IBAN Validator

An IBAN (International Bank Account Number) is an international bank account number format with a built-in checksum under ISO 7064 (mod 97). This tool verifies that checksum, along with the format and length expected for the country encoded in the IBAN.

How to use it

• Paste an IBAN (with or without spaces) — the checksum and format check happen instantly.
• The first two letters identify the country, and the tool checks the number's length against what's expected for that country.
• If validation fails, it tells you exactly what's wrong: length, format, or checksum.

Common uses

• Basic validation of an IBAN field in a payment or vendor-registration form before it hits the backend.
• Quickly checking whether a manually copied account number from a document contains a typo.
• Verifying the format of an IBAN received from a client or partner in another country.

Things to keep in mind

An IBAN that passes the MOD-97 check only confirms the number's structure is correct, not that the account is real or active.

Not every country uses IBAN — some banking systems (the US, for example) have their own separate account number formats.