Check whether a Netherlands IBAN is valid — country, length and mod-97 checksum — and break out the bank details. Instant and free, right in your browser.
| Country | Netherlands (NL) |
| IBAN length | 18 characters |
| Structure | NL + 2 check digits + 14-character BBAN |
| Valid example | NL33 7654 3210 9876 54 |
Every Netherlands IBAN starts with NL and is 18 characters long. The two digits after the country code are a checksum (ISO 7064 mod-97) computed from the rest of the number, so a single mistyped character makes the whole IBAN invalid — which is exactly what this validator catches before a payment is sent.
A Netherlands IBAN is exactly 18 characters long, beginning with the country code NL followed by two check digits and the national bank account number (BBAN).
A correctly-formed example is NL33 7654 3210 9876 54. The two digits after NL are a mod-97 checksum that must match the rest of the number.
By confirming it is 18 characters, starts with NL, and passes the ISO 7064 mod-97 checksum. The tool above does all three instantly, in your browser — no data is sent anywhere.