IBAN validator
Validate an IBAN instantly: length, structure, check digits and national check. Identifies the bank where an official directory is available.
🔒 Validation runs in your browser: the IBAN is never sent to a server or stored.
IBAN format by country
k = check digits · b = bank code · s = branch · x = national check · c = account
| Country | Code | Length | Format |
|---|---|---|---|
| Albania | AL | 28 | ALkk bbbs sssx cccc cccc cccc cccc |
| Andorra | AD | 24 | ADkk bbbb ssss cccc cccc cccc |
| Austria | AT | 20 | ATkk bbbb bccc cccc cccc |
| Belgium | BE | 16 | BEkk bbbc cccc ccxx |
| Bulgaria | BG | 22 | BGkk bbbb ssss cccc cccc cc |
| Croatia | HR | 21 | HRkk bbbb bbbc cccc cccc c |
| Cyprus | CY | 28 | CYkk bbbs ssss cccc cccc cccc cccc |
| Czech Republic | CZ | 24 | CZkk bbbb ssss sscc cccc cccc |
| Denmark | DK | 18 | DKkk bbbb cccc cccc cc |
| Estonia | EE | 20 | EEkk bbss cccc cccc cccx |
| Finland | FI | 18 | FIkk bbbc cccc cccc cx |
| France | FR | 27 | FRkk bbbb bsss sscc cccc cccc cxx |
| Germany | DE | 22 | DEkk bbbb bbbb cccc cccc cc |
| Gibraltar | GI | 23 | GIkk bbbb cccc cccc cccc ccc |
| Greece | GR | 27 | GRkk bbbs sssc cccc cccc cccc ccc |
| Hungary | HU | 28 | HUkk bbbs sssc cccc cccc cccc cccx |
| Iceland | IS | 26 | ISkk bbss cccc cccc cccc cccc cc |
| Ireland | IE | 22 | IEkk bbbb ssss sscc cccc cc |
| Italy | IT | 27 | ITkk xbbb bbss sssc cccc cccc ccc |
| Latvia | LV | 21 | LVkk bbbb cccc cccc cccc c |
| Liechtenstein | LI | 21 | LIkk bbbb bccc cccc cccc c |
| Lithuania | LT | 20 | LTkk bbbb bccc cccc cccc |
| Luxembourg | LU | 20 | LUkk bbbc cccc cccc cccc |
| Malta | MT | 31 | MTkk bbbb ssss sccc cccc cccc cccc ccc |
| Moldova | MD | 24 | MDkk bbcc cccc cccc cccc cccc |
| Monaco | MC | 27 | MCkk bbbb bsss sscc cccc cccc cxx |
| Montenegro | ME | 22 | MEkk bbbc cccc cccc cccc xx |
| Netherlands | NL | 18 | NLkk bbbb cccc cccc cc |
| North Macedonia | MK | 19 | MKkk bbbc cccc cccc cxx |
| Norway | NO | 15 | NOkk bbbb cccc ccx |
| Poland | PL | 28 | PLkk bbbb bbbx cccc cccc cccc cccc |
| Portugal | PT | 25 | PTkk bbbb ssss cccc cccc cccx x |
| Romania | RO | 24 | ROkk bbbb cccc cccc cccc cccc |
| San Marino | SM | 27 | SMkk xbbb bbss sssc cccc cccc ccc |
| Serbia | RS | 22 | RSkk bbbc cccc cccc cccc xx |
| Slovakia | SK | 24 | SKkk bbbb ssss sscc cccc cccc |
| Slovenia | SI | 19 | SIkk bbss sccc cccc cxx |
| Spain | ES | 24 | ESkk bbbb ssss xxcc cccc cccc |
| Sweden | SE | 24 | SEkk bbbc cccc cccc cccc cccx |
| Switzerland | CH | 21 | CHkk bbbb bccc cccc cccc c |
| United Kingdom | GB | 22 | GBkk bbbb ssss sscc cccc cc |
| Vatican City | VA | 22 | VAkk bbbc cccc cccc cccc cc |
Frequently asked questions
How is an IBAN validated?
We check the country code, the country's length and structure, the ISO 13616 check digits (mod 97) and, where one exists and is verified, the national check.
Is the IBAN stored?
Validation runs in your browser: the IBAN is never sent to a server or stored.