IBAN regular expressions

iban-regex.md

IBAN regular expression

The following regular expression will match:

• AB12 1234 1234 1234 1234
• AB12 1234 1234 1234 1234 1
• AB12 1234 1234 1234 1234 12

but also:

• AB123456789012345678
• AB1234567890123456789
• AB12345678901234567890

^[A-Z]{2}(?:[ ]?[0-9]){18,20}$

If you also need to match IBAN formats by country (BBAN Format), use:

^([A-Z]{2}[ \-]?[0-9]{2})(?=(?:[ \-]?[A-Z0-9]){9,30}$)((?:[ \-]?[A-Z0-9]{3,5}){2,7})([ \-]?[A-Z0-9]{1,3})?$