IBAN Validator

1. Enter an IBAN — Type or paste an International Bank Account Number. Spaces are removed automatically.
2. Instant validation — The IBAN is validated in real-time using the MOD-97 checksum algorithm with country-specific structure checks.
3. View details — See the country, length, checksum, bank code, branch code, and account number details.
4. Try examples — Click the Example button to test with valid sample IBANs from different countries.

All validation is performed 100% client-side in your browser. No bank data is sent to any server.

The International Bank Account Number (IBAN) is a standardized international numbering system for bank accounts, used to facilitate cross-border transactions. It was developed by the International Organization for Standardization (ISO) under ISO 13616.

An IBAN consists of up to 34 alphanumeric characters, beginning with a two-letter country code, followed by two check digits, and a Basic Bank Account Number (BBAN) that varies by country. The BBAN typically includes a bank identifier, branch code, and account number.

The IBAN system is used in over 100 countries worldwide, including all European Union members, and is essential for SEPA (Single Euro Payments Area) transfers.