The IBAN (International Bank Account Number) Calculator can convert a national account number into an IBAN, validate an IBAN, and find bank information for an IBAN. These functions are useful when performing cross-border online transactions in Europe, validating account numbers, etc. Also, in the event of a fraudulent money transfer, the police can use an IBAN find out about the bank involved and its location. The IBAN Calculator guarantees the correctness of its calculations. Its services can be accessed directly through the website or programmatically via SOAP API.