NatWest IBAN calculator
NatWest IBANs start with GB, two check digits and NWBK, followed by your six-digit sort code and eight-digit account number. Enter your sort code and account number to get your IBAN, built in your browser; this calculator is not affiliated with NatWest.
Calculate your NatWest IBAN
NatWest’s SWIFT address is NWBKGB2L, so its IBANs carry NWBK, followed by your sort code and account number. The SWIFT IBAN registry’s UK example, GB29 NWBK 6016 1331 9268 19, has the same layout.
Holyheld is not affiliated with NatWest. Your bank’s app or statement shows your IBAN too; if it differs from the one built here, use your bank’s.
Already have an IBAN? Check it in the IBAN checker.
NatWest IBAN format
| Detail | Value |
|---|---|
| IBAN length | 22 characters |
| Starts with | GBkk NWBK |
| Bank code in the IBAN | NWBK |
| BIC | NWBKGB2L |
| Sort code | Your six-digit sort code |
| Printed format | GBkk NWBK ssss sscc cccc cc |
| Source | “Our SWIFT address - NWBKGB2L” (natwest.com, checked 27 October 2026) |
Frequently asked questions
22 characters: GB, two check digits, the bank code NWBK, then your six-digit sort code and eight-digit account number. Printed in groups of four, it reads GBkk NWBK ssss sscc cccc cc.
No. Holyheld is not affiliated with NatWest. The calculator applies the published the United Kingdom IBAN format with NatWest’s bank code NWBK, taken from NatWest’s own website. It runs in your browser and sends nothing to a server.
In your NatWest app, online banking or statements, which usually show the IBAN itself as well. If the IBAN your bank shows differs from the one built here, use your bank’s.
Paying an IBAN from stablecoins? Holyheld Business converts USDC to EUR and pays it out by SEPA. See pricing or the guide to off-ramping USDC to an IBAN.