United Kingdom IBAN — Format, Example & Validator
The United Kingdom IBAN is 22 characters long. See the United Kingdom IBAN format, an example, and validate or generate a United Kingdom IBAN for free.
A United Kingdom IBAN is 22 characters long and starts with the country code GB. Validate or generate one below.
Format:
| Country | United Kingdom (GB) |
| IBAN length | 22 characters |
| Bank code | 4 chars (b) |
| Branch code | 6 chars (s) |
| Account number | 8 chars (c) |
| Example | GB18 0000 0000 0000 0000 00 |
About the United Kingdom IBAN
An IBAN (International Bank Account Number) for United Kingdom has 22 characters: the country code GB, a 2-digit check number, a 4-character bank code, a 6-character branch code and the account number. The check digits are calculated with the ISO 7064 MOD-97 algorithm, so a single typo makes the IBAN invalid — which is what this tool checks.
FAQ
How many digits is a United Kingdom IBAN?
A United Kingdom IBAN is 22 characters long, including the "GB" country code and two check digits.
What does a United Kingdom IBAN look like?
It follows the pattern GBkk bbbb ssss sscc cccc cc — for example GB18 0000 0000 0000 0000 00.
How do I validate a United Kingdom IBAN?
Paste it into the Validate tab above. The tool checks the length and the MOD-97 checksum and decodes the bank and account parts.