Sort Code to IBAN Converter

Enter a UK sort code and account number to generate a valid GB IBAN instantly. Free, no registration required.

Sort Code

Account Number

What Is a UK Sort Code?

A sort code is a 6-digit number that identifies both the bank and the specific branch where a UK account is held. It is written in three pairs separated by hyphens — for example, 20-00-00 (Barclays) or 30-00-00 (Lloyds Bank). Every UK current account and savings account has a unique combination of sort code and account number.

Sort codes are used exclusively within the UK for domestic Faster Payments and BACS transfers. For international payments — including SEPA transfers across Europe — you must provide an IBAN instead.

How to Find Your UK Sort Code

Your sort code and account number appear in several places:

Bank statement: printed at the top or bottom of each statement page
Debit card: some UK banks print the sort code on the back
Online banking: visible in account details or settings
Cheque book: the bottom row of numbers on any cheque contains sort code and account number in MICR format

UK IBAN Format Explained

A British IBAN (GB IBAN) is always 22 characters long and follows this structure:

GB kk BBBB SSSSSS AAAAAAAA

GB   — country code (United Kingdom)
kk   — 2 check digits (MOD-97 algorithm)
BBBB — 4-letter bank identifier code
SSSSS— 6-digit sort code
AAAAAAAA — 8-digit account number

Example: GB29 NWBK 6016 1331 9268 19

GB — United Kingdom
29 — check digits
NWBK — NatWest bank identifier
601613 — sort code
31926819 — account number

Why Do You Need an IBAN for UK Payments?

The UK joined the IBAN system under ISO 13616 long before Brexit. Even though the UK is no longer a SEPA member, UK IBANs are still required for:

Receiving international wire transfers (SWIFT)
Accepting payments from European SEPA countries
Cross-border payroll and supplier payments via fintech platforms
Multi-currency accounts (Wise, Revolut, Monzo) for holding GBP

Once you have generated your IBAN above, you can verify it with the ibanchecker.cash IBAN checker to confirm the bank name and format are correct before sharing it with a payment counterparty.

Last updated: June 2026