IBAN validator / United Kingdom
United Kingdom IBAN format (GB)
A United Kingdom IBAN is 22 characters long and begins with the country code GBfollowed by two check digits. Validate one below — the check runs in your browser (ISO 13616 mod-97).
- Country code
- GB
- IBAN length
- 22
- Example
- GB29NWBK60161331926819
Runs entirely in your browser — nothing is sent to a server. A valid IBAN format does not mean the account exists or is active.
Validate United Kingdom IBANs via API
curl "https://www.checkfmt.com/api/v1/iban?iban=GB29NWBK60161331926819&key=YOUR_KEY"