IBAN Validator
Paste one or more IBANs and see whether each one is valid, which country it belongs to and, for Turkish IBANs, which bank issued it.
Enter an IBAN to check it.
About this tool
An International Bank Account Number starts with a two-letter country code and two check digits, followed by the domestic account number (BBAN) whose length is fixed per country: 22 characters in Germany, 26 in Türkiye, 27 in France. The check digits are computed with the ISO 7064 mod 97-10 algorithm, which catches any single typo and most transposed characters.
Passing the checksum means the number is well formed, not that the account exists or belongs to a particular person. Banks verify that when a transfer is made. The validator runs entirely in your browser, so account numbers are never sent anywhere.
Frequently asked questions
- Does a valid checksum mean the account exists?
- No. It confirms the IBAN is structurally correct and free of typos. Only the bank can confirm the account is open.
- Can I check several IBANs at once?
- Yes. Put one per line and each gets its own result.
- Why is the IBAN the wrong length?
- Each country has a fixed length. A missing or extra character usually means a copy-paste error; compare with the printed statement.
- Are my IBANs stored?
- No. Validation happens in your browser and nothing is transmitted.