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IBAN Validator

Enter any International Bank Account Number (IBAN) and verify its structure and checksum according to ISO 13616 standards.

Validation checks country code, IBAN length, and the ISO 13616 mod-97 checksum. It does not verify whether the bank account exists.
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How to use IBAN Validator

  1. Paste or type an IBAN
  2. The tool removes spaces and normalizes the input
  3. Validation checks country code, length, and mod-97 checksum
  4. See if the IBAN is valid and which country it belongs to

What is IBAN Validator?

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FAQ

What is the mod-97 algorithm?
It is the ISO standard checksum used to validate IBANs by rearranging digits and dividing by 97.
Does this check if the bank account exists?
No. It only validates format and checksum. Real account verification requires a banking service.

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Author

MW
Marcus Webb"The DevTool Craftsman"

Full-Stack Developer & Tools Architect

Marcus has been writing code since the dial-up era. He has contributed to open-source developer tools, built CI/CD pipelines for startups, and debugged production incidents at 3 AM more times than he would like to admit. His philosophy is that the best developer tool is the one that gets out of your way, and he writes about practical tooling that helps teams ship faster with fewer headaches.

📖 IBAN Validator on Wikipedia·Developer Tools on Wikipedia·IBAN Validator on Britannica

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