Free · Everyday checks

IBAN Checker & Formatter

Check an IBAN's country structure and checksum, then format it into readable groups.

  • Clear answer
  • Runs in your browser
  • No signup

Bank account check

Does this IBAN pass its checks?

IBAN result

Valid checksum

The country structure, length, and MOD-97 checksum pass. This does not prove the account exists.

Country
GB
Check digits
82
Length
22

GB82 WEST 1234 5698 7654 32

Powered by iban.js, an open-source library.

Three simple steps

How to use it

  1. Paste the IBAN with or without spaces.
  2. Check the structure and checksum result.
  3. Confirm the account details with the recipient before sending money.

Private by default

Your entries and files stay in this browser tab. Bookify does not upload or save them. Reference data can change, so confirm important results with the right local source.