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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:01a01b2b-fb25-7293-9ae7-d87ee0b4021e,g:cdb0a9eb-8449-41a9-9151-4859122c9227-->
<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:arcroleRef arcroleURI="https://xbrl.org/2023/arcrole/summation-item" xlink:type="simple" xlink:href="https://www.xbrl.org/2023/calculation-1.1.xsd#summation-item"/>
  <link:roleRef roleURI="http://honestco.com/role/CondensedConsolidatedBalanceSheets" xlink:type="simple" xlink:href="hnst-20260930.xsd#CondensedConsolidatedBalanceSheets"/>
  <link:calculationLink xlink:role="http://honestco.com/role/CondensedConsolidatedBalanceSheets" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_01a01b2b-fbfb-73af-8514-efe72b9c8376" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockValue_01a01b2b-fbfb-7121-8bd5-c71fad3d824f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_01a01b2b-fbfb-73af-8514-efe72b9c8376" xlink:to="loc_us-gaap_PreferredStockValue_01a01b2b-fbfb-7121-8bd5-c71fad3d824f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_01a01b2b-fbfb-7811-9816-8c3b246706d9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockValue"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_01a01b2b-fbfb-73af-8514-efe72b9c8376" xlink:to="loc_us-gaap_CommonStockValue_01a01b2b-fbfb-7811-9816-8c3b246706d9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonValue_01a01b2b-fbfb-77a2-b1e2-b4a8cf618d36" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockCommonValue"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_01a01b2b-fbfb-73af-8514-efe72b9c8376" xlink:to="loc_us-gaap_TreasuryStockCommonValue_01a01b2b-fbfb-77a2-b1e2-b4a8cf618d36" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapital_01a01b2b-fbfb-751b-bc23-402e449e782a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdditionalPaidInCapital"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_01a01b2b-fbfb-73af-8514-efe72b9c8376" xlink:to="loc_us-gaap_AdditionalPaidInCapital_01a01b2b-fbfb-751b-bc23-402e449e782a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_01a01b2b-fbfb-7bf6-9821-a3a8f7432d8a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_01a01b2b-fbfb-73af-8514-efe72b9c8376" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_01a01b2b-fbfb-7bf6-9821-a3a8f7432d8a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_01a01b2b-fbfb-7a9f-ab00-9d599cc28401" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Liabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_01a01b2b-fbfb-741d-bdba-77595d9df24a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_01a01b2b-fbfb-7a9f-ab00-9d599cc28401" xlink:to="loc_us-gaap_LiabilitiesCurrent_01a01b2b-fbfb-741d-bdba-77595d9df24a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_01a01b2b-fbfb-7301-a50b-ed07243edf9d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_01a01b2b-fbfb-7a9f-ab00-9d599cc28401" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_01a01b2b-fbfb-7301-a50b-ed07243edf9d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_01a01b2b-fbfb-708f-8352-370b8dd55a3c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Assets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_01a01b2b-fbfb-7fb4-ba19-1fa9609b8c52" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_01a01b2b-fbfb-708f-8352-370b8dd55a3c" xlink:to="loc_us-gaap_AssetsCurrent_01a01b2b-fbfb-7fb4-ba19-1fa9609b8c52" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxAssetsNet_01a01b2b-fbfb-77d7-a761-63720d923cde" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredIncomeTaxAssetsNet"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_01a01b2b-fbfb-708f-8352-370b8dd55a3c" xlink:to="loc_us-gaap_DeferredIncomeTaxAssetsNet_01a01b2b-fbfb-77d7-a761-63720d923cde" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_01a01b2b-fbfb-7685-b137-804d9ed59dd4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_01a01b2b-fbfb-708f-8352-370b8dd55a3c" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_01a01b2b-fbfb-7685-b137-804d9ed59dd4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_01a01b2b-fbfb-7b0a-a05e-2b95873920b9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_01a01b2b-fbfb-708f-8352-370b8dd55a3c" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_01a01b2b-fbfb-7b0a-a05e-2b95873920b9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_01a01b2b-fbfb-713a-b5c4-023b1b511ff4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Goodwill"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_01a01b2b-fbfb-708f-8352-370b8dd55a3c" xlink:to="loc_