Instant IBAN validation and SWIFT/BIC lookup that runs entirely in your browser. Your account numbers never touch a server.
How it works
Type or paste any IBAN — up to 34 characters, from any supported country. Works with or without spaces.
Structure, MOD-97 checksum, and country-specific length rules are verified instantly in JavaScript. No network request is made.
Get the BIC/SWIFT code, bank name, and country. Everything you need before initiating a wire transfer.
Most IBAN validators send your input to a server. That means account numbers, bank details, and payment intent data end up in logs you don't control. IBANcheck doesn't have that problem — the validation engine ships to your browser and runs there.
Who it's for
Catch invalid IBANs before your bank does. Reconcile supplier payment details without sending them through a third-party service.
Validate IBAN inputs in payment forms without an API dependency. No rate limits, no auth headers, no service agreement to sign.
Get paid correctly from clients abroad. Check that an IBAN you've been given is actually valid before you spend time chasing a failed transfer.
Early access
We're putting the finishing touches on the validator. Drop your email and we'll send one message when it's live.
No spam. One email when we launch.