c-9407-05174aa44131" xlink:to="loc_us-gaap_RepaymentsOfOtherLongTermDebt_b71ad2f5-0b63-4bdc-9b56-61ea306f862b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromLongTermLinesOfCredit_5b71ef9a-56e7-4a96-bd6b-8723121ef3ac" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromLongTermLinesOfCredit"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_60c31b91-3bf3-4f8c-9407-05174aa44131" xlink:to="loc_us-gaap_ProceedsFromLongTermLinesOfCredit_5b71ef9a-56e7-4a96-bd6b-8723121ef3ac" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermLinesOfCredit_be5425bf-a465-484f-81ef-3b7520cf482c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RepaymentsOfLongTermLinesOfCredit"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_60c31b91-3bf3-4f8c-9407-05174aa44131" xlink:to="loc_us-gaap_RepaymentsOfLongTermLinesOfCredit_be5425bf-a465-484f-81ef-3b7520cf482c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfNotesPayable_3174b3f2-9024-40ed-ba1e-121935cb4444" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RepaymentsOfNotesPayable"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_60c31b91-3bf3-4f8c-9407-05174aa44131" xlink:to="loc_us-gaap_RepaymentsOfNotesPayable_3174b3f2-9024-40ed-ba1e-121935cb4444" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDebtIssuanceCosts_396ee6d1-f15a-40ff-af5e-b16363bca282" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsOfDebtIssuanceCosts"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_60c31b91-3bf3-4f8c-9407-05174aa44131" xlink:to="loc_us-gaap_PaymentsOfDebtIssuanceCosts_396ee6d1-f15a-40ff-af5e-b16363bca282" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_fwrg_NotePayableBorrowingsNetOfRepaymentsAndOther_789e82df-869a-4f21-b8ce-235d810e0833" xlink:href="fwrg-20241229.xsd#fwrg_NotePayableBorrowingsNetOfRepaymentsAndOther"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_60c31b91-3bf3-4f8c-9407-05174aa44131" xlink:to="loc_fwrg_NotePayableBorrowingsNetOfRepaymentsAndOther_789e82df-869a-4f21-b8ce-235d810e0833" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentForContingentConsiderationLiabilityFinancingActivities_fe207cfc-1544-449c-b9cd-f7fca86b11ce" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentForContingentConsiderationLiabilityFinancingActivities"/>
    <link:calculationArc order="7" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_60c31b91-3bf3-4f8c-9407-05174aa44131" xlink:to="loc_us-gaap_PaymentForContingentConsiderationLiabilityFinancingActivities_fe207cfc-1544-449c-b9cd-f7fca86b11ce" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfOtherLongTermDebt_202db9cc-52f4-4b06-8089-b7fb423cf928" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromIssuanceOfOtherLongTermDebt"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_60c31b91-3bf3-4f8c-9407-05174aa44131" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfOtherLongTermDebt_202db9cc-52f4-4b06-8089-b7fb423cf928" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromStockOptionsExercised_d90cef4e-da76-4302-bfac-d0a52c069bb7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromStockOptionsExercised"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_60c31b91-3bf3-4f8c-9407-05174aa44131" xlink:to="loc_us-gaap_ProceedsFromStockOptionsExercised_d90cef4e-da76-4302-bfac-d0a52c069bb7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_ab1723c1-60b5-45c8-ac1b-df501212bcc5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_a528c6c2-110f-4e66-9d44-7d648681bac6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_ab1723c1-60b5-45c8-ac1b-df501212bcc5" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_a528c6c2-110f-4e66-9d44-7d648681bac6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_f4323ca1-f657-42a7-bacb-968ae67db578" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_ab1723c1-60b5-45c8-ac1b-df501212bcc5" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_f4323ca1-f657-42a7-bacb-968ae67db578" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_b5c408ce-325f-4409-8990-56f698daf434" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_ab1723c1-60b5-45c8-ac1b-df501212bcc5" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_b5c408ce-325f-4409-8990-56f698daf434" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_fa54fca4-9d68-4d26-b3f8-ea80d2515a6d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_23db3b88-9704-406d-93fe-1ca8b5a63b08" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_fa54fca4-9d68-4d26-b3f8-ea80d2515a6d" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_23db3b88-9704-406d-93fe-1ca8b5a63b08" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromInsuranceSettlementInvestingActivities_6b16aece-9cbe-4b85-a382-65c0f35eb764" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromInsuranceSettlementInvestingActivities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_fa54fca4-9d68-4d26-b3f8-ea80d2515a6d" xlink:to="loc_us-gaap_ProceedsFromInsuranceSettlementInvestingActivities_6b16aece-9cbe-4b85-a382-65c0f35eb764" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireIntangibleAssets_56bbda47-6959-4055-b9a4-f1acaffaf486" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsToAcquireIntangibleAssets"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_fa54fca4-9d68-4d26-b3f8-ea80d2515a6d" xlink:to="loc_us-gaap_PaymentsToAcquireIntangibleAssets_56bbda47-6959-4055-b9a4-f1acaffaf486" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_88a6494e-7160-46b0-b98b-4bdd85c5b2d9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_fa54fca4-9d68-4d26-b3f8-ea80d2515a6d" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_88a6494e-7160-46b0-b98b-4bdd85c5b2d9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_83c56f57-ac11-4d51-8ac8-a963dc94b942" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedLiabilities_3b8a8b71-fe3e-4b39-ae16-c2d33de0fdb9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInAccruedLiabilities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_83c56f57-ac11-4d51-8ac8-a963dc94b942" xlink:to="loc_us-gaap_IncreaseDecreaseInAccruedLiabilities_3b8a8b71-fe3e-4b39-ae16-c2d33de0fdb9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_52f5a280-40be-45e5-a4e1-3098e4cdbd7c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_83c56f57-ac11-4d51-8ac8-a963dc94b942" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_52f5a280-40be-45e5-a4e1-3098e4cdbd7c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_55d98902-4efc-4cd4-9f44-008438ed6b6d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_83c56f57-ac11-4d51-8ac8-a963dc94b942" xlink:to="loc_us-gaap_NetIncomeLoss_55d98902-4efc-4cd4-9f44-008438ed6b6d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAssetAmortizationExpense_989892e6-8ab7-460f-acc1-06f2bdce54b0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseRightOfUseAssetAmortizationExpense"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_83c56f57-ac11-4d51-8ac8-a963dc94b942" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAssetAmortizationExpense_989892e6-8ab7-460f-acc1-06f2bdce54b0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets_3182bce5-cf05-48b9-b2a8-5f0b2beabd73" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInOtherOperatingAssets"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_83c56f57-ac11-4d51-8ac8-a963dc94b942" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets_3182bce5-cf05-48b9-b2a8-5f0b2beabd73" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInPrepaidExpense_17a64f7a-b3f6-4072-8202-8123f719769c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInPrepaidExpense"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_83c56f57-ac11-4d51-8ac8-a963dc94b942" xlink:to="loc_us-gaap_IncreaseDecreaseInPrepaidExpense_17a64f7a-b3f6-4072-8202-8123f719769c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInContractWithCustomerLiability_d3ea9fb4-c8ad-4880-9ae0-c694eacaf217" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInContractWithCustomerLiability"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_83c56f57-ac11-4d51-8ac8-a963dc94b942" xlink:to="loc_us-gaap_IncreaseDecreaseInContractWithCustomerLiability_d3ea9fb4-c8ad-4880-9ae0-c694eacaf217" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_e5efaf79-f7a5-4322-bd40-fc6d6a722b91" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable"/>
