French IBAN Calculator (RIB to IBAN)
Use this calculator to generate a valid French IBAN from bank details (code banque, code guichet, account number, and RIB key).
Educational tool for IBAN generation and checking. Always verify final banking details with your bank.
What is a French IBAN?
A French IBAN (International Bank Account Number) is a standardized account format used for domestic and international transfers. In France, an IBAN contains 27 characters and always starts with FR.
If you are doing a transfer, setting up direct debit, or validating account details for invoicing, a calculator helps reduce manual errors and speeds up your workflow.
French IBAN format explained
| Part | Length | Example | Description |
|---|---|---|---|
| Country code | 2 | FR | France identifier |
| IBAN check digits | 2 | 76 | Computed with MOD-97 |
| Bank code | 5 | 30004 | Code banque |
| Branch code | 5 | 00800 | Code guichet |
| Account number | 11 | 12345678901 | Numéro de compte |
| RIB key | 2 | 13 | Clé RIB |
How this calculator works
1) Input validation
- Bank and branch codes must be exactly 5 digits each.
- Account number must be exactly 11 alphanumeric characters.
- RIB key must be 2 digits if entered manually.
2) Optional RIB key calculation
If you leave the RIB key empty, the tool calculates it automatically from your bank code, branch code, and account number using the standard French method.
3) IBAN check digits (MOD-97)
The script then computes the IBAN check digits and returns a formatted result like:
FR76 3000 4008 0012 3456 7890 113
Why use an IBAN France calculator?
- Reduces data entry mistakes in banking forms.
- Helps finance teams prepare SEPA transfers more confidently.
- Useful for freelancers, accountants, and SaaS onboarding flows.
- Provides a quick check before storing beneficiary details.
Common mistakes to avoid
- Using fewer than 11 characters for account number.
- Including spaces in data fields (the calculator removes them, but consistency helps).
- Confusing RIB key and IBAN check digits (they are different).
- Assuming any 27-character string starting with FR is valid.
FAQ
Can this generate any French IBAN?
It can generate mathematically valid IBAN structures from your input. It does not verify whether the account truly exists at a bank.
Does this support letters in account numbers?
Yes. French account numbers may contain letters. The calculator handles alphanumeric values for both RIB and IBAN logic.
Is this the same as SWIFT/BIC?
No. IBAN identifies the account number structure, while BIC/SWIFT identifies the bank institution for international routing.
Final note
This calculator is ideal for quick checks, development testing, and educational use. For real transactions, always validate details with official bank documents or your banking provider.