IBAN Validator
Check whether an IBAN has the right length and check digits.
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How to do it
- 1Fill in the boxes
Type your numbers or pick the options you need.
- 2See the result
The answer updates right away as you change a value.
- 3Use it
Copy the result or note it down. Nothing is sent anywhere.
About this tool
Type or paste an IBAN, with or without spaces. The tool checks the country length and the mod-97 check digits, so it catches most typing mistakes. It does not confirm that the account exists.
How the check works
An IBAN starts with a country code and two check digits, followed by the national account number. To validate it the first four characters are moved to the end, letters become numbers (A is 10, B is 11 and so on), and the remainder when divided by 97 must be 1. Each country has a fixed length, for example 22 for Germany and the UK and 27 for France.
What it cannot do
A valid IBAN is correctly formed but may belong to a closed account. Always confirm payee details before sending money, and be careful with requests that change bank details.
Privacy
The check runs in your browser and nothing is sent.
Frequently asked questions
What is an IBAN?
International Bank Account Number, a standard format for account numbers used across Europe and many other countries.
Does valid mean the account exists?
No. It only means the number is correctly formed.
Why do spaces not matter?
Spaces are for reading in groups of four and are ignored.
Is the IBAN stored?
No. The check happens in your browser only.