    <link:calculationArc order="8" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_83c56f57-ac11-4d51-8ac8-a963dc94b942" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_e5efaf79-f7a5-4322-bd40-fc6d6a722b91" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInInventories_ad971686-6b87-4431-8480-93a916f6f7b9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInInventories"/>
    <link:calculationArc order="9" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_83c56f57-ac11-4d51-8ac8-a963dc94b942" xlink:to="loc_us-gaap_IncreaseDecreaseInInventories_ad971686-6b87-4431-8480-93a916f6f7b9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayable_53d021a9-86fb-49d2-8395-70a6dc6bbff7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInAccountsPayable"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_83c56f57-ac11-4d51-8ac8-a963dc94b942" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayable_53d021a9-86fb-49d2-8395-70a6dc6bbff7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_c869281a-084e-48f9-8b40-bb7bcddc71c5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensation"/>
    <link:calculationArc order="11" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_83c56f57-ac11-4d51-8ac8-a963dc94b942" xlink:to="loc_us-gaap_ShareBasedCompensation_c869281a-084e-48f9-8b40-bb7bcddc71c5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationAndAmortization_b2e9af17-4cb6-4ca5-9748-40718d9a718b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DepreciationAndAmortization"/>
    <link:calculationArc order="12" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_83c56f57-ac11-4d51-8ac8-a963dc94b942" xlink:to="loc_us-gaap_DepreciationAndAmortization_b2e9af17-4cb6-4ca5-9748-40718d9a718b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfFinancingCostsAndDiscounts_0800021e-a7bf-4769-a915-85282c5bb718" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AmortizationOfFinancingCostsAndDiscounts"/>
    <link:calculationArc order="13" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_83c56f57-ac11-4d51-8ac8-a963dc94b942" xlink:to="loc_us-gaap_AmortizationOfFinancingCostsAndDiscounts_0800021e-a7bf-4769-a915-85282c5bb718" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_fwrg_GainLossOnModificationOfLease_8d12b7bb-3eab-4d9a-b323-da51b822c40a" xlink:href="fwrg-20241229.xsd#fwrg_GainLossOnModificationOfLease"/>
    <link:calculationArc order="14" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_83c56f57-ac11-4d51-8ac8-a963dc94b942" xlink:to="loc_fwrg_GainLossOnModificationOfLease_8d12b7bb-3eab-4d9a-b323-da51b822c40a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingLeaseLiability_cb14a1d8-6daf-42c6-86fc-0a16c371bef5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInOperatingLeaseLiability"/>
    <link:calculationArc order="15" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_83c56f57-ac11-4d51-8ac8-a963dc94b942" xlink:to="loc_us-gaap_IncreaseDecreaseInOperatingLeaseLiability_cb14a1d8-6daf-42c6-86fc-0a16c371bef5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_dd24182e-4690-47fe-910d-0bf229f4bccd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInOtherOperatingLiabilities"/>
    <link:calculationArc order="16" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_83c56f57-ac11-4d51-8ac8-a963dc94b942" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_dd24182e-4690-47fe-910d-0bf229f4bccd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities_b99b85ed-29d2-4606-a658-c99d17eb110a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities"/>
    <link:calculationArc order="17" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_83c56f57-ac11-4d51-8ac8-a963dc94b942" xlink:to="loc_us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities_b99b85ed-29d2-4606-a658-c99d17eb110a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSalesOfAssetsAndAssetImpairmentCharges_d7faad87-60a0-472a-8b6f-a52f16f671ee" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GainLossOnSalesOfAssetsAndAssetImpairmentCharges"/>
    <link:calculationArc order="18" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_83c56f57-ac11-4d51-8ac8-a963dc94b942" xlink:to="loc_us-gaap_GainLossOnSalesOfAssetsAndAssetImpairmentCharges_d7faad87-60a0-472a-8b6f-a52f16f671ee" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainOnBusinessInterruptionInsuranceRecovery_bad97086-6440-4033-adfe-9cee90472625" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GainOnBusinessInterruptionInsuranceRecovery"/>
    <link:calculationArc order="19" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_83c56f57-ac11-4d51-8ac8-a963dc94b942" xlink:to="loc_us-gaap_GainOnBusinessInterruptionInsuranceRecovery_bad97086-6440-4033-adfe-9cee90472625" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_b7d95dd1-26a6-42de-98f3-55bd30951c1d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
    <link:calculationArc order="20" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_83c56f57-ac11-4d51-8ac8-a963dc94b942" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_b7d95dd1-26a6-42de-98f3-55bd30951c1d" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.firstwatch.com/role/RevenuesDetailofContractLiabilitiesDetails" xlink:type="simple" xlink:href="fwrg-20241229.xsd#RevenuesDetailofContractLiabilitiesDetails"/>
  <link:calculationLink xlink:role="http://www.firstwatch.com/role/RevenuesDetailofContractLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_676b0d78-43c3-4c7d-8712-8210b407c32f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ContractWithCustomerLiabilityCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_fwrg_ContractWithCustomerLiabilityGiftCardRevenueCurrent_cba61493-c63e-4ee4-b048-733ef6fef849" xlink:href="fwrg-20241229.xsd#fwrg_ContractWithCustomerLiabilityGiftCardRevenueCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ContractWithCustomerLiabilityCurrent_676b0d78-43c3-4c7d-8712-8210b407c32f" xlink:to="loc_fwrg_ContractWithCustomerLiabilityGiftCardRevenueCurrent_cba61493-c63e-4ee4-b048-733ef6fef849" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_fwrg_ContractWithCustomerLiabilityFranchiseFeeRevenueCurrent_d356e138-caa3-4c2f-b7a1-6556c6ff0b1a" xlink:href="fwrg-20241229.xsd#fwrg_ContractWithCustomerLiabilityFranchiseFeeRevenueCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ContractWithCustomerLiabilityCurrent_676b0d78-43c3-4c7d-8712-8210b407c32f" xlink:to="loc_fwrg_ContractWithCustomerLiabilityFranchiseFeeRevenueCurrent_d356e138-caa3-4c2f-b7a1-6556c6ff0b1a" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.firstwatch.com/role/AccountsReceivableDetails" xlink:type="simple" xlink:href="fwrg-20241229.xsd#AccountsReceivableDetails"/>
