IBAN Validator (International Bank Account Number)
Local ProcessingValidate International Bank Account Numbers (IBAN) with country code length checks and MOD-97-10 checksum calculation.
How It Works & Processing Standards
Validate International Bank Account Numbers (IBAN) with country code length checks and MOD-97-10 checksum calculation.
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Current Limits
- Maximum input length: 100,000 characters
An IBAN has a 2-letter country code, 2 check digits and the domestic account details. Paste one to verify the country length and the ISO 13616 mod-97 checksum and catch typos.
Only the format and checksum are checked, not whether the account exists.
What You Can Do
- Checksum check
- mod-97 catches even a single wrong digit.
- Tidy format
- Normalises spaces and case into the standard groups of four.
How to Use IBAN Validator (International Bank Account Number)
- 1Paste an IBANSpaces are fine.
- 2Read the resultSee validity, country and the tidy form.
Examples
Common Use Cases
- Catching typos in a payee's account before an international transfer
- Testing forms that collect supplier bank details
- Standardising IBANs received in a spreadsheet
Frequently Asked Questions (FAQ)
Do all countries use IBAN?
No. Countries such as the US and South Korea do not; transfers there use a SWIFT (BIC) code plus the domestic account number.