IBAN Calculator
Validate and generate IBAN numbers for international bank transfers
Choose Function
Validate IBAN
Enter IBAN with or without spaces
Validation Options
IBAN Results
Valid IBAN
The IBAN number is valid and correctly formatted
IBAN Details
Formatted IBAN
Validation Checks
Enter IBAN details
Validate an existing IBAN or generate a new one
How to Use the IBAN Calculator
Validate and generate International Bank Account Numbers
Validate IBAN
Check if an existing IBAN number is valid and correctly formatted
Generate IBAN
Create a valid IBAN from country code, bank code, and account number
Format & Copy
Get properly formatted IBAN with spaces and copy to clipboard
IBAN Calculator FAQ
Can this tool generate a valid IBAN from my account number?
Yes. Select your country, enter your local bank code and account number, and the calculator builds the IBAN with the correct length, format, and check digits for that country.
What are the two check digits in an IBAN for?
The check digits let any system verify an IBAN was not mistyped before sending a payment. They are calculated with the MOD 97 algorithm defined in ISO 13616.
Does it validate IBANs from other countries?
Yes. Paste any IBAN and the validator decodes the country, bank code, and account number while re-computing the check digits to confirm the IBAN is structurally valid.