  <link:calculationLink xlink:role="http://www.firstwatch.com/role/AccountsReceivableDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_2b80fec4-36dc-4977-8094-0d5148c47503" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_fwrg_AccountsReceivableAfterAllowanceForCreditLossOtherCurrent_cc47dc9f-9cd6-47f3-a043-fd7211fe4de9" xlink:href="fwrg-20241229.xsd#fwrg_AccountsReceivableAfterAllowanceForCreditLossOtherCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccountsReceivableNetCurrent_2b80fec4-36dc-4977-8094-0d5148c47503" xlink:to="loc_fwrg_AccountsReceivableAfterAllowanceForCreditLossOtherCurrent_cc47dc9f-9cd6-47f3-a043-fd7211fe4de9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_fwrg_AccountsReceivableAfterAllowanceForCreditLossFranchiseReceivablesCurrent_43c6ce6b-5e4c-4882-82c8-defef6bae053" xlink:href="fwrg-20241229.xsd#fwrg_AccountsReceivableAfterAllowanceForCreditLossFranchiseReceivablesCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccountsReceivableNetCurrent_2b80fec4-36dc-4977-8094-0d5148c47503" xlink:to="loc_fwrg_AccountsReceivableAfterAllowanceForCreditLossFranchiseReceivablesCurrent_43c6ce6b-5e4c-4882-82c8-defef6bae053" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_fwrg_AccountsReceivableAfterAllowanceForCreditLossRebatesCurrent_1a56c0ee-e7ae-45c4-8d17-45aaefc4074b" xlink:href="fwrg-20241229.xsd#fwrg_AccountsReceivableAfterAllowanceForCreditLossRebatesCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccountsReceivableNetCurrent_2b80fec4-36dc-4977-8094-0d5148c47503" xlink:to="loc_fwrg_AccountsReceivableAfterAllowanceForCreditLossRebatesCurrent_1a56c0ee-e7ae-45c4-8d17-45aaefc4074b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_fwrg_AccountsReceivableAfterAllowanceForCreditLossThirdPartyDeliveryProvidersCurrent_1e36d952-df5d-491f-8863-4832bc2e584b" xlink:href="fwrg-20241229.xsd#fwrg_AccountsReceivableAfterAllowanceForCreditLossThirdPartyDeliveryProvidersCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccountsReceivableNetCurrent_2b80fec4-36dc-4977-8094-0d5148c47503" xlink:to="loc_fwrg_AccountsReceivableAfterAllowanceForCreditLossThirdPartyDeliveryProvidersCurrent_1e36d952-df5d-491f-8863-4832bc2e584b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_fwrg_AccountsReceivableAfterAllowanceForCreditLossGiftCardSalesCurrent_b165ff51-ab5f-4e54-aab3-8102cb27782b" xlink:href="fwrg-20241229.xsd#fwrg_AccountsReceivableAfterAllowanceForCreditLossGiftCardSalesCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccountsReceivableNetCurrent_2b80fec4-36dc-4977-8094-0d5148c47503" xlink:to="loc_fwrg_AccountsReceivableAfterAllowanceForCreditLossGiftCardSalesCurrent_b165ff51-ab5f-4e54-aab3-8102cb27782b" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.firstwatch.com/role/IntangibleAssetsNetScheduleofIntangibleAssetsDetails" xlink:type="simple" xlink:href="fwrg-20241229.xsd#IntangibleAssetsNetScheduleofIntangibleAssetsDetails"/>
  <link:calculationLink xlink:role="http://www.firstwatch.com/role/IntangibleAssetsNetScheduleofIntangibleAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_d8034a60-4661-4beb-9c12-dd8813c41934" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_a2f09ed6-2b1d-44b3-8b15-579fd88e6f8d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_d8034a60-4661-4beb-9c12-dd8813c41934" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_a2f09ed6-2b1d-44b3-8b15-579fd88e6f8d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_4583de3b-140b-47c1-b77a-5497e7a14ceb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IntangibleAssetsGrossExcludingGoodwill"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_d8034a60-4661-4beb-9c12-dd8813c41934" xlink:to="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_4583de3b-140b-47c1-b77a-5497e7a14ceb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_5b1b4820-21d8-4339-9c31-59b9a8d69e55" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_d743d617-0497-423b-bd62-c317d9f9b330" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_5b1b4820-21d8-4339-9c31-59b9a8d69e55" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_d743d617-0497-423b-bd62-c317d9f9b330" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_d8cdf217-cf8c-443b-b41b-780a171ea716" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_5b1b4820-21d8-4339-9c31-59b9a8d69e55" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_d8cdf217-cf8c-443b-b41b-780a171ea716" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_39380bad-5b0f-4d93-b0bb-c097ad147cee" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IntangibleAssetsGrossExcludingGoodwill"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_ca46dc3b-8f53-4788-8b5a-2852c781f988" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_39380bad-5b0f-4d93-b0bb-c097ad147cee" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_ca46dc3b-8f53-4788-8b5a-2852c781f988" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_c7ba93af-e7b3-4b65-a076-c6c3c1b08fc1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_39380bad-5b0f-4d93-b0bb-c097ad147cee" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_c7ba93af-e7b3-4b65-a076-c6c3c1b08fc1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_fwrg_IndefiniteLivedIntangibleAssetsNetExcludingGoodwill_20744e8b-9293-498b-81a5-c8f3d81bf71c" xlink:href="fwrg-20241229.xsd#fwrg_IndefiniteLivedIntangibleAssetsNetExcludingGoodwill"/>
    <link:loc xlink:type="locator" xlink:label="loc_fwrg_IndefiniteLivedIntangibleAssetsAccumulatedAmortization_e281fb8b-cb3d-47d2-afc5-e398be395643" xlink:href="fwrg-20241229.xsd#fwrg_IndefiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_fwrg_IndefiniteLivedIntangibleAssetsNetExcludingGoodwill_20744e8b-9293-498b-81a5-c8f3d81bf71c" xlink:to="loc_fwrg_IndefiniteLivedIntangibleAssetsAccumulatedAmortization_e281fb8b-cb3d-47d2-afc5-e398be395643" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_95ab0812-7ab7-4f57-ad50-7202d806a23e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_fwrg_IndefiniteLivedIntangibleAssetsNetExcludingGoodwill_20744e8b-9293-498b-81a5-c8f3d81bf71c" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_95ab0812-7ab7-4f57-ad50-7202d806a23e" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.firstwatch.com/role/IntangibleAssetsNetScheduleofIntangibleAssetsDetails_1" xlink:type="simple" xlink:href="fwrg-20241229.xsd#IntangibleAssetsNetScheduleofIntangibleAssetsDetails_1"/>
  <link:calculationLink xlink:role="http://www.firstwatch.com/role/IntangibleAssetsNetScheduleofIntangibleAssetsDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_95cdafe1-493d-4767-b820-ba35a8ac43ee" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_271e1496-fdd8-4338-888a-3b6e7f6a64be" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_95cdafe1-493d-4767-b820-ba35a8ac43ee" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_271e1496-fdd8-4338-888a-3b6e7f6a64be" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_eba53610-25f2-4b3c-9293-02d71c2df78e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_95cdafe1-493d-4767-b820-ba35a8ac43ee" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_eba53610-25f2-4b3c-9293-02d71c2df78e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_2dba354c-dc0a-4ad7-9d77-531deb705ff6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_89425b85-ec9f-4060-bb3c-09cc5fa48915" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_2dba354c-dc0a-4ad7-9d77-531deb705ff6" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_89425b85-ec9f-4060-bb3c-09cc5fa48915" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_fwrg_IndefiniteLivedIntangibleAssetsNetExcludingGoodwill_fe845025-c74c-497e-a2eb-ddf546fa2633" xlink:href="fwrg-20241229.xsd#fwrg_IndefiniteLivedIntangibleAssetsNetExcludingGoodwill"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_2dba354c-dc0a-4ad7-9d77-531deb705ff6" xlink:to="loc_fwrg_IndefiniteLivedIntangibleAssetsNetExcludingGoodwill_fe845025-c74c-497e-a2eb-ddf546fa2633" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.firstwatch.com/role/PropertyFixturesandEquipmentScheduleofPropertyFixturesandEquipmentNetDetails" xlink:type="simple" xlink:href="fwrg-20241229.xsd#PropertyFixturesandEquipmentScheduleofPropertyFixturesandEquipmentNetDetails"/>
