IBAN checker
Check an IBAN before you send an international payment. The checker confirms the length for that country and the two check digits, and splits the IBAN into its parts.
What an IBAN is
An IBAN (International Bank Account Number) identifies a bank account for cross-border payments. It's used across Europe, the UK, the Middle East and many other countries. It is defined in the ISO 13616 standard and can be up to 34 characters long.
Every IBAN starts with a two-letter country code and two check digits, followed by the country's domestic account number, called the BBAN. Each country has a fixed IBAN length: 22 characters for Germany and the UK, 27 for France, 18 for the Netherlands.
How the check digits work
Move the first four characters to the end, replace each letter with a number (A = 10, B = 11, up to Z = 35), and divide the result by 97. A valid IBAN always leaves a remainder of 1.
GB82WEST12345698765432 → WEST12345698765432GB82 → … mod 97 = 1
Does the US use IBANs?
No. US banks use a routing number and account number instead. To receive an international payment into a US account, give the sender your bank's SWIFT code, routing number and account number.
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Common questions
Does a valid IBAN guarantee the account exists?
No. A valid result means the format and check digits are correct, which rules out almost all typos. Only the bank can confirm the account.
Can I type the IBAN with spaces?
Yes. Spaces and dashes are ignored. IBANs are often written in groups of four characters to make them easier to read.
Do I need a SWIFT code as well as an IBAN?
For payments within SEPA, the IBAN is usually enough. For other international transfers, banks often ask for the SWIFT/BIC code too.