IBAN Validator - Validate International Bank Account Numbers Free
Validate IBAN numbers using mod-97 algorithm, detect country, and extract BBAN with proper formatting
Generators
Tool
Spaces are automatically handled
Example IBANs
How to Use
1Enter or paste an IBAN number in the input field
2The tool automatically removes spaces and validates the format
3See if the IBAN is valid or invalid with a clear indicator
4View the detected country from the 2-letter country code
5See the IBAN formatted with spaces every 4 characters for readability
6Extract the BBAN (Basic Bank Account Number) portion
Frequently Asked Questions
An IBAN (International Bank Account Number) is an internationally agreed system of identifying bank accounts across national borders. It starts with a 2-letter country code, followed by 2 check digits, and then the BBAN (Basic Bank Account Number).
IBAN validation uses the mod-97 algorithm. The IBAN is rearranged by moving the first 4 characters to the end, then letters are replaced with numbers (A=10, B=11, etc.). The resulting number must be divisible by 97 for the IBAN to be valid.
BBAN (Basic Bank Account Number) is the domestic bank account number without the country code and check digits. It contains the bank identifier, branch identifier, and account number in a country-specific format.
IBAN is mandatory in the EU/EEA and many other countries. Over 80 countries use IBAN, including Germany (DE), France (FR), UK (GB), Spain (ES), Netherlands (NL), and many more. The US and Canada do not use IBAN.