  <link:calculationLink xlink:role="http://www.firstwatch.com/role/PropertyFixturesandEquipmentScheduleofPropertyFixturesandEquipmentNetDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_fwrg_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortizationExcludingConstructionInProgress_e818683e-e934-492a-9bb7-dd0cc0174602" xlink:href="fwrg-20241229.xsd#fwrg_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortizationExcludingConstructionInProgress"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_b725d3ce-3688-424b-a244-102c9074df37" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_fwrg_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortizationExcludingConstructionInProgress_e818683e-e934-492a-9bb7-dd0cc0174602" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_b725d3ce-3688-424b-a244-102c9074df37" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization_5632d5bc-e6ae-4c66-9e28-22dd1eaa9f02" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_fwrg_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortizationExcludingConstructionInProgress_e818683e-e934-492a-9bb7-dd0cc0174602" xlink:to="loc_us-gaap_FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization_5632d5bc-e6ae-4c66-9e28-22dd1eaa9f02" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_2bdd96bf-5dda-484b-b46e-db8ab6b2695f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization"/>
    <link:loc xlink:type="locator" xlink:label="loc_fwrg_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortizationExcludingConstructionInProgress_3257ed8a-de05-443c-bb6f-cf9aa4af5d33" xlink:href="fwrg-20241229.xsd#fwrg_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortizationExcludingConstructionInProgress"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_2bdd96bf-5dda-484b-b46e-db8ab6b2695f" xlink:to="loc_fwrg_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortizationExcludingConstructionInProgress_3257ed8a-de05-443c-bb6f-cf9aa4af5d33" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConstructionInProgressGross_7847251a-de5e-4568-8542-fea9223b8024" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConstructionInProgressGross"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_2bdd96bf-5dda-484b-b46e-db8ab6b2695f" xlink:to="loc_us-gaap_ConstructionInProgressGross_7847251a-de5e-4568-8542-fea9223b8024" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization_c8a228b9-80b9-4c7b-8701-85bf485efc27" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_2bdd96bf-5dda-484b-b46e-db8ab6b2695f" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization_c8a228b9-80b9-4c7b-8701-85bf485efc27" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.firstwatch.com/role/AccruedLiabilitiesDetails" xlink:type="simple" xlink:href="fwrg-20241229.xsd#AccruedLiabilitiesDetails"/>
  <link:calculationLink xlink:role="http://www.firstwatch.com/role/AccruedLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_bfa13a26-1dac-40e1-909d-773afed0c47e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccruedLiabilitiesCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_fwrg_AccruedCommonAreaMaintenanceCurrent_65a6ae03-f766-4196-a8ed-b4106385e3ff" xlink:href="fwrg-20241229.xsd#fwrg_AccruedCommonAreaMaintenanceCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_bfa13a26-1dac-40e1-909d-773afed0c47e" xlink:to="loc_fwrg_AccruedCommonAreaMaintenanceCurrent_65a6ae03-f766-4196-a8ed-b4106385e3ff" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SalesAndExciseTaxPayableCurrent_45d88bc9-875c-4dae-a1c8-00df06ebe85b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SalesAndExciseTaxPayableCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_bfa13a26-1dac-40e1-909d-773afed0c47e" xlink:to="loc_us-gaap_SalesAndExciseTaxPayableCurrent_45d88bc9-875c-4dae-a1c8-00df06ebe85b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAccruedLiabilitiesCurrent_aaf0dd5b-e907-441f-bfda-25ae93096af9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherAccruedLiabilitiesCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_bfa13a26-1dac-40e1-909d-773afed0c47e" xlink:to="loc_us-gaap_OtherAccruedLiabilitiesCurrent_aaf0dd5b-e907-441f-bfda-25ae93096af9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedUtilitiesCurrent_e365b0fc-bf2a-48cf-80ad-937c959f04d0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccruedUtilitiesCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_bfa13a26-1dac-40e1-909d-773afed0c47e" xlink:to="loc_us-gaap_AccruedUtilitiesCurrent_e365b0fc-bf2a-48cf-80ad-937c959f04d0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccrualForTaxesOtherThanIncomeTaxesCurrent_4fafb106-1b4e-4d74-952c-7a9df20928eb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccrualForTaxesOtherThanIncomeTaxesCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_bfa13a26-1dac-40e1-909d-773afed0c47e" xlink:to="loc_us-gaap_AccrualForTaxesOtherThanIncomeTaxesCurrent_4fafb106-1b4e-4d74-952c-7a9df20928eb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_fwrg_AccruedCreditCardFeesCurrent_12db82bd-d26c-43c6-ab40-adace2fd706c" xlink:href="fwrg-20241229.xsd#fwrg_AccruedCreditCardFeesCurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_bfa13a26-1dac-40e1-909d-773afed0c47e" xlink:to="loc_fwrg_AccruedCreditCardFeesCurrent_12db82bd-d26c-43c6-ab40-adace2fd706c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConstructionPayableCurrent_f19cad7a-75a1-4b72-a88a-993954457cd3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ConstructionPayableCurrent"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_bfa13a26-1dac-40e1-909d-773afed0c47e" xlink:to="loc_us-gaap_ConstructionPayableCurrent_f19cad7a-75a1-4b72-a88a-993954457cd3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestPayableCurrent_c52bea97-47e4-43d7-8c42-690f22858c09" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestPayableCurrent"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_bfa13a26-1dac-40e1-909d-773afed0c47e" xlink:to="loc_us-gaap_InterestPayableCurrent_c52bea97-47e4-43d7-8c42-690f22858c09" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedInsuranceCurrent_de554628-2fa0-49df-9636-713f8f088a96" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccruedInsuranceCurrent"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_bfa13a26-1dac-40e1-909d-773afed0c47e" xlink:to="loc_us-gaap_AccruedInsuranceCurrent_de554628-2fa0-49df-9636-713f8f088a96" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_fwrg_AccruedLiabilitiesOperatingLeasesContingentRentalsCurrent_e4bca4dc-19a2-4ccc-9058-c99233169b1e" xlink:href="fwrg-20241229.xsd#fwrg_AccruedLiabilitiesOperatingLeasesContingentRentalsCurrent"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_bfa13a26-1dac-40e1-909d-773afed0c47e" xlink:to="loc_fwrg_AccruedLiabilitiesOperatingLeasesContingentRentalsCurrent_e4bca4dc-19a2-4ccc-9058-c99233169b1e" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.firstwatch.com/role/DebtLongTermDebtNetDetails" xlink:type="simple" xlink:href="fwrg-20241229.xsd#DebtLongTermDebtNetDetails"/>
  <link:calculationLink xlink:role="http://www.firstwatch.com/role/DebtLongTermDebtNetDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtAndCapitalLeaseObligations_4205be8b-7b1c-4a6e-a007-ade0764e941c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtAndCapitalLeaseObligations"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_ef64a23b-881e-48a1-b0a2-2371331cf20a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtAndCapitalLeaseObligations_4205be8b-7b1c-4a6e-a007-ade0764e941c" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_ef64a23b-881e-48a1-b0a2-2371331cf20a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiability_077f0026-014c-4c15-accc-e86e8f6bb781" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinanceLeaseLiability"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtAndCapitalLeaseObligations_4205be8b-7b1c-4a6e-a007-ade0764e941c" xlink:to="loc_us-gaap_FinanceLeaseLiability_077f0026-014c-4c15-accc-e86e8f6bb781" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_31c6f772-1199-4b68-b652-33830dd7164a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtAndCapitalLeaseObligations_4205be8b-7b1c-4a6e-a007-ade0764e941c" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_31c6f772-1199-4b68-b652-33830dd7164a" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.firstwatch.com/role/DebtLongTermDebtNetDetails_1" xlink:type="simple" xlink:href="fwrg-20241229.xsd#DebtLongTermDebtNetDetails_1"/>
