Bank of Ireland IBAN Calculator
Convert your Irish sort code and account number into a valid Bank of Ireland IBAN.
Bank code is fixed to BOFI for Bank of Ireland.
For educational use. Always confirm payment details with your bank before transferring funds.
What is a Bank of Ireland IBAN?
An IBAN (International Bank Account Number) is a standardized account format used for domestic and international payments. In Ireland, an IBAN is 22 characters long. For Bank of Ireland, it usually starts with IE followed by 2 check digits and the bank code BOFI.
How the calculator builds your IBAN
This calculator follows the Irish IBAN structure:
- Country code: IE
- Check digits: 2 numbers calculated using the MOD-97 algorithm
- Bank code: BOFI (Bank of Ireland)
- Sort code: 6 digits
- Account number: 8 digits (left-padded with zeros if needed)
The check digits are generated by moving the country code and temporary digits to the end, converting letters to numbers (A=10, B=11, etc.), and then applying MOD-97. This ensures the IBAN is mathematically valid.
How to use this tool
1) Enter your sort code
You can type it with or without separators (for example: 90-12-34 or 901234). The calculator automatically removes spaces and dashes.
2) Enter your account number
Enter up to 8 digits. If your number has fewer digits, the calculator adds leading zeros to match the required format.
3) Generate and validate
Click Generate IBAN to produce the result. You can then copy it or paste any IBAN in the validator to check if it is structurally correct.
Common mistakes to avoid
- Using a sort code that is not exactly 6 digits
- Typing letters in the account number field
- Forgetting leading zeros in shorter account numbers
- Confusing a valid IBAN structure with account ownership verification (they are not the same)
FAQ
Does this confirm the account belongs to a person or company?
No. It validates format and check digits only. It does not confirm account ownership, status, or recipient identity.
Is the BIC/SWIFT code included?
The calculator shows the commonly used Bank of Ireland BIC format (BOFIIE2D). Some specific branches or services may use variants.
Can I use this for non-Bank of Ireland accounts?
This generator is intended for Bank of Ireland because it fixes the bank code to BOFI. You can still validate other Irish IBANs in the validator section.
Final note
This Bank of Ireland IBAN calculator is designed to make formatting and check-digit validation quick and easy. Before sending payments, always cross-check details with official bank documentation, your banking app, or support team.