United Kingdom 22 charactersNational structure respected
GB02BDIR03980104901276
- Country code
- GB
- IBAN check digits
- 02
- Bank code
- BDIR
- Branch code
- 039801
- Account number
- 04901276
Fake IBAN generator: valid IBANs for accounts that don't exist.
Generate structurally correct IBANs to test forms, payment APIs and databases. MOD 97 check digits are computed, plus national checks for France, Monaco, Belgium, Spain, Italy, San Marino, Portugal and Norway. Everything runs in your browser.
Bulk generation
Up to 1,000 IBANs for the selected country, exported as text, CSV, JSON or XML.
Validate an IBAN
Paste an IBAN to check its length, structure and check digits. The check tells you whether the number is well formed, not whether the account exists.
How the check digits are calculated
The steps below follow the IBAN shown above and update with every new one.
Take the BBAN, the national part of the number (18 characters for United Kingdom).
BDIR03980104901276Move the country code, followed by “00”, to the end.
BDIR03980104901276GB00Replace each letter with a number (A = 10 … Z = 35). Here GB becomes 1611.
1113182703980104901276161100Divide this large number by 97 and keep the remainder.
1113182703980104901276161100 mod 97 = 96Subtract the remainder from 98: the result is the check digits, placed right after the country code.
98 − 96 = 02 → GB02BDIR03980104901276
Generators by country
Each page explains the national structure, with an example and the checks specific to that country.
Frequently asked questions
Do these IBANs belong to real accounts?
No. Bank, branch and account codes are random. The number passes format and check-digit validation, but no bank or account holder is linked to it, and a transfer to it would be rejected.
What are fake IBANs used for?
Filling test databases, checking form validation, feeding automated tests, or learning the MOD 97 algorithm without handling real bank details.
What is a national check?
Some countries add their own checksum inside the BBAN, such as the RIB key in France or the CIN in Italy. For countries marked with a national check in the list, it is computed; for the others, the structure is respected but any internal check is not guaranteed.
Is my data sent anywhere?
No. Generation and validation run entirely in your browser, with no network requests.