IBAN Validator
Check and validate IBAN account numbers with support for country formats.
IBAN Verification
The validation applies Country-specific length checks and performs a modular mod-97 check on the transposed string digits.
Verification Result
Country Code—
Check Digits—
BBAN—
Frequently Asked Questions
How does the IBAN validator work?
It checks length restrictions by country, shifts country codes to the end, converts letters to digits, and runs a Modulo 97 check. If the remainder is 1, the checksum is correct.
Is my bank account number safe?
Yes, checksum validation is computed 100% locally on your machine.