Is it safe to share my IBAN?

IBAN alone can only receive payments, not send them. However, combined with other details it could enable unauthorized direct debits in some countries. Share only with trusted parties for legitimate transactions.

IBAN Validator & Decoder - Check International Bank Numbers

Validate and decode IBAN numbers instantly. Verify mod-97 checksum, extract country, bank code, and account details. Supports 100+ countries. Free online tool.

Enter IBAN

Enter IBAN with or without spaces

Sample IBANs

Click to test (examples only):

Invalid examples:

IBAN Structure

DE89370400440532013000

DE Country code (ISO 3166)
89 Check digits (mod-97)
37040044 Bank code (BBAN start)
0532013000 Account number

Validation Result

Enter an IBAN to validate and decode

IBAN (formatted)	-
Country	-
Check Digits	-
Bank Code	-
Branch Code	-
Account Number	-
BBAN	-

IBAN Lengths by Country

Europe

DE Germany: 22
GB UK: 22
FR France: 27
ES Spain: 24
IT Italy: 27
NL Netherlands: 18
CH Switzerland: 21

Nordic

SE Sweden: 24
NO Norway: 15
DK Denmark: 18
FI Finland: 18

Middle East

AE UAE: 23
SA Saudi: 24
QA Qatar: 29
KW Kuwait: 30

Other

BR Brazil: 29
TR Turkey: 26
IL Israel: 23
MT Malta: 31

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Frequently Asked Questions

IBAN (International Bank Account Number) is a standardized format for bank account numbers used in 80+ countries. It contains a country code, check digits, and the domestic bank account number, making international transfers faster and more reliable.

IBAN uses the mod-97 algorithm (ISO 7064). The first 4 characters are moved to the end, letters are converted to numbers (A=10, B=11, etc.), and the result is divided by 97. If the remainder is 1, the IBAN is valid. This catches 99.97% of input errors.

An IBAN contains: country code (2 letters), check digits (2 numbers), bank/institution code, branch code (in some countries), and the account number. The exact structure varies by country.

No. IBAN identifies a specific bank account, while SWIFT/BIC identifies the bank itself. For international transfers, you typically need both: IBAN for the account and BIC for routing to the correct bank.

IBAN is mandatory in all EU/EEA countries and used in 80+ countries including UK, Switzerland, UAE, Saudi Arabia, and most of the Middle East. The US and Canada don't use IBAN; they use ABA routing numbers instead.

Each country has different domestic account numbering systems. Germany uses 22 characters, UK uses 22, France uses 27, and Malta uses 31. The IBAN standard accommodates these differences with country-specific lengths.

Yes. The first two letters identify the country, which determines the expected length and format. Our validator automatically detects the country and applies the correct validation rules.

Common reasons: wrong length for the country, failed mod-97 checksum (typos), invalid country code, or incorrect format. A single wrong character will cause validation to fail.

No. All validation happens locally in your browser using JavaScript. Your IBAN is never sent to any server. You can verify this by using the tool offline after the page loads.