<SUBMISSION>
<ACCESSION-NUMBER>0001209191-17-060463
<TYPE>4
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20171108
<FILING-DATE>20171113
<DATE-OF-FILING-DATE-CHANGE>20171113
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>Miller J Sanford
<CIK>0001359524
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>001-36269
<FILM-NUMBER>171197848
</FILING-VALUES>
<MAIL-ADDRESS>
<STREET1>3000 SAND HILL ROAD
<STREET2>BUILDING 2, SUITE 250
<CITY>MENLO PARK
<STATE>CA
<ZIP>94025
</MAIL-ADDRESS>
<FORMER-NAME>
<FORMER-CONFORMED-NAME>Miller J Sanford (Sandy)
<DATE-CHANGED>20060414
</FORMER-NAME>
</REPORTING-OWNER>
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>Care.com Inc
<CIK>0001412270
<ASSIGNED-SIC>7200
<IRS-NUMBER>205785879
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<BUSINESS-ADDRESS>
<STREET1>77 FOURTH AVENUE
<STREET2>5TH FLOOR
<CITY>Waltham
<STATE>MA
<ZIP>02451
<PHONE>781 642 5900
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>77 FOURTH AVENUE
<STREET2>5TH FLOOR
<CITY>Waltham
<STATE>MA
<ZIP>02451
</MAIL-ADDRESS>
</ISSUER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2017-11-08</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001412270</issuerCik>
        <issuerName>Care.com Inc</issuerName>
        <issuerTradingSymbol>CRCM</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001359524</rptOwnerCik>
            <rptOwnerName>Miller J Sanford</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>3000 SAND HILL ROAD</rptOwnerStreet1>
            <rptOwnerStreet2>BUILDING 2, SUITE 250</rptOwnerStreet2>
            <rptOwnerCity>MENLO PARK</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1692080</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Institutional Venture Partners XIII, L.P.</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2017-11-08</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>2264</value>
                    <footnoteId id="F3"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>18.78</value>
                    <footnoteId id="F4"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Miller Venture Partners LP</value>
                    <footnoteId id="F5"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Represents the number of shares held by IVP XIII (as defined below) after giving effect to the Distribution (as defined below).</footnote>
        <footnote id="F2">The shares are held of record by Institutional Venture Partners XIII, L.P. (&quot;IVP XIII&quot;). Institutional Venture Management XIII LLC (&quot;IVM XIII&quot;) is the general partner of IVP XIII. The reporting person, as a managing director of IVM XIII, may be deemed to have shared voting and dispositive power with respect to the shares held by IVP XIII. The reporting person disclaims beneficial ownership of the securities reported herein, except to the extent of his pecuniary interest therein.</footnote>
        <footnote id="F3">Consists of shares previously reported as indirectly held through IVP XIII, which shares were distributed in kind on a pro rata basis to Miller Venture Partners LP (&quot;MVP&quot;) for no consideration in a transaction not required to be reported (the &quot;Distribution&quot;).</footnote>
        <footnote id="F4">Price reflected is the weighted-average sale price for shares sold.  The range of sale prices for the transactions reported was $18.67 to $18.90 per share.  The Reporting Person undertakes to provide, upon request by the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.</footnote>
        <footnote id="F5">The shares are held by MVP. The Reporting Person is the general partner of MVP. The Reporting Person disclaims beneficial ownership of the shares held by MVP except to the extent of his proportionate pecuniary interest therein.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ J. Sanford Miller</signatureName>
        <signatureDate>2017-11-13</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