us-gaap_Goodwill_01a01b2b-fbfb-713a-b5c4-023b1b511ff4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_01a01b2b-fbfb-77b8-90a1-34869b80e58d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_01a01b2b-fbfb-708f-8352-370b8dd55a3c" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_01a01b2b-fbfb-77b8-90a1-34869b80e58d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_01a0cd77-d275-7c13-851d-bec6d968f7ca" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_01a01b2b-fbfb-708f-8352-370b8dd55a3c" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_01a0cd77-d275-7c13-851d-bec6d968f7ca" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_01a01b2b-fbfb-7691-985e-dd2400f8eb9e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_01a01b2b-fbfb-7b14-a60c-9adce1491c43" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_01a01b2b-fbfb-7691-985e-dd2400f8eb9e" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_01a01b2b-fbfb-7b14-a60c-9adce1491c43" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableNetCurrent_01a01b2b-fbfb-7c8e-8d3b-1b43b9eb30d0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsNotesAndLoansReceivableNetCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_01a01b2b-fbfb-7691-985e-dd2400f8eb9e" xlink:to="loc_us-gaap_AccountsNotesAndLoansReceivableNetCurrent_01a01b2b-fbfb-7c8e-8d3b-1b43b9eb30d0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_01a01b2b-fbfb-7a98-83b8-aed3f5893762" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_01a01b2b-fbfb-7691-985e-dd2400f8eb9e" xlink:to="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_01a01b2b-fbfb-7a98-83b8-aed3f5893762" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_01a01b2b-fbfb-78fa-b8c6-c753792448f5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryNet"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_01a01b2b-fbfb-7691-985e-dd2400f8eb9e" xlink:to="loc_us-gaap_InventoryNet_01a01b2b-fbfb-78fa-b8c6-c753792448f5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_01a01b2b-fbfb-799c-9e03-34ba99368e55" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_01a01b2b-fbfb-7570-9098-5505cc30cc12" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_01a01b2b-fbfb-799c-9e03-34ba99368e55" xlink:to="loc_us-gaap_StockholdersEquity_01a01b2b-fbfb-7570-9098-5505cc30cc12" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_01a01b2b-fbfb-758f-922c-39a8282776ef" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommitmentsAndContingencies"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_01a01b2b-fbfb-799c-9e03-34ba99368e55" xlink:to="loc_us-gaap_CommitmentsAndContingencies_01a01b2b-fbfb-758f-922c-39a8282776ef" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_01a01b2b-fbfb-7111-acd2-c319c38aab38" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Liabilities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_01a01b2b-fbfb-799c-9e03-34ba99368e55" xlink:to="loc_us-gaap_Liabilities_01a01b2b-fbfb-7111-acd2-c319c38aab38" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_01a01b2b-fbfb-741a-bcd6-41fe557b9cd7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrent_01a01b2b-fbfb-7351-b643-40158c676798" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsPayableCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_01a01b2b-fbfb-741a-bcd6-41fe557b9cd7" xlink:to="loc_us-gaap_AccountsPayableCurrent_01a01b2b-fbfb-7351-b643-40158c676798" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_01a01b2b-fbfb-7c64-9906-0ae50dbc55e6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccruedLiabilitiesCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_01a01b2b-fbfb-741a-bcd6-41fe557b9cd7" xlink:to="loc_us-gaap_AccruedLiabilitiesCurrent_01a01b2b-fbfb-7c64-9906-0ae50dbc55e6" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://honestco.com/role/CondensedConsolidatedStatementsofComprehensiveIncome" xlink:type="simple" xlink:href="hnst-20260930.xsd#CondensedConsolidatedStatementsofComprehensiveIncome"/>
