Home
Tom Utilities

IBAN Validator

Developer Utilities

Validate an IBAN using the ISO 13616 Mod-97 checksum and read the country code and check digits.

How to use

Validating an IBAN

An IBAN starts with a two-letter country code, two check digits and up to thirty characters for the account. The Mod-97 calculation detects almost every typing mistake.

  1. Paste the IBAN, spaces are ignored.
  2. Read the result and the detected country.
  3. Copy the normalised number.

Frequently asked questions

What does the Mod-97 check prove?

It proves the IBAN is correctly formed. It does not prove that the account exists or is open.

Are spaces allowed in an IBAN?

Yes, printed IBANs are usually grouped in blocks of four for readability and the tool removes them before checking.

Related tools

Luhn Check Validator Validate credit card numbers with the Luhn algorithm and detect the network such as Visa, Mastercard or Amex. Random String Generator Generate secure random strings with custom length, character sets and ambiguous-character filtering. UUID / GUID Generator Generate random version 4 UUIDs and copy them one by one or in bulk. Hash Generator Compute MD5, SHA-1, SHA-256 and SHA-512 digests of any text. Timestamp Converter Convert between Unix timestamps, ISO 8601 and human readable local dates. Regex Tester Test regular expressions against sample text and inspect every match and capture group.