Free IBAN Checker – Validate Your IBAN Number Online
Enter your IBAN below to instantly verify its format, country code, and checksum. Ensure your bank details are correct before sending international payments.
🔒 Validated locally in your browser. No data stored or transmitted.
Understanding IBAN Structure
An IBAN (International Bank Account Number) identifies your country, bank, and specific account. It is made up of four parts:
- Country code: Two letters identifying the country (e.g. GB for UK).
- Check digits: Two numbers that validate the IBAN using a MOD97 checksum.
- Bank code: Identifies your bank or financial institution.
- Account number: Your unique account reference within the bank.
Common IBAN Mistakes to Avoid
- Typing errors: Always copy and paste your IBAN rather than typing it manually.
- Spaces and hyphens: Enter IBANs without spaces or hyphens — our checker strips these automatically.
- Wrong country format: Each country has a fixed IBAN length. The UK uses 22 characters; Germany uses 22; France uses 27.
- Recipient mismatch: Always ensure the account name matches the registered bank record.
IBAN Checker — Frequently Asked Questions
What is an IBAN?
An IBAN (International Bank Account Number) is a standardised number that uniquely identifies a bank account for international transfers. It combines a country code, check digits, and account details into a single string.
How does this IBAN checker work?
Our tool validates the structure, length, and MOD97 checksum of your IBAN entirely within your browser. It checks the format is correct but cannot confirm the account is active — always verify with your bank before transferring funds.
Do all countries use IBANs?
No. IBANs are standard across Europe and many other countries globally, but the US, Canada, and Australia do not use IBANs for domestic payments. Check with your recipient’s bank if you are unsure.
Is my IBAN data saved?
No. All validation runs locally in your browser using JavaScript. No IBAN data is ever sent to our servers or stored anywhere.
What does MOD97 mean?
MOD97 is the mathematical algorithm used to verify an IBAN’s check digits. It rearranges the IBAN and divides the resulting number by 97 — a valid IBAN always gives a remainder of 1.
Before You Send Money Abroad
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