  <link:calculationLink xlink:role="http://honestco.com/role/CondensedConsolidatedStatementsofComprehensiveIncome" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_01a01b2b-fbfb-711b-929d-55cd6c77fb4e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a01b2b-fbfb-72a3-b673-743ac8e84538" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_01a01b2b-fbfb-711b-929d-55cd6c77fb4e" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a01b2b-fbfb-72a3-b673-743ac8e84538" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_01a01b2b-fbfb-7875-95d4-8c76436e1380" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_01a01b2b-fbfb-711b-929d-55cd6c77fb4e" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_01a01b2b-fbfb-7875-95d4-8c76436e1380" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_01a01b2b-fbfb-7717-9eb2-aa4bff2828a6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GrossProfit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_01a01b2b-fbfb-71a2-af0d-5d1248db64f3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_GrossProfit_01a01b2b-fbfb-7717-9eb2-aa4bff2828a6" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_01a01b2b-fbfb-71a2-af0d-5d1248db64f3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfRevenue_01a01b2b-fbfb-726c-aeb2-57451e6b9b1f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CostOfRevenue"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_GrossProfit_01a01b2b-fbfb-7717-9eb2-aa4bff2828a6" xlink:to="loc_us-gaap_CostOfRevenue_01a01b2b-fbfb-726c-aeb2-57451e6b9b1f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenses_01a01b2b-fbfb-7017-9e40-537c4f7eb848" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingExpenses"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MarketingExpense_01a01b2b-fbfb-7aaf-a47b-3bf88279afa1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MarketingExpense"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_01a01b2b-fbfb-7017-9e40-537c4f7eb848" xlink:to="loc_us-gaap_MarketingExpense_01a01b2b-fbfb-7aaf-a47b-3bf88279afa1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_01a01b2b-fbfb-7d29-b2b8-82c79208d696" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SellingGeneralAndAdministrativeExpense"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_01a01b2b-fbfb-7017-9e40-537c4f7eb848" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_01a01b2b-fbfb-7d29-b2b8-82c79208d696" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpense_01a01b2b-fbfb-7ae0-bf08-8232de9b5e02" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ResearchAndDevelopmentExpense"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_01a01b2b-fbfb-7017-9e40-537c4f7eb848" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpense_01a01b2b-fbfb-7ae0-bf08-8232de9b5e02" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_01a01b2b-fbfb-7c54-93cd-96db76097652" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCharges"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_01a01b2b-fbfb-7017-9e40-537c4f7eb848" xlink:to="loc_us-gaap_RestructuringCharges_01a01b2b-fbfb-7c54-93cd-96db76097652" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_01a01b2b-fbfb-7785-96c3-aa87fd6a57a8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_01a01b2b-fbfb-7aff-a847-e25b089dc306" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GrossProfit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_01a01b2b-fbfb-7785-96c3-aa87fd6a57a8" xlink:to="loc_us-gaap_GrossProfit_01a01b2b-fbfb-7aff-a847-e25b089dc306" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenses_01a01b2b-fbfb-7eb0-baf4-b9d66491a42c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingExpenses"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_01a01b2b-fbfb-7785-96c3-aa87fd6a57a8" xlink:to="loc_us-gaap_OperatingExpenses_01a01b2b-fbfb-7eb0-baf4-b9d66491a42c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a01b2b-fbfb-7c61-a12b-55f9dbd665a7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_01a01b2b-fbfb-7115-8aff-d0d2ecef9ec4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a01b2b-fbfb-7c61-a12b-55f9dbd665a7" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_01a01b2b-fbfb-7115-8aff-d0d2ecef9ec4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_01a01b2b-fbfb-7426-8ccc-14987f30bc61" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a01b2b-fbfb-7c61-a12b-55f9dbd665a7" xlink:to="loc_us-gaap_OperatingIncomeLoss_01a01b2b-fbfb-7426-8ccc-14987f30bc61" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://honestco.com/role/CondensedConsolidatedStatementsofCashFlows" xlink:type="simple" xlink:href="hnst-20260930.xsd#CondensedConsolidatedStatementsofCashFlows"/>
