IBAN validator

Check an IBAN's format, country length, and mod-97 check digits.

Validated in this browser. Nothing is sent anywhere.

Checks format, country length, and the mod-97 check digit only — it cannot confirm the account exists or is active. Do not paste real account numbers into web tools.

How to use

  1. Paste the IBAN.
  2. Run the check.
  3. Read the verdict and normalized form.

What it supports

Consistency only — a passing IBAN does not prove the account exists. Never paste real account numbers into web tools.

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