<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2020-09-18</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001640147</issuerCik>
        <issuerName>Snowflake Inc.</issuerName>
        <issuerTradingSymbol>SNOW</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001816067</rptOwnerCik>
            <rptOwnerName>ICONIQ Strategic Partners V, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O ICONIQ CAPITAL</rptOwnerStreet1>
            <rptOwnerStreet2>394 PACIFIC AVENUE, 2ND FLOOR</rptOwnerStreet2>
            <rptOwnerCity>SAN FRANCISCO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94111</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001816068</rptOwnerCik>
            <rptOwnerName>ICONIQ Strategic Partners V-B, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O ICONIQ CAPITAL</rptOwnerStreet1>
            <rptOwnerStreet2>394 PACIFIC AVENUE, 2ND FLOOR</rptOwnerStreet2>
            <rptOwnerCity>SAN FRANCISCO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94111</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001825883</rptOwnerCik>
            <rptOwnerName>ICONIQ Strategic Partners V GP, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O ICONIQ CAPITAL</rptOwnerStreet1>
            <rptOwnerStreet2>394 PACIFIC AVENUE, 2ND FLOOR</rptOwnerStreet2>
            <rptOwnerCity>SAN FRANCISCO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94111</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001825921</rptOwnerCik>
            <rptOwnerName>ICONIQ Strategic Partners V TT GP, Ltd.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O ICONIQ CAPITAL</rptOwnerStreet1>
            <rptOwnerStreet2>394 PACIFIC AVENUE, 2ND FLOOR</rptOwnerStreet2>
            <rptOwnerCity>SAN FRANCISCO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94111</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>82661</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                    <footnoteId id="F4"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>127339</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                    <footnoteId id="F5"/>
                    <footnoteId id="F3"/>
                    <footnoteId id="F4"/>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By ICONIQ Strategic Partners V-B, L.P.</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">These shares were purchased from the underwriters at the closing of the Issuer's initial public offering.</footnote>
        <footnote id="F2">The shares are held by ICONIQ Strategic Partners V, L.P. (&quot;ICONIQ V&quot;).</footnote>
        <footnote id="F3">ICONIQ Strategic Partners GP V, L.P. (&quot;ICONIQ GP V&quot;) is the sole general partner of each of ICONIQ V and ICONIQ V-B. ICONIQ Strategic Partners V TT GP, Ltd. (&quot;ICONIQ Parent GP V&quot;) is the sole general partner of ICONIQ GP V. Divesh Makan (&quot;Makan&quot;), William J.G. Griffith (&quot;Griffith&quot;) and Matthew Jacobson (&quot;Jacobson&quot;) are the sole equity holders and directors of ICONIQ Parent GP V.</footnote>
        <footnote id="F4">Each of ICONIQ GP V, ICONIQ Parent GP V, Makan, Griffith and Jacobson disclaims beneficial ownership of the securities reported herein for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the &quot;Exchange Act&quot;), except to the extent of its or his pecuniary interest therein, if any. This report shall not be deemed an admission that any of the Reporting Persons is a beneficial owner of such securities for the purpose of Section 16 of the Exchange Act, or for any other purpose.</footnote>
        <footnote id="F5">The shares are held by ICONIQ Strategic Partners V-B, L.P. (&quot;ICONIQ V-B&quot;).</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>ICONIQ Strategic Partners V, L.P., ICONIQ Strategic Partners V GP, L.P., By: ICONIQ Strategic Partners V TT GP, Ltd., By: Kevin Foster, Title: Senior Vice President, /s/ Kevin Foster</signatureName>
        <signatureDate>2020-09-23</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>ICONIQ Strategic Partners V-B, L.P., ICONIQ Strategic Partners V GP, L.P., By: ICONIQ Strategic Partners V TT GP, Ltd., By: Kevin Foster, Title: Senior Vice President, /s/ Kevin Foster</signatureName>
        <signatureDate>2020-09-23</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>ICONIQ Strategic Partners V GP, L.P., By: ICONIQ Strategic Partners V TT GP, By: Kevin Foster, Title: Senior Vice President, /s/ Kevin Foster</signatureName>
        <signatureDate>2020-09-23</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>ICONIQ Strategic Partners V TT GP, Ltd., By: Kevin Foster, Title: Senior Vice President, /s/ Kevin Foster</signatureName>
        <signatureDate>2020-09-23</signatureDate>
    </ownerSignature>
</ownershipDocument>