  <link:calculationLink xlink:role="http://honestco.com/role/CondensedConsolidatedStatementsofCashFlows" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_01a01b2b-fbfc-736d-ae8f-42eb12361c88" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_01a01b2b-fbfc-7c4b-802a-9c7abf26787e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_01a01b2b-fbfc-736d-ae8f-42eb12361c88" xlink:to="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_01a01b2b-fbfc-7c4b-802a-9c7abf26787e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromStockOptionsExercised_01a01b2b-fbfc-7d49-a295-50f48be5ffea" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromStockOptionsExercised"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_01a01b2b-fbfc-736d-ae8f-42eb12361c88" xlink:to="loc_us-gaap_ProceedsFromStockOptionsExercised_01a01b2b-fbfc-7d49-a295-50f48be5ffea" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromStockPlans_01a01b2b-fbfc-7ace-a2ba-e0bdbc772a8d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromStockPlans"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_01a01b2b-fbfc-736d-ae8f-42eb12361c88" xlink:to="loc_us-gaap_ProceedsFromStockPlans_01a01b2b-fbfc-7ace-a2ba-e0bdbc772a8d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeasePrincipalPayments_01a01b2b-fbfc-7355-a6e2-f3858ba8b88b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinanceLeasePrincipalPayments"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_01a01b2b-fbfc-736d-ae8f-42eb12361c88" xlink:to="loc_us-gaap_FinanceLeasePrincipalPayments_01a01b2b-fbfc-7355-a6e2-f3858ba8b88b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_01a01b2b-fbfc-7b0e-88be-4837748e915a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_01a01b2b-fbfc-71a1-a092-81d3788382ce" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_01a01b2b-fbfc-7b0e-88be-4837748e915a" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_01a01b2b-fbfc-71a1-a092-81d3788382ce" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a01b2b-fbfc-7816-b805-5cda73d42a4e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInInventories_01a01b2b-fbfc-79dd-a0d3-4cdddabd9024" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInInventories"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a01b2b-fbfc-7816-b805-5cda73d42a4e" xlink:to="loc_us-gaap_IncreaseDecreaseInInventories_01a01b2b-fbfc-79dd-a0d3-4cdddabd9024" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInDeferredIncomeTaxes_01a13e52-01d3-7743-94f1-617be2403843" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInDeferredIncomeTaxes"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a01b2b-fbfc-7816-b805-5cda73d42a4e" xlink:to="loc_us-gaap_IncreaseDecreaseInDeferredIncomeTaxes_01a13e52-01d3-7743-94f1-617be2403843" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_01a01b2b-fbfc-7284-9fe6-3f46611a4b4b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a01b2b-fbfc-7816-b805-5cda73d42a4e" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_01a01b2b-fbfc-7284-9fe6-3f46611a4b4b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hnst_IncreaseDecreaseInAccountsPayableAccruedLiabilitiesAndOtherLongTermLiabilities_01a01b2b-fbfc-7a16-ab7d-f8ddae42d258" xlink:href="hnst-20260930.xsd#hnst_IncreaseDecreaseInAccountsPayableAccruedLiabilitiesAndOtherLongTermLiabilities"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a01b2b-fbfc-7816-b805-5cda73d42a4e" xlink:to="loc_hnst_IncreaseDecreaseInAccountsPayableAccruedLiabilitiesAndOtherLongTermLiabilities_01a01b2b-fbfc-7a16-ab7d-f8ddae42d258" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_01a01b2b-fbfc-7cc9-bc89-3f0bb97e9c68" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a01b2b-fbfc-7816-b805-5cda73d42a4e" xlink:to="loc_us-gaap_NetIncomeLoss_01a01b2b-fbfc-7cc9-bc89-3f0bb97e9c68" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_01a01b2b-fbfc-768b-af54-42913f98fba1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensation"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a01b2b-fbfc-7816-b805-5cda73d42a4e" xlink:to="loc_us-gaap_ShareBasedCompensation_01a01b2b-fbfc-768b-af54-42913f98fba1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_01a01b2b-fbfc-7b66-93d0-31e567bf2a30" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a01b2b-fbfc-7816-b805-5cda73d42a4e" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_01a01b2b-fbfc-7b66-93d0-31e567bf2a30" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInContractWithCustomerLiability_01a01b2b-fbfc-75d6-beeb-f844b09f8ef9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInContractWithCustomerLiability"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a01b2b-fbfc-7816-b805-5cda73d42a4e" xlink:to="loc_us-gaap_IncreaseDecreaseInContractWithCustomerLiability_01a01b2b-fbfc-75d6-beeb-f844b09f8ef9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_01a01b2b-fbfc-7209-add2-df3e98fb6ea1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets"/>
