IBAN Validator

Validate any IBAN for length, format, and mod-97 checksum.

IBAN

Spaces and lowercase are fine — we normalize before checking. All processing happens in your browser.

What this checks

Country code is one of 67 supported
Total length matches the country’s IBAN spec
Mod-97 checksum passes (the official IBAN rule)

It does not verify that the account actually exists at a bank.

Over deze tool

Paste an International Bank Account Number and see if it passes the official mod-97 check, plus the country, bank code, and account number breakdown. Common r/europe, r/expats, and r/personalfinance pain point when wiring money abroad.

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