An important update

We have replaced the static charts from a previous version of this page with two dynamic size convertors. Our universal size convertor translates all five global sizing standards (US mens, US women’s, UK, EU/FR, and CM) across a dozen brands. You can convert a particular Nike size into other sizes, as well as convert across 11 other brands. This is the only such tool on the internet.

The second tool – which is the foot length translator – converts your actual foot length (in either centimeters or inches) into a brand size. Both these tools will not guarantee a perfect fit due to variances in footwear design and materials, but removes two layers of friction from the tedious sizing process.

A note on Nike shoe sizing

Our dynamic sizing convertors do all the heavy lifting for you, but here’s some good-to-know information on Nike sizing standards.

Most US brands, with the exception of New Balance, use a conversion factor of one size between US and UK sizes, so a US 10 converts into a UK 9. The size conversion standard for US men’s and US women’s also differs from how adidas and New Balance do it. For example, adidas US 10 mens is adidas US 11 women’s, but Nike follows a 1.5 size equivalent, meaning a Men’s US 10 equals US 11.5 women’s.

The ‘JP’ or ‘CM’ size is not to be confused with the actual foot length; both are two different things. To convert your actual foot length (in CM or inches) into brand sizes, use our universal foot length convertor. Our foot length tool uses a proprietary standard to correctly translate true CM size into brand sizes.