IBAN Validator
Validate IBAN numbers locally in your browser with country-specific length, base format, BBAN structure, and mod97 checksum checks.
IBAN Validator
A browser-based tool to strictly validate International Bank Account Numbers (IBAN). It runs entirely locally and checks country-specific length, base format, BBAN structure, and the mod97 checksum.
How to use
- Paste or type an IBAN into the input box. Spaces and hyphens are supported.
- The tool normalizes the input automatically and validates country code, length, base format, structure, and checksum in real time.
- Review the normalized value, grouped format, BBAN, check digits, and country example in the result area.
Features
- 100% local processing with no bank data upload
- Checks country length, base format, BBAN structure, and mod97 checksum
- Shows normalized IBAN, grouped output, BBAN, and expected check digits
Why use this?
- Quickly verify whether an IBAN follows the standard
- Catch length and checksum errors in payments, finance input, or data cleaning workflows
- Free, fast, secure, and independent from third-party APIs