    <link:calculationArc order="9" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a01b2b-fbfc-7816-b805-5cda73d42a4e" xlink:to="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_01a01b2b-fbfc-7209-add2-df3e98fb6ea1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingLeaseLiability_01a01b2b-fbfc-7c6a-9973-fb10ef34dbc2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInOperatingLeaseLiability"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a01b2b-fbfc-7816-b805-5cda73d42a4e" xlink:to="loc_us-gaap_IncreaseDecreaseInOperatingLeaseLiability_01a01b2b-fbfc-7c6a-9973-fb10ef34dbc2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherOperatingActivitiesCashFlowStatement_01a01b2b-fbfc-72fd-a8c5-516ca4e1018c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherOperatingActivitiesCashFlowStatement"/>
    <link:calculationArc order="11" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a01b2b-fbfc-7816-b805-5cda73d42a4e" xlink:to="loc_us-gaap_OtherOperatingActivitiesCashFlowStatement_01a01b2b-fbfc-72fd-a8c5-516ca4e1018c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAssetAmortizationExpense_01a01b2b-fbfc-7cae-9483-a2d1bda12020" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseRightOfUseAssetAmortizationExpense"/>
    <link:calculationArc order="12" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a01b2b-fbfc-7816-b805-5cda73d42a4e" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAssetAmortizationExpense_01a01b2b-fbfc-7cae-9483-a2d1bda12020" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_01a01b2b-fbfc-7518-90f3-62d200fad8c5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a01b2b-fbfc-772a-92b6-982c51ab2135" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_01a01b2b-fbfc-7518-90f3-62d200fad8c5" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a01b2b-fbfc-772a-92b6-982c51ab2135" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_01a01b2b-fbfc-70fc-887b-1a96a40f4b47" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_01a01b2b-fbfc-7518-90f3-62d200fad8c5" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_01a01b2b-fbfc-70fc-887b-1a96a40f4b47" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_01a01b2b-fbfc-7f64-bc6f-be988971afbc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_01a01b2b-fbfc-7518-90f3-62d200fad8c5" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_01a01b2b-fbfc-7f64-bc6f-be988971afbc" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://honestco.com/role/AccruedExpensesDetails" xlink:type="simple" xlink:href="hnst-20260930.xsd#AccruedExpensesDetails"/>
  <link:calculationLink xlink:role="http://honestco.com/role/AccruedExpensesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_01a01b2b-fbfc-7dfb-b5f8-64572bd535b2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccruedLiabilitiesCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedSalariesCurrent_01a01b2b-fbfc-77c7-b95e-373250636896" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccruedSalariesCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_01a01b2b-fbfc-7dfb-b5f8-64572bd535b2" xlink:to="loc_us-gaap_AccruedSalariesCurrent_01a01b2b-fbfc-77c7-b95e-373250636896" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hnst_AccruedInventoryPurchases_01a01b2b-fbfc-7a0c-8a8c-e53917c88134" xlink:href="hnst-20260930.xsd#hnst_AccruedInventoryPurchases"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_01a01b2b-fbfc-7dfb-b5f8-64572bd535b2" xlink:to="loc_hnst_AccruedInventoryPurchases_01a01b2b-fbfc-7a0c-8a8c-e53917c88134" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedMarketingCostsCurrent_01a01b2b-fbfc-7d61-b04f-0059c4128d21" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccruedMarketingCostsCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_01a01b2b-fbfc-7dfb-b5f8-64572bd535b2" xlink:to="loc_us-gaap_AccruedMarketingCostsCurrent_01a01b2b-fbfc-7d61-b04f-0059c4128d21" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_01a01b2b-fbfc-71a5-80d5-7b5ad046b8d0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_01a01b2b-fbfc-7dfb-b5f8-64572bd535b2" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_01a01b2b-fbfc-71a5-80d5-7b5ad046b8d0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserveCurrent_01a01b2b-fcc6-7791-95ae-5e62ed448732" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringReserveCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_01a01b2b-fbfc-7dfb-b5f8-64572bd535b2" xlink:to="loc_us-gaap_RestructuringReserveCurrent_01a01b2b-fcc6-7791-95ae-5e62ed448732" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAccruedLiabilitiesCurrent_01a01b2b-fcc6-77f2-8aad-c6ba96ff68e6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAccruedLiabilitiesCurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_01a01b2b-fbfc-7dfb-b5f8-64572bd535b2" xlink:to="loc_us-gaap_OtherAccruedLiabilitiesCurrent_01a01b2b-fcc6-77f2-8aad-c6ba96ff68e6" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://honestco.com/role/NetIncomeLossperShareAttributabletoCommonStockholdersScheduleofComputationofBasicandDilutedNetIncomeLossPerShareDetails" xlink:type="simple" xlink:href="hnst-20260930.xsd#NetIncomeLossperShareAttributabletoCommonStockholdersScheduleofComputationofBasicandDilutedNetIncomeLossPerShareDetails"/>