  <link:calculationLink xlink:role="http://www.firstwatch.com/role/DebtLongTermDebtNetDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtAndCapitalLeaseObligations_49f5ac80-a375-43d9-aebf-53889cba22f7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtAndCapitalLeaseObligations"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_44396309-4b6c-4710-ae90-209f5f9b5ef9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtAndCapitalLeaseObligations_49f5ac80-a375-43d9-aebf-53889cba22f7" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_44396309-4b6c-4710-ae90-209f5f9b5ef9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_5471b44e-b6fa-48a3-94fd-9c91f8911f3d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtAndCapitalLeaseObligations_49f5ac80-a375-43d9-aebf-53889cba22f7" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_5471b44e-b6fa-48a3-94fd-9c91f8911f3d" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.firstwatch.com/role/DebtScheduleofMaturitiesofLongtermDebtDetails" xlink:type="simple" xlink:href="fwrg-20241229.xsd#DebtScheduleofMaturitiesofLongtermDebtDetails"/>
  <link:calculationLink xlink:role="http://www.firstwatch.com/role/DebtScheduleofMaturitiesofLongtermDebtDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_5e5e7c0f-5f27-47fc-86c9-14344868224f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_39d7215b-9c1c-4d37-a893-f6d3d33523d2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_5e5e7c0f-5f27-47fc-86c9-14344868224f" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_39d7215b-9c1c-4d37-a893-f6d3d33523d2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_b63a13df-afa3-4082-998e-9adda356a741" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_5e5e7c0f-5f27-47fc-86c9-14344868224f" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_b63a13df-afa3-4082-998e-9adda356a741" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_2f699c2f-220d-49ec-b2fd-1b2262a0bef6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_5e5e7c0f-5f27-47fc-86c9-14344868224f" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_2f699c2f-220d-49ec-b2fd-1b2262a0bef6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_3ab437ad-9169-4ff2-b7b4-0324c5bd8e89" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_5e5e7c0f-5f27-47fc-86c9-14344868224f" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_3ab437ad-9169-4ff2-b7b4-0324c5bd8e89" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_e57fe2b7-b14a-4714-920b-cd4d695e4935" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_5e5e7c0f-5f27-47fc-86c9-14344868224f" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_e57fe2b7-b14a-4714-920b-cd4d695e4935" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.firstwatch.com/role/LeasesLeaseAssetsandLeaseLiabilitiesDetails" xlink:type="simple" xlink:href="fwrg-20241229.xsd#LeasesLeaseAssetsandLeaseLiabilitiesDetails"/>
  <link:calculationLink xlink:role="http://www.firstwatch.com/role/LeasesLeaseAssetsandLeaseLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_fwrg_LeaseLiability_671ed14a-55fc-4317-b1d6-d0779fb54278" xlink:href="fwrg-20241229.xsd#fwrg_LeaseLiability"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_3abd23ce-54d2-418e-9dd6-cf64e7e1ca5f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_fwrg_LeaseLiability_671ed14a-55fc-4317-b1d6-d0779fb54278" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_3abd23ce-54d2-418e-9dd6-cf64e7e1ca5f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityCurrent_b183820e-484b-41fb-a31e-34f71282852d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinanceLeaseLiabilityCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_fwrg_LeaseLiability_671ed14a-55fc-4317-b1d6-d0779fb54278" xlink:to="loc_us-gaap_FinanceLeaseLiabilityCurrent_b183820e-484b-41fb-a31e-34f71282852d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_37f175d8-9617-4686-8738-48507c6fc17a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinanceLeaseLiabilityNoncurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_fwrg_LeaseLiability_671ed14a-55fc-4317-b1d6-d0779fb54278" xlink:to="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_37f175d8-9617-4686-8738-48507c6fc17a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_6ae79e8f-3cd6-44af-ba5d-e0bce103e93a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_fwrg_LeaseLiability_671ed14a-55fc-4317-b1d6-d0779fb54278" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_6ae79e8f-3cd6-44af-ba5d-e0bce103e93a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_fwrg_LeaseRightOfUseAsset_c6b894cf-c5dc-4ca5-83c1-bbcd45c07727" xlink:href="fwrg-20241229.xsd#fwrg_LeaseRightOfUseAsset"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseRightOfUseAsset_5bd5c7cf-4b21-46ea-b353-049e4ea2a9c9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinanceLeaseRightOfUseAsset"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_fwrg_LeaseRightOfUseAsset_c6b894cf-c5dc-4ca5-83c1-bbcd45c07727" xlink:to="loc_us-gaap_FinanceLeaseRightOfUseAsset_5bd5c7cf-4b21-46ea-b353-049e4ea2a9c9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_3451828f-5b73-44b4-aa30-2a66ebe7db03" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_fwrg_LeaseRightOfUseAsset_c6b894cf-c5dc-4ca5-83c1-bbcd45c07727" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_3451828f-5b73-44b4-aa30-2a66ebe7db03" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.firstwatch.com/role/LeasesComponentsofLeaseExpenseDetails" xlink:type="simple" xlink:href="fwrg-20241229.xsd#LeasesComponentsofLeaseExpenseDetails"/>
  <link:calculationLink xlink:role="http://www.firstwatch.com/role/LeasesComponentsofLeaseExpenseDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseCost_c702f84d-23bd-4469-8046-467d073b52d5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LeaseCost"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableLeaseCost_a6877918-161e-4f33-85b1-792cf9bc4ae0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_VariableLeaseCost"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_c702f84d-23bd-4469-8046-467d073b52d5" xlink:to="loc_us-gaap_VariableLeaseCost_a6877918-161e-4f33-85b1-792cf9bc4ae0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseCost_2f7cdac5-b94e-4ab6-b7c9-7dc98d1df134" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseCost"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_c702f84d-23bd-4469-8046-467d073b52d5" xlink:to="loc_us-gaap_OperatingLeaseCost_2f7cdac5-b94e-4ab6-b7c9-7dc98d1df134" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseRightOfUseAssetAmortization_1db3ffdc-8f23-4529-a28a-5f038c783291" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinanceLeaseRightOfUseAssetAmortization"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_c702f84d-23bd-4469-8046-467d073b52d5" xlink:to="loc_us-gaap_FinanceLeaseRightOfUseAssetAmortization_1db3ffdc-8f23-4529-a28a-5f038c783291" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseInterestExpense_e1b5b9f2-a142-4912-8eb8-f4acbc26dcec" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinanceLeaseInterestExpense"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_c702f84d-23bd-4469-8046-467d073b52d5" xlink:to="loc_us-gaap_FinanceLeaseInterestExpense_e1b5b9f2-a142-4912-8eb8-f4acbc26dcec" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.firstwatch.com/role/LeasesOperatingandFinanceLeaseMaturityDetails" xlink:type="simple" xlink:href="fwrg-20241229.xsd#LeasesOperatingandFinanceLeaseMaturityDetails"/>
