UK IBAN validator
Check a United Kingdom IBAN. A valid one starts with GB and is 22 characters long.
Run the check
What this checks
- Country code
- GB
- Total length
- 22 characters
- Layout
- 4-letter bank code, 6-digit sort code, 8-digit account number
- Registry example
- GB29NWBK60161331926819
Free to use, up to 6 checks a minute and 60 a day from one address. The check runs on our server and the result is not stored by this tool.
Where to find it
UK banks show the IBAN in online banking and on statements. Domestic UK payments normally use a sort code and account number instead.
Common mistakes
- Entering the sort code and account number only. An IBAN also needs GB, the check digits and the 4-letter bank code.
- Using the country code UK. The IBAN country code for the United Kingdom is GB.
Questions
How long is a UK IBAN?
22 characters: the country code GB, two check digits, then the national account part (4-letter bank code, 6-digit sort code, 8-digit account number).
Does a valid result mean the account exists?
No. The check confirms the country code, the length for that country and the mod-97 checksum. It cannot tell whether the bank or the account exists, or whether the name matches.
Is my IBAN stored?
The number is sent to this site over HTTPS to run the check. It is not written to a database by this tool. Normal server and platform logs may still record that a request happened.