  <link:calculationLink xlink:role="http://honestco.com/role/NetIncomeLossperShareAttributabletoCommonStockholdersScheduleofComputationofBasicandDilutedNetIncomeLossPerShareDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_01a01b2b-fcc6-7ba7-9b5e-fff258987965" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_01a01b2b-fcc6-7470-8234-cf1f3b181477" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_01a01b2b-fcc6-7ba7-9b5e-fff258987965" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_01a01b2b-fcc6-7470-8234-cf1f3b181477" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToConversionOfPreferredStock_01a01b2b-fcc6-7fa5-b124-7764183772b4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncrementalCommonSharesAttributableToConversionOfPreferredStock"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_01a01b2b-fcc6-7ba7-9b5e-fff258987965" xlink:to="loc_us-gaap_IncrementalCommonSharesAttributableToConversionOfPreferredStock_01a01b2b-fcc6-7fa5-b124-7764183772b4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_01a01b2b-fcc6-76a5-a705-baa918131257" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_01a01b2b-fcc6-7ba7-9b5e-fff258987965" xlink:to="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_01a01b2b-fcc6-76a5-a705-baa918131257" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://honestco.com/role/LeasesScheduleofComponentsofLeaseExpenseDetails" xlink:type="simple" xlink:href="hnst-20260930.xsd#LeasesScheduleofComponentsofLeaseExpenseDetails"/>
  <link:calculationLink xlink:role="http://honestco.com/role/LeasesScheduleofComponentsofLeaseExpenseDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseCost_01a01b2b-fcc6-7d9f-9ba9-f311b3f73772" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LeaseCost"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubleaseIncome_01a01b2b-fcc6-74cf-972a-95e0abc34201" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubleaseIncome"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_01a01b2b-fcc6-7d9f-9ba9-f311b3f73772" xlink:to="loc_us-gaap_SubleaseIncome_01a01b2b-fcc6-74cf-972a-95e0abc34201" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseCost_01a01b2b-fcc6-746b-9d0b-a97565714126" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseCost"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_01a01b2b-fcc6-7d9f-9ba9-f311b3f73772" xlink:to="loc_us-gaap_OperatingLeaseCost_01a01b2b-fcc6-746b-9d0b-a97565714126" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://honestco.com/role/LeasesScheduleofAssetsandLiabilitiesDetails" xlink:type="simple" xlink:href="hnst-20260930.xsd#LeasesScheduleofAssetsandLiabilitiesDetails"/>
  <link:calculationLink xlink:role="http://honestco.com/role/LeasesScheduleofAssetsandLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_hnst_LeaseLiability_01a01b2b-fcc6-7a4a-920d-117596f6d41c" xlink:href="hnst-20260930.xsd#hnst_LeaseLiability"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_01a01b2b-fcc6-7083-9a46-084cfce46cc5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_hnst_LeaseLiability_01a01b2b-fcc6-7a4a-920d-117596f6d41c" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_01a01b2b-fcc6-7083-9a46-084cfce46cc5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_01a01b2b-fcc6-73eb-84c1-a4a5b7ea4a2c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_hnst_LeaseLiability_01a01b2b-fcc6-7a4a-920d-117596f6d41c" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_01a01b2b-fcc6-73eb-84c1-a4a5b7ea4a2c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_hnst_LeaseRightOfUseAsset_01a01b2b-fcc6-70ad-ae34-2ef78ae06c3b" xlink:href="hnst-20260930.xsd#hnst_LeaseRightOfUseAsset"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_01a01b2b-fcc6-732c-b594-79a30daef229" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_hnst_LeaseRightOfUseAsset_01a01b2b-fcc6-70ad-ae34-2ef78ae06c3b" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_01a01b2b-fcc6-732c-b594-79a30daef229" xlink:type="arc"/>
  </link:calculationLink>
</link:linkbase>