  <link:calculationLink xlink:role="http://www.firstwatch.com/role/LeasesOperatingandFinanceLeaseMaturityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_f191f911-ea54-4a25-9c62-d43081f1f310" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_1c888674-274e-4903-9efe-92f08d9c0b03" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_f191f911-ea54-4a25-9c62-d43081f1f310" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_1c888674-274e-4903-9efe-92f08d9c0b03" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_c48bfbe7-ef88-427d-bfc2-72afae86dce8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_f191f911-ea54-4a25-9c62-d43081f1f310" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_c48bfbe7-ef88-427d-bfc2-72afae86dce8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_d450a162-e86f-4b04-8c3b-cd5528cb8233" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_f191f911-ea54-4a25-9c62-d43081f1f310" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_d450a162-e86f-4b04-8c3b-cd5528cb8233" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_e0148907-a15b-4ae4-ae23-0b7048bc3dbc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_f191f911-ea54-4a25-9c62-d43081f1f310" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_e0148907-a15b-4ae4-ae23-0b7048bc3dbc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_def2a2a3-13e8-429a-9bf8-275351286c56" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_f191f911-ea54-4a25-9c62-d43081f1f310" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_def2a2a3-13e8-429a-9bf8-275351286c56" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_44855097-fd88-4da6-93d1-676fbe4b4f4d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_f191f911-ea54-4a25-9c62-d43081f1f310" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_44855097-fd88-4da6-93d1-676fbe4b4f4d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_41b30401-dae5-442a-9fe7-1d556ae292f9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_b15468c3-3333-4a2c-8822-200a75bf09c3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_41b30401-dae5-442a-9fe7-1d556ae292f9" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_b15468c3-3333-4a2c-8822-200a75bf09c3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_fwrg_FinanceLeaseLiabilityToBePaidYearTwoNet_848216b0-f0d4-45fd-b602-77586850490a" xlink:href="fwrg-20241229.xsd#fwrg_FinanceLeaseLiabilityToBePaidYearTwoNet"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_41b30401-dae5-442a-9fe7-1d556ae292f9" xlink:to="loc_fwrg_FinanceLeaseLiabilityToBePaidYearTwoNet_848216b0-f0d4-45fd-b602-77586850490a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths_256a163a-5b71-4ed7-9063-03bb363be191" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_41b30401-dae5-442a-9fe7-1d556ae292f9" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths_256a163a-5b71-4ed7-9063-03bb363be191" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_9995c036-3929-48de-96e3-d1e8ef80487b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_41b30401-dae5-442a-9fe7-1d556ae292f9" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_9995c036-3929-48de-96e3-d1e8ef80487b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive_a03caf0c-f9fe-47d7-ab2a-1a9bad2781ec" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_41b30401-dae5-442a-9fe7-1d556ae292f9" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive_a03caf0c-f9fe-47d7-ab2a-1a9bad2781ec" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_f44bd079-e634-4586-a0b1-68c4be9d85e3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_41b30401-dae5-442a-9fe7-1d556ae292f9" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_f44bd079-e634-4586-a0b1-68c4be9d85e3" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.firstwatch.com/role/LeasesOperatingandFinanceLeaseMaturityDetails_1" xlink:type="simple" xlink:href="fwrg-20241229.xsd#LeasesOperatingandFinanceLeaseMaturityDetails_1"/>
  <link:calculationLink xlink:role="http://www.firstwatch.com/role/LeasesOperatingandFinanceLeaseMaturityDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_58106d6c-843c-4cc2-a2b5-cac0bba8f32d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_99eeab1c-f67d-4832-96bc-eedd128b7301" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseLiability"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_58106d6c-843c-4cc2-a2b5-cac0bba8f32d" xlink:to="loc_us-gaap_OperatingLeaseLiability_99eeab1c-f67d-4832-96bc-eedd128b7301" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_7b18d7b2-0561-40aa-83b0-b938d96313ed" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_58106d6c-843c-4cc2-a2b5-cac0bba8f32d" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_7b18d7b2-0561-40aa-83b0-b938d96313ed" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_b1aa646f-044c-4108-8b34-912342fe91bd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiability_3d452c88-8d89-4fe9-966d-3d28d7409c4b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinanceLeaseLiability"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_b1aa646f-044c-4108-8b34-912342fe91bd" xlink:to="loc_us-gaap_FinanceLeaseLiability_3d452c88-8d89-4fe9-966d-3d28d7409c4b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_24739753-49b8-4eca-8685-e665a188acf1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_b1aa646f-044c-4108-8b34-912342fe91bd" xlink:to="loc_us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_24739753-49b8-4eca-8685-e665a188acf1" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.firstwatch.com/role/TransactionExpensesIncomeNetScheduleofTransactionIncomeExpensesNetDetails" xlink:type="simple" xlink:href="fwrg-20241229.xsd#TransactionExpensesIncomeNetScheduleofTransactionIncomeExpensesNetDetails"/>
  <link:calculationLink xlink:role="http://www.firstwatch.com/role/TransactionExpensesIncomeNetScheduleofTransactionIncomeExpensesNetDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_fwrg_TransactionIncomeExpenseNet_434e8052-4e19-4f5a-8f6a-6d106765810c" xlink:href="fwrg-20241229.xsd#fwrg_TransactionIncomeExpenseNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_fwrg_OfferingAndRegistrationCosts_d36d1305-bef9-4bb3-b454-41b6f05f9af8" xlink:href="fwrg-20241229.xsd#fwrg_OfferingAndRegistrationCosts"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_fwrg_TransactionIncomeExpenseNet_434e8052-4e19-4f5a-8f6a-6d106765810c" xlink:to="loc_fwrg_OfferingAndRegistrationCosts_d36d1305-bef9-4bb3-b454-41b6f05f9af8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1_7b60d734-dac2-48eb-8d77-036fa1e997e0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_fwrg_TransactionIncomeExpenseNet_434e8052-4e19-4f5a-8f6a-6d106765810c" xlink:to="loc_us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1_7b60d734-dac2-48eb-8d77-036fa1e997e0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_fwrg_CreditAgreementModification_2de6ead7-d0b4-44ed-8a3a-05d12e1ab684" xlink:href="fwrg-20241229.xsd#fwrg_CreditAgreementModification"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_fwrg_TransactionIncomeExpenseNet_434e8052-4e19-4f5a-8f6a-6d106765810c" xlink:to="loc_fwrg_CreditAgreementModification_2de6ead7-d0b4-44ed-8a3a-05d12e1ab684" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_47f84009-1910-4067-b84f-94ea946aac53" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GainLossOnSaleOfPropertyPlantEquipment"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_fwrg_TransactionIncomeExpenseNet_434e8052-4e19-4f5a-8f6a-6d106765810c" xlink:to="loc_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_47f84009-1910-4067-b84f-94ea946aac53" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_fwrg_TransactionIncomeExpenseOther_adee449a-b388-4d15-bea2-b1a1ceb817ba" xlink:href="fwrg-20241229.xsd#fwrg_TransactionIncomeExpenseOther"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_fwrg_TransactionIncomeExpenseNet_434e8052-4e19-4f5a-8f6a-6d106765810c" xlink:to="loc_fwrg_TransactionIncomeExpenseOther_adee449a-b388-4d15-bea2-b1a1ceb817ba" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_1cefa581-0919-4806-b6a6-6afe5454e2ee" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationAcquisitionRelatedCosts"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_fwrg_TransactionIncomeExpenseNet_434e8052-4e19-4f5a-8f6a-6d106765810c" xlink:to="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_1cefa581-0919-4806-b6a6-6afe5454e2ee" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.firstwatch.com/role/IncomeTaxesScheduleofComponentsofIncomeTaxExpenseBenefitDetails" xlink:type="simple" xlink:href="fwrg-20241229.xsd#IncomeTaxesScheduleofComponentsofIncomeTaxExpenseBenefitDetails"/>
