IBAN Checker User Guide – Easily Validate International Bank Accounts

What is an IBAN Number?

IBAN (International Bank Account Number) is an internationally recognised standard (ISO 13616) used to uniquely identify bank accounts for cross‑border payments. It can be up to 34 characters long and consists of a 2‑letter country code, two check digits, and the basic bank account number (BBAN). Our IBAN Checker applies the mod97 algorithm to verify the structural validity, helping to reduce transfer errors.

How to Use This IBAN Checker?

1. Paste or type an IBAN (spaces and hyphens are automatically removed) into the input field.
2. Click the “Validate” button – the system will perform length, country prefix, and mod97 checks.
3. View the result: you’ll instantly know whether the IBAN is structurally valid.

This IBAN Checker is completely free and requires no registration. It’s ideal for finance professionals, accounting staff, and anyone handling international payments.

Frequently Asked Questions

1. Does the IBAN Checker guarantee that the account actually exists?

No. This tool only verifies the structural correctness (mod97 checksum) of the IBAN. It cannot confirm whether the bank account is open or accepts transfers. For real‑time validation, you should consult your bank or use a SWIFT gateway.

2. Why does my IBAN show as invalid?

Possible reasons: the length does not match the country’s standard, the check digits are incorrect, or the IBAN contains forbidden characters. Double‑check the number, or try one of our sample IBANs.

3. Which countries are supported?

All countries that have adopted the IBAN standard are supported, including all EU member states, as well as many in the Middle East and Africa.

If you have further questions, feel free to reach out. Thank you for using our IBAN Checker!