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Reference

Bank codes explained

IBAN, SWIFT/BIC, sort code, routing number, BSB, IFSC, NUBAN — what each one identifies, which countries use it, and a free checker for every format.

Every checker here validates structure. None of them can confirm that an account exists or belongs to the person you intend to pay.

Which code do you need?

Sending inside the US

A nine-digit routing number plus the account number. The US does not use IBANs, and an IBAN field will not accept US details.

Sending to Europe

An IBAN. Most SEPA transfers need nothing else; some banks also ask for the BIC, which is often derivable from the IBAN itself.

Sending to the UK

A six-digit sort code and an eight-digit account number domestically, or the GB IBAN for international transfers — both describe the same account.

Ready to send?

Hold multiple currencies, send and receive internationally, and pay from one account.