Top of main content

Your IBAN questions answered

Try our IBAN generator and learn how you can check whether your number is right


Your account number will only be used to create an IBAN. We won't share, store or use it for any other purpose. Please remember to keep your personal information safe.

The HSBC Greece IBAN calculator will convert any 12 digit number to IBAN.

You will need to check with the account beneficiary if the 12 digit account number is a valid one.

What is an IBAN?

IBAN stands for International Bank Account Number. It's a bank account number that is recognised by banks and other financial institutions around the world. You often need to use an IBAN when you make or receive cross-border payments for certain countries and regions that mandate the use of IBAN for international payments.

It's a standardised way of identifying a bank account, which cuts down on errors and delays in sending international payments. 

How many numbers does an IBAN have?

IBANs are different in length, depending on the country or region of origin. That's because an IBAN simply adds a standard prefix to a person's domestic account number (also known as a basic bank account number).

The prefix includes:

  • the country code (2 letters)
  • the check number (2 numbers)
  • the bank code (number of characters varies)

The basic bank account number will also vary in length depending on the country or region it comes from. But each country or region has a standard length for their basic bank account numbers and bank codes. So you can tell how long an IBAN should be based on the country or region it is from.

Where can I find my IBAN?

You can find your own IBAN in online banking by selecting the account and viewing its details. Alternatively, your IBAN is listed on your online or printed statements.

How do I get a beneficiary's IBAN?

Our IBAN generator will create the IBAN for you if you have the beneficiary's basic bank account number details.

How can I check if an IBAN is right?

You can check if an IBAN given to you by a beneficiary is configured correctly by using our IBAN generator. Please bear in mind that this tool can only generate an accurate IBAN using the account details provided. It cannot verify the actual existence of an account.

You might be interested in


Access and manage your worldwide HSBC accounts online.


Bank securely at the branch that never closes.