Free tool
IBAN Validator
Check whether an International Bank Account Number (IBAN) is valid. We verify the country code, length, and mod-97 checksum locally in your browser — your data never leaves your device.
Validation runs entirely in your browser. We check the country code, length, and mod-97 checksum — we never store or transmit the IBAN.
Frequently asked questions
How do I verify an IBAN online?
Paste the IBAN into the field above and our online IBAN checker validates it instantly — there is nothing to install and no sign-up. It is a free IBAN verification tool that runs entirely in your browser.
What does the IBAN validator check?
It validates three things: the two-letter country code is recognised, the total length matches that country's IBAN specification, and the ISO 7064 mod-97 checksum passes. That is how you confirm a valid IBAN and validate an IBAN number.
Does a valid IBAN mean the account exists?
No. A valid IBAN is structurally and mathematically correct, but only the receiving bank can confirm that the account actually exists and is open.
Is my IBAN stored or sent anywhere?
No. All validation runs entirely in your browser. We never store, log, or transmit the IBAN you enter.