IBAN Validator

Validate, format & find BIC

100% Offline

🔐

Bank data stays private

All IBAN validations happen locally in your browser. No data is transmitted to servers.

🔍 Validate IBAN

🔧 Calculate IBAN

Calculate the IBAN from bank code and account number

Country

Bank Code

Account Number

📚 IBAN Lengths by Country

Deutschland

DE • 22 chars

Österreich

AT • 20 chars

Schweiz

CH • 21 chars

Frankreich

FR • 27 chars

Italien

IT • 27 chars

Spanien

ES • 24 chars

Niederlande

NL • 18 chars

Belgien

BE • 16 chars

Luxemburg

LU • 20 chars

Polen

PL • 28 chars

Großbritannien

GB • 22 chars

ℹ️ IBAN Structure (Germany)

DE89 3704 0044 0532 0130 00

Country Code • Check Digits • Bank Code • Account Number

How to Validate an IBAN

Enter or paste your IBAN number (spaces are automatically removed)
The tool validates the IBAN structure and checksum in real-time
View the country, bank code, and account number breakdown
For German IBANs, see the bank name and BIC code
Copy the formatted IBAN or BIC with one click

Frequently Asked Questions

What is an IBAN?

IBAN (International Bank Account Number) is a standardized international numbering system for bank accounts. It contains up to 34 alphanumeric characters including country code, check digits, and account details.

How does IBAN validation work?

IBAN validation uses the MOD-97 algorithm (ISO 7064). The check digits (positions 3-4) are calculated from the entire IBAN to ensure accuracy and detect typos.

What is a BIC/SWIFT code?

BIC (Bank Identifier Code) or SWIFT code is an 8-11 character code that identifies a specific bank for international transfers. It's often needed alongside the IBAN.

Is my IBAN data secure?

Yes, all validation happens entirely in your browser. No IBAN data is ever sent to any server - your banking information stays completely private.

Which countries are supported?

This tool validates IBANs from all SEPA countries and beyond. German IBANs also show bank name identification from the Bundesbank database.