IBAN Checker
Validate an IBAN — or calculate its check digits — before money moves.
A structurally valid IBAN is not proof that the account exists or is open. Always confirm bank details with the recipient before transferring funds. Nothing you enter leaves your browser.
How to use the IBAN Checker
- Paste the full IBAN, spaces included — they are ignored.
- Read the verdict: valid, or the exact reason it fails.
- Or switch to "Calculate check digits" and build an IBAN from a country and BBAN.
IBAN Checker FAQs
What does the IBAN checker actually check?
Three things, in order: the first two letters are a country in the IBAN scheme, the total length matches that country's official IBAN length, and the two check digits pass the ISO 7064 MOD-97-10 checksum. All three must pass for a "valid" verdict.
Does a valid IBAN mean the bank account exists?
No. Validation is pure arithmetic on the number itself — it cannot tell you whether the account is open, funded, or belongs to a particular person. Always confirm the IBAN with the recipient or their bank before sending money.
Which countries are covered?
Over 70 IBAN countries, including Germany, the UK, France, Saudi Arabia, the UAE, Qatar, Kuwait, Pakistan, Turkey and Egypt. If a country code is not in the IBAN scheme, the checker says so instead of guessing.
How are IBAN check digits calculated?
Move the country code and "00" to the end of the BBAN, replace each letter with two digits (A=10 … Z=35), take the result modulo 97, and subtract from 98. The answer, padded to two digits, is the check digits. The "Calculate check digits" mode does this for you.
Is it safe to paste a real IBAN here?
Yes, for this tool: every check runs in your browser and the IBAN is never sent to a server or stored. An IBAN alone cannot be used to take money from an account — it is only used to send money to it.
Free IBAN Checker — Validate Any IBAN Before You Send Money
This free IBAN checker validates any International Bank Account Number in your browser: it confirms the country code, checks the length against that country's official specification, and verifies the MOD-97 check digits — then breaks the IBAN into its country, check digits and BBAN.
How to use it, step by step
- Paste the IBAN, with or without spaces.
- Read the valid/invalid verdict and the exact reason if it fails.
- Copy the correctly grouped IBAN, or switch modes to calculate check digits for a new IBAN.
Popular uses
- Before a wire transfer: catch a typo that would bounce the payment.
- For businesses: validate customer bank details at entry.
- For developers: test IBAN handling against real checksum rules.
- For travellers and expats: check IBANs from a new country before use.