🏦 IBAN Validator & Checker

Verify any IBAN instantly with the official MOD-97 checksum — country format, length check and BBAN breakdown included.

Paste or type any IBAN — spaces are fine. Works for all European countries and beyond.
How validation works: the first 4 characters move to the end, letters are converted to numbers (A=10 … Z=35), and the result must have remainder 1 when divided by 97 — the official MOD-97 algorithm from the IBAN standard.

📏 IBAN Formats by Country

Official IBAN lengths per country (total characters incl. the 2-letter country code and 2 check digits):

CountryCodeLengthCountryCodeLength

How to use

  1. Paste your IBAN into the box above (spaces don't matter).
  2. Click Validate IBAN — the MOD-97 checksum, country format and length are checked.
  3. Read the result: a green ✅ means the IBAN structure is valid; a red ❌ tells you exactly what's wrong.

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