  <link:calculationLink xlink:role="http://www.firstwatch.com/role/IncomeTaxesScheduleofComponentsofIncomeTaxExpenseBenefitDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_49a69c27-f017-4a51-aee6-c1271b77f4d1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFederalIncomeTaxExpenseBenefit_2ec87ab9-ba67-425b-ab91-9b3e99073e2f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredFederalIncomeTaxExpenseBenefit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_49a69c27-f017-4a51-aee6-c1271b77f4d1" xlink:to="loc_us-gaap_DeferredFederalIncomeTaxExpenseBenefit_2ec87ab9-ba67-425b-ab91-9b3e99073e2f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredForeignIncomeTaxExpenseBenefit_9967d7ef-4b88-4894-80dd-d0e73cf70832" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredForeignIncomeTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_49a69c27-f017-4a51-aee6-c1271b77f4d1" xlink:to="loc_us-gaap_DeferredForeignIncomeTaxExpenseBenefit_9967d7ef-4b88-4894-80dd-d0e73cf70832" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_bb4bd280-570c-4bde-a85e-68834c8c3023" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_a435a676-51d9-4901-a9a2-715a163374cb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_bb4bd280-570c-4bde-a85e-68834c8c3023" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_a435a676-51d9-4901-a9a2-715a163374cb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_d3d4297c-7053-45ac-bc5f-18970fc252c2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CurrentIncomeTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_bb4bd280-570c-4bde-a85e-68834c8c3023" xlink:to="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_d3d4297c-7053-45ac-bc5f-18970fc252c2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_f0463bc4-3de1-42bd-a734-4d20a17a223d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CurrentIncomeTaxExpenseBenefit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentStateAndLocalTaxExpenseBenefit_e9a8a428-3130-4efc-bd68-e06635548b66" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CurrentStateAndLocalTaxExpenseBenefit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_f0463bc4-3de1-42bd-a734-4d20a17a223d" xlink:to="loc_us-gaap_CurrentStateAndLocalTaxExpenseBenefit_e9a8a428-3130-4efc-bd68-e06635548b66" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentFederalTaxExpenseBenefit_6b6f477c-1f07-4b44-89c7-425491141a26" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CurrentFederalTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_f0463bc4-3de1-42bd-a734-4d20a17a223d" xlink:to="loc_us-gaap_CurrentFederalTaxExpenseBenefit_6b6f477c-1f07-4b44-89c7-425491141a26" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.firstwatch.com/role/IncomeTaxesScheduleofEffectiveIncomeTaxRateReconciliationDetails" xlink:type="simple" xlink:href="fwrg-20241229.xsd#IncomeTaxesScheduleofEffectiveIncomeTaxRateReconciliationDetails"/>
  <link:calculationLink xlink:role="http://www.firstwatch.com/role/IncomeTaxesScheduleofEffectiveIncomeTaxRateReconciliationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_4a3a19dd-d29c-49cf-96f5-726639c43ece" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EffectiveIncomeTaxRateContinuingOperations"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent_4c4ad2d8-ea28-474e-ba3c-f0ae24e70050" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_4a3a19dd-d29c-49cf-96f5-726639c43ece" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent_4c4ad2d8-ea28-474e-ba3c-f0ae24e70050" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_fwrg_EffectiveIncomeTaxRateReconciliationFICATipCreditPercent_ff840bd7-8591-43a2-a4c4-27d319a3cd15" xlink:href="fwrg-20241229.xsd#fwrg_EffectiveIncomeTaxRateReconciliationFICATipCreditPercent"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_4a3a19dd-d29c-49cf-96f5-726639c43ece" xlink:to="loc_fwrg_EffectiveIncomeTaxRateReconciliationFICATipCreditPercent_ff840bd7-8591-43a2-a4c4-27d319a3cd15" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_fwrg_EffectiveIncomeTaxRateReconciliationPermanentItemsPercent_5063676e-776c-44b2-8e87-c4677f2f6555" xlink:href="fwrg-20241229.xsd#fwrg_EffectiveIncomeTaxRateReconciliationPermanentItemsPercent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_4a3a19dd-d29c-49cf-96f5-726639c43ece" xlink:to="loc_fwrg_EffectiveIncomeTaxRateReconciliationPermanentItemsPercent_5063676e-776c-44b2-8e87-c4677f2f6555" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes_2cabbe5d-e0b7-4e3f-8387-4f40ffd9580b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_4a3a19dd-d29c-49cf-96f5-726639c43ece" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes_2cabbe5d-e0b7-4e3f-8387-4f40ffd9580b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_fwrg_EffectiveIncomeTaxRateReconciliationValuationAllowanceForFederalAndStatePercent_d23e1e4e-4f28-4087-b530-6886e5bbc351" xlink:href="fwrg-20241229.xsd#fwrg_EffectiveIncomeTaxRateReconciliationValuationAllowanceForFederalAndStatePercent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_4a3a19dd-d29c-49cf-96f5-726639c43ece" xlink:to="loc_fwrg_EffectiveIncomeTaxRateReconciliationValuationAllowanceForFederalAndStatePercent_d23e1e4e-4f28-4087-b530-6886e5bbc351" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments_8ec3658c-ac35-466d-b180-29e5aecfe6af" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_4a3a19dd-d29c-49cf-96f5-726639c43ece" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments_8ec3658c-ac35-466d-b180-29e5aecfe6af" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_0a0db22b-6cf2-4210-bb90-3337f6dda873" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_4a3a19dd-d29c-49cf-96f5-726639c43ece" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_0a0db22b-6cf2-4210-bb90-3337f6dda873" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_fwrg_EffectiveIncomeTaxRateReconciliationRateChange_ee433306-0440-4b7a-938f-444f456c1b3a" xlink:href="fwrg-20241229.xsd#fwrg_EffectiveIncomeTaxRateReconciliationRateChange"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_4a3a19dd-d29c-49cf-96f5-726639c43ece" xlink:to="loc_fwrg_EffectiveIncomeTaxRateReconciliationRateChange_ee433306-0440-4b7a-938f-444f456c1b3a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_fwrg_EffectiveIncomeTaxReconciliationOfferingAndRegistrationCostsPercent_c18a2cce-d9b5-4dcb-bc93-2f024788ed1a" xlink:href="fwrg-20241229.xsd#fwrg_EffectiveIncomeTaxReconciliationOfferingAndRegistrationCostsPercent"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_4a3a19dd-d29c-49cf-96f5-726639c43ece" xlink:to="loc_fwrg_EffectiveIncomeTaxReconciliationOfferingAndRegistrationCostsPercent_c18a2cce-d9b5-4dcb-bc93-2f024788ed1a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsOther_3bc5ebad-9a75-4b58-9c8c-741f69daaabd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsOther"/>
