# Sort Code Checker

> Sort Code Checker: a free UK sort code checker: format validation, a general-purpose Vocalink modulus check, and bank identification, all run in your browser.

Sitemap: https://sortcodechecker.xyz/sitemap.xml

## Tools

- [Sort Code Checker](https://sortcodechecker.xyz/): Check a UK sort code's format, run a modulus check against an account number, and see which bank it belongs to.
- [UK Bank Sort Codes](https://sortcodechecker.xyz/bank-sort-codes/): Which sort code number ranges belong to which UK bank: NatWest, Barclays, HSBC, Lloyds and more.
- [How Modulus Checking Works](https://sortcodechecker.xyz/how-modulus-checking-works/): A step-by-step maths walkthrough of the Standard-11 and Double Alternate checks, using the same official worked examples the tool is tested against.

## About this site

Sort Code Checker validates the format of a UK bank sort code, runs a general-purpose modulus check (Vocalink's Standard-11 and Double-Alternate algorithms, standard weighting table) against an optional account number, and identifies which bank or building society group a sort code belongs to from a public sort-code range reference. Nothing is sent to or stored on a server; every check runs locally in your browser.

Site: https://sortcodechecker.xyz