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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2020-12-09</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001707753</issuerCik>
        <issuerName>Elastic N.V.</issuerName>
        <issuerTradingSymbol>ESTC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001753445</rptOwnerCik>
            <rptOwnerName>Banon Shay</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O ELASTIC N.V.</rptOwnerStreet1>
            <rptOwnerStreet2>800 WEST EL CAMINO REAL, SUITE 350</rptOwnerStreet2>
            <rptOwnerCity>MOUNTAIN VIEW</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94040</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>CEO and Chairman</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

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                    <value>145343</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F18"/>
            </exerciseDate>
            <expirationDate>
                <value>2026-04-18</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Ordinary Shares</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>145343</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>459907</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Employee Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>5.46</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2020-12-10</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>208602</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F18"/>
            </exerciseDate>
            <expirationDate>
                <value>2026-04-18</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Ordinary Shares</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>208602</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>251305</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $136.52 to $137.51, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (2) through (17) to this Form 4.</footnote>
        <footnote id="F2">The price reported in Column 4 is weighted average price. These shares were sold in multiple transactions at prices ranging from $137.55 to $138.54, inclusive.</footnote>
        <footnote id="F3">The price reported in Column 4 is weighted average price. These shares were sold in multiple transactions at prices ranging from $138.55 to $139.54, inclusive.</footnote>
        <footnote id="F4">The price reported in Column 4 is weighted average price. These shares were sold in multiple transactions at prices ranging from $139.55 to $140.47, inclusive.</footnote>
        <footnote id="F5">The price reported in Column 4 is weighted average price. These shares were sold in multiple transactions at prices ranging from $140.62 to $141.61, inclusive.</footnote>
        <footnote id="F6">The price reported in Column 4 is weighted average price. These shares were sold in multiple transactions at prices ranging from $141.62 to $142.53, inclusive.</footnote>
        <footnote id="F7">The price reported in Column 4 is weighted average price. These shares were sold in multiple transactions at prices ranging from $142.67 to $143.63, inclusive.</footnote>
        <footnote id="F8">The price reported in Column 4 is weighted average price. These shares were sold in multiple transactions at prices ranging from $143.68 to $144.64, inclusive.</footnote>
        <footnote id="F9">The price reported in Column 4 is weighted average price. These shares were sold in multiple transactions at prices ranging from $144.71 to $145.66, inclusive.</footnote>
        <footnote id="F10">The price reported in Column 4 is weighted average price. These shares were sold in multiple transactions at prices ranging from $145.73 to $146.41, inclusive.</footnote>
        <footnote id="F11">The price reported in Column 4 is weighted average price. These shares were sold in multiple transactions at prices ranging from $135.73 to $136.66, inclusive.</footnote>
        <footnote id="F12">The price reported in Column 4 is weighted average price. These shares were sold in multiple transactions at prices ranging from $136.80 to $137.67, inclusive.</footnote>
        <footnote id="F13">The price reported in Column 4 is weighted average price. These shares were sold in multiple transactions at prices ranging from $137.82 to $138.80, inclusive.</footnote>
        <footnote id="F14">The price reported in Column 4 is weighted average price. These shares were sold in multiple transactions at prices ranging from $138.97 to $139.96, inclusive.</footnote>
        <footnote id="F15">The price reported in Column 4 is weighted average price. These shares were sold in multiple transactions at prices ranging from $139.97 to $140.96, inclusive.</footnote>
        <footnote id="F16">The price reported in Column 4 is weighted average price. These shares were sold in multiple transactions at prices ranging from $140.98 to $141.97, inclusive.</footnote>
        <footnote id="F17">The price reported in Column 4 is weighted average price. These shares were sold in multiple transactions at prices ranging from $141.98 to $142.34, inclusive.</footnote>
        <footnote id="F18">The ordinary shares subject to the option are fully vested and immediately exercisable.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ W.H. Baird Garrett, by power of attorney</signatureName>
        <signatureDate>2020-12-11</signatureDate>
    </ownerSignature>
</ownershipDocument>