    <link:calculationArc order="10" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_4a3a19dd-d29c-49cf-96f5-726639c43ece" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsOther_3bc5ebad-9a75-4b58-9c8c-741f69daaabd" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.firstwatch.com/role/IncomeTaxesScheduleofDeferredTaxAssetsandLiabilitiesDetails" xlink:type="simple" xlink:href="fwrg-20241229.xsd#IncomeTaxesScheduleofDeferredTaxAssetsandLiabilitiesDetails"/>
  <link:calculationLink xlink:role="http://www.firstwatch.com/role/IncomeTaxesScheduleofDeferredTaxAssetsandLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilities_6847a6d9-9123-424c-bd92-6d9f41242f89" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxLiabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsNet_5cbfb2cf-d4f6-4cf8-b125-d375a09cf25d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsNet"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxLiabilities_6847a6d9-9123-424c-bd92-6d9f41242f89" xlink:to="loc_us-gaap_DeferredTaxAssetsNet_5cbfb2cf-d4f6-4cf8-b125-d375a09cf25d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilities_37cac51a-01b9-435b-a003-5cdf1299e5b0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredIncomeTaxLiabilities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxLiabilities_6847a6d9-9123-424c-bd92-6d9f41242f89" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilities_37cac51a-01b9-435b-a003-5cdf1299e5b0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilities_1205a5e3-4c1b-46c4-a108-0b5e251780fa" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredIncomeTaxLiabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets_230d18d2-05f3-4e42-a3ef-77a7971acff8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilities_1205a5e3-4c1b-46c4-a108-0b5e251780fa" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets_230d18d2-05f3-4e42-a3ef-77a7971acff8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesLeasingArrangements_08799be7-167d-45f4-8893-1f543a70e3a2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxLiabilitiesLeasingArrangements"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilities_1205a5e3-4c1b-46c4-a108-0b5e251780fa" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesLeasingArrangements_08799be7-167d-45f4-8893-1f543a70e3a2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_74946676-d9f4-4e5f-96fa-3951c1a68f79" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilities_1205a5e3-4c1b-46c4-a108-0b5e251780fa" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_74946676-d9f4-4e5f-96fa-3951c1a68f79" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsNet_518ed128-662e-48b3-b696-c40c412b147f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_15465360-a084-4e31-9848-7544c16e127b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsOperatingLossCarryforwards"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsNet_518ed128-662e-48b3-b696-c40c412b147f" xlink:to="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_15465360-a084-4e31-9848-7544c16e127b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsInProcessResearchAndDevelopment_6dde69b5-acd5-4422-a636-45a85084a941" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsInProcessResearchAndDevelopment"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsNet_518ed128-662e-48b3-b696-c40c412b147f" xlink:to="loc_us-gaap_DeferredTaxAssetsInProcessResearchAndDevelopment_6dde69b5-acd5-4422-a636-45a85084a941" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsOther_6c657a23-b322-4b73-afdb-8543c8e61b67" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsOther"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsNet_518ed128-662e-48b3-b696-c40c412b147f" xlink:to="loc_us-gaap_DeferredTaxAssetsOther_6c657a23-b322-4b73-afdb-8543c8e61b67" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost_dd2506b9-979c-4900-b943-8caee232954d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsNet_518ed128-662e-48b3-b696-c40c412b147f" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost_dd2506b9-979c-4900-b943-8caee232954d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation_3786413a-5dc0-4fd4-b836-06042a216c04" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsNet_518ed128-662e-48b3-b696-c40c412b147f" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation_3786413a-5dc0-4fd4-b836-06042a216c04" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsDeferredIncome_bc64131f-3d4c-4a6b-8c9e-04b80f1e124d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsDeferredIncome"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsNet_518ed128-662e-48b3-b696-c40c412b147f" xlink:to="loc_us-gaap_DeferredTaxAssetsDeferredIncome_bc64131f-3d4c-4a6b-8c9e-04b80f1e124d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_fwrg_DeferredTaxAssetsOperatingLeaseLiabilities_3c8ad036-acd3-47d9-b7eb-c55835bd52c4" xlink:href="fwrg-20241229.xsd#fwrg_DeferredTaxAssetsOperatingLeaseLiabilities"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsNet_518ed128-662e-48b3-b696-c40c412b147f" xlink:to="loc_fwrg_DeferredTaxAssetsOperatingLeaseLiabilities_3c8ad036-acd3-47d9-b7eb-c55835bd52c4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_fwrg_DeferredTaxAssetsOrganizationalCosts_6cff869a-bee9-4855-9bf6-69339d511648" xlink:href="fwrg-20241229.xsd#fwrg_DeferredTaxAssetsOrganizationalCosts"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsNet_518ed128-662e-48b3-b696-c40c412b147f" xlink:to="loc_fwrg_DeferredTaxAssetsOrganizationalCosts_6cff869a-bee9-4855-9bf6-69339d511648" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_fwrg_DeferredTaxAssetsFICATipCredit_9dc0131b-fdc2-4dc1-a1e8-d0e7101eedfb" xlink:href="fwrg-20241229.xsd#fwrg_DeferredTaxAssetsFICATipCredit"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsNet_518ed128-662e-48b3-b696-c40c412b147f" xlink:to="loc_fwrg_DeferredTaxAssetsFICATipCredit_9dc0131b-fdc2-4dc1-a1e8-d0e7101eedfb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsDerivativeInstruments_0fd961d8-6f71-4035-a9bc-cbd729978ea7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsDerivativeInstruments"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsNet_518ed128-662e-48b3-b696-c40c412b147f" xlink:to="loc_us-gaap_DeferredTaxAssetsDerivativeInstruments_0fd961d8-6f71-4035-a9bc-cbd729978ea7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsValuationAllowance_6713f0c5-732c-4209-acd5-cfc002c03b63" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsValuationAllowance"/>
    <link:calculationArc order="11" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsNet_518ed128-662e-48b3-b696-c40c412b147f" xlink:to="loc_us-gaap_DeferredTaxAssetsValuationAllowance_6713f0c5-732c-4209-acd5-cfc002c03b63" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetInterestCarryforward_463b3ad5-f046-45fd-8592-5b38623c46e1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetInterestCarryforward"/>
    <link:calculationArc order="12" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsNet_518ed128-662e-48b3-b696-c40c412b147f" xlink:to="loc_us-gaap_DeferredTaxAssetInterestCarryforward_463b3ad5-f046-45fd-8592-5b38623c46e1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsStateTaxes_a42057b2-939d-484c-8cfa-99a3e14f5365" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredTaxAssetsStateTaxes"/>
    <link:calculationArc order="13" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsNet_518ed128-662e-48b3-b696-c40c412b147f" xlink:to="loc_us-gaap_DeferredTaxAssetsStateTaxes_a42057b2-939d-484c-8cfa-99a3e14f5365" xlink:type="arc"/>
  </link:calculationLink>
</link:linkbase>
