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IBAN checker

Paste an IBAN to check its length for the country and its mod-97 check digits. It catches mistyped characters before you send money or print the IBAN on an invoice.

Spaces are fine. Letters are capitalised for you.

India and the US don’t use IBAN: India uses IFSC + account number, the US an ABA routing number + account number. International transfers add the bank’s SWIFT/BIC.

IBANGB82 WEST 1234 5698 7654 32 Correct length for United Kingdom and the check digits match.
CountryGB · United Kingdom
Check digitsCharacters 3 and 482
BBANThe domestic account identifierWEST12345698765432
Bank codeFirst 4 letters of the bank’s BICWEST
Sort code12-34-56
Account number98765432

This checks the IBAN is well-formed and its check digits are right. It cannot confirm the account exists or who holds it.

Put your IBAN on an invoice

How to use the IBAN checker

  1. Paste or type the IBAN, with or without spaces.
  2. Read whether the length and check digits are valid.
  3. Check the decoded country, bank code and account match what you expect.
  4. Put the formatted IBAN on your invoice so clients copy it correctly.

IBAN structure

Every IBAN starts with a two-letter country code and two check digits, followed by the BBAN (basic bank account number), whose format each country sets. IBANs are written in groups of four for reading, but stored and sent without spaces.

CountryLengthExample
United Kingdom22GB82 WEST 1234 5698 7654 32
Germany22DE89 3704 0044 0532 0130 00
France27FR14 2004 1010 0505 0001 3M02 606
Netherlands18NL91 ABNA 0417 1643 00
Ireland22IE29 AIBK 9311 5212 3456 78
Spain24ES91 2100 0418 4502 0005 1332
United Arab Emirates23AE07 0331 2345 6789 0123 456
Norway15NO93 8601 1117 947

Countries that don't use IBAN

CountryWhat to use instead
IndiaIFSC code + account number; SWIFT/BIC from abroad
United StatesABA routing number + account number; SWIFT/BIC from abroad
CanadaInstitution and transit numbers + account number
AustraliaBSB + account number
SingaporeBank and branch code + account number

IBAN and BIC on invoices

For international payments, put both the IBAN and the BIC (SWIFT code) on your invoice, along with the account holder's name as the bank knows it. Write the IBAN in groups of four so it is easy to read back, and check it here before the first invoice goes out.

Questions

How is an IBAN validated?

Move the first four characters to the end, turn letters into numbers (A = 10 to Z = 35), and divide the result by 97. A valid IBAN leaves a remainder of 1. The length must also match the country: 22 for the UK and Germany, 27 for France, 18 for the Netherlands.

Does a valid IBAN mean the account exists?

No. A valid IBAN is well-formed with correct check digits, which catches nearly all typing mistakes. It does not confirm the account is open or who holds it; your bank checks that when you pay.

Does India use IBAN?

No. Indian bank accounts are identified by an IFSC code and an account number. For payments from abroad, the sender also needs the bank's SWIFT/BIC code.

Does the US use IBAN?

No. US accounts use an ABA routing number and an account number. International payments to the US use the bank's SWIFT/BIC code and the account number.

How do I find the sort code in a UK IBAN?

In a UK IBAN, characters 5–8 are the bank code, 9–14 the sort code and 15–22 the account number. GB82 WEST 1234 5698 7654 32 has sort code 12-34-56 and account number 98765432.

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