Check an IBAN Before You Send Money

A single wrong digit in an IBAN can send a transfer back or hold it up for days. The QodeCat IBAN Validator checks every IBAN you paste, one per line, and tells you clearly whether it is valid and, if not, why.

• Country and length: Checked against the official length for each of the 89 countries in the SWIFT IBAN registry.
• Checksum: The ISO 13616 mod-97 check catches almost every typo and swapped digit.
• Clear reasons: For example "Wrong length for TR: expected 26" or "Checksum failed".
• Details: Formatted IBAN in groups of four, country name and check digits, plus the bank code for TR, DE, ES, GB, FR, NL and IT (and the bank name for major Turkish banks).

Why use this tool?

Nothing Is Sent Anywhere

Bank details are sensitive. Many online IBAN checkers send what you type to their server. This one does every check in your browser with JavaScript, so your IBANs never leave your device.

Many IBANs at Once

Paste a whole column from a spreadsheet. Spaces are allowed, upper and lower case both work, and each line gets its own result.

Frequently Asked Questions