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IBAN checker
Before you put an IBAN on an invoice or send a payment: is there a typo?
What you type never leaves your device. The calculation runs in your browser; nothing is sent to a server.
How to use it
- 01Paste the IBAN; spaces, dashes and lower case are fine.
- 02The result appears at once: valid or not, and why (length, characters, check digits).
- 03If it is valid, copy it in groups of four.
FAQ
Is what I type stored anywhere?
No. Everything is worked out in your browser; nothing is sent to a server or stored.
Does “valid” mean the account exists?
No. It means the number is well formed (it catches single-digit mistakes and most swaps). Only the bank can confirm the account is open and who holds it; always check the payee name.
Which countries are supported?
Any IBAN country for the check digits; exact lengths are checked for Türkiye, the EU/EEA, the UK, Switzerland and a few others.