UK IBAN Calculator
Generate and validate UK IBANs from BIC bank code, sort code, and account number
Enter 4-letter BIC bank code
Enter 6-digit sort code
Enter 8-digit account number
Capabilities & Limitations
- The generated IBAN is mathematically correct: format and checksum are valid.
- Limitations: We do NOT check if the BIC Bank Code, Sort Code, Account Number actually exist.
- Please verify the existence of the account data with the bank before usage.
Validate IBAN
Enter an IBAN to check if it is valid
What is a UK IBAN?
A UK IBAN (International Bank Account Number) consists of 22 characters: a country code (GB), 2 check digits, a 4-letter BIC bank code, a 6-digit sort code, and an 8-digit account number.
IBAN Format:
GB33 BUKB 2020 1555 5555 55
GB: Country code (United Kingdom)
33: Check digits
BUKB: BIC bank code (4 letters)
202015: Sort code (6 digits)
55555555: Account number (8 digits)
How to Use:
- 1.Enter your 4-letter BIC bank code
- 2.Enter your 6-digit sort code
- 3.Enter your 8-digit account number
- 4.Click "Generate IBAN" to create your IBAN
- 5.Copy the generated IBAN for your use
Important Notes:
- •UK IBANs always have exactly 22 characters
- •Account numbers shorter than 8 digits are automatically padded with leading zeros
- •The check digits are calculated automatically using the mod-97 algorithm
- •Always verify your IBAN with your bank before use