Productivity
All toolsIBAN Validator
Validate and format international bank account numbers locally.
IBAN
Result
✓ Valid IBAN
Formatted:
DE89 3704 0044 0532 0130 00Country: DE
BBAN:
370400440532013000Frequently asked questions
- How does IBAN validation work?
- An IBAN is checked by moving the country code and check digits to the end, converting letters to numbers, and verifying that the resulting integer is divisible by 97 (mod-97 check). This catches almost all typos.
- Why is my IBAN failing the check?
- Common causes are mistyped digits, a wrong country code, or extra characters such as letters O instead of zeros. The tool strips spaces and casing for you, so any remaining failure points to a real input error.
- Does a valid IBAN mean the account exists?
- No. Mod-97 only proves the number is well formed for its country. Only the receiving bank can confirm the account is real and active.