IBAN Validator
Validate, format & find BIC
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
📚 IBAN Lengths by Country
DE • 22 chars
AT • 20 chars
CH • 21 chars
FR • 27 chars
IT • 27 chars
ES • 24 chars
NL • 18 chars
BE • 16 chars
LU • 20 chars
PL • 28 chars
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.
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