Regex Editor & Tester

Validates International Bank Account Numbers (IBANs) issued by any SEPA country as of October 2021. Each alternative matches a two-letter country code, two check digits, and a country-specific BBAN whose total length (15–31 characters) and letter/digit layout vary by nation (e.g., DE20, GB22, IT27). Ideal for validating bank details in European payment, transfer, or invoicing forms.