Validate IBAN
Check an IBAN (PT50…) and format it in groups of four.
On this device: nothing is uploaded.
How it works
A Portuguese IBAN has 25 characters: PT, two check digits and 21 digits (bank, branch, account, NIB). The tool checks the country length and the modulo 97 check from ISO 13616.
This proves the IBAN is well formed, not that the account exists. We do not show bank names since that table changes and we will not invent it.
FAQ
Does it work for other countries?
Yes. Where the length is known it checks it; otherwise it only does the modulo 97 check.