Netherlands IBAN calculator and checker

A Dutch IBAN has 18 characters: NL, two check digits, then the bank code and account number (rekeningnummer). Enter the local details to build one, or paste an IBAN to check it, all in your browser.

Calculate or check a Dutch IBAN

Enter the bank code and account number (rekeningnummer). The calculator pads short numbers with zeros, works out any national check digits you leave empty and adds the two IBAN check digits.

Switch to Check to paste an IBAN instead: it tests the length, characters, check digits and national check, and shows the bank, branch and account parts. Nothing you type leaves the page.

NL IBAN format

A Dutch IBAN is 18 characters: NL, two check digits, then the bank code and account number (rekeningnummer).

In the printed format, k marks the check digits, a and b the bank, s the branch, sort code or prefix, c the account number and x a national check character.

IBAN length
18 characters
Check digits
2 digits after NL
Bank code
4 letters
Account number (rekeningnummer)
10 digits
National check digit
None
SEPA
Yes, EU member
Printed format
NLkk bbbb cccc cccc cc
Example IBAN
NL91 ABNA 0417 1643 00

Frequently asked questions

  • 18 characters: NL, two check digits, then the bank code and account number (rekeningnummer). Printed in groups of four, it looks like NL91 ABNA 0417 1643 00.

  • No. Older Dutch account numbers were built to pass the eleven test (elfproef), but Dutch banks no longer guarantee it for new numbers, so the checker tests only the IBAN’s own check digits for NL IBANs. The four letters after the check digits identify the bank, such as ABNA in the registry’s example.

  • Yes. The Netherlands is an EU member state, so it is in SEPA: euro payments to a Dutch IBAN can go by SEPA credit transfer.

  • With the ISO 7064 mod 97-10 algorithm. The bank code and account number (rekeningnummer) and the country code NL are turned into digits, and the two check digits are chosen so the whole number leaves a remainder of 1 when divided by 97. The calculator does this for you and rejects any input that cannot make a valid NL IBAN.

  • Yes. The calculator and the checker run entirely in your browser: the details you enter are never sent to a server, stored or shared. There is no sign-up and no fee.

  • Yes. The calculator covers 41 countries and the checker all 89 in the SWIFT IBAN registry. Pick a different country in the form above, or open its page from the list below.

Paying an IBAN from stablecoins? Holyheld Business converts USDC to EUR and pays it out by SEPA. See pricing or the guide to off-ramping USDC to an IBAN.

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