IBAN Calculator
Turn a country, bank code and account number into a correctly formatted IBAN, with the two check digits calculated for you.
Read the guide: How to Build an IBAN From a Bank Code and Account NumberAccount details
Your IBAN
DE89 3704 0044 0532 0130 00
How it works
- 1
Pick the country
Choose the country the account belongs to so the right format is used.
- 2
Enter bank and account
Type the national bank code and the account number exactly as your bank shows them.
- 3
Copy your IBAN
The IBAN appears instantly with its check digits. Copy it with one click.
Instant & 100% private — nothing is uploaded
Every calculation runs locally in your browser. The income, balances and goals you enter stay on your own device and are never sent to a server — nothing is stored, logged or shared.
Frequently asked questions
- Does a calculated IBAN definitely work?
- It is mathematically valid — the format and check digits are correct. Whether the account exists is up to your bank; always confirm important details with them.
- Which countries are supported?
- The check digits are computed for every country that uses IBAN. A structural breakdown of bank and account parts is shown for the most common ones.
- Is anything uploaded?
- No. The IBAN is built entirely in your browser; nothing is sent to a server.
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