Good starting point, not gospel. Brands cut their lasts differently, so treat these as standard conversions rather than a guarantee of fit. When you can, check the size printed inside the actual shoe or the brand's own chart too.
Worldwide · shoe size data

Someone sent you shoes from the other side of the world?

A quick, friendly converter between the shoe sizing systems used around the globe — US, UK, EU, centimetres and Mondopoint — built for travellers, gift-receivers, and anyone squinting at a box that says "42" wondering what on earth that means for their feet.

Browse by who's wearing them

Men's, women's and kids' sizing don't line up the same way across regions — pick a category to see its full chart.

Where this is headed

This is the first of a small family of "what does that size actually mean" tools. Roughly how we're sequencing it:

Now — live

Shoe size conversion

180 standard size points across Men's, Women's, Boys' and Girls' charts, cross-referenced between US, UK, EU, CM and Mondopoint.

Brand-specific quirks

Notes on which brands and regions tend to run small, large, narrow or wide against the standard chart, so "convert" gets closer to "actually fits."

Later

Clothing sizing

A companion site for clothing — its own tangle of numbering systems, letter sizes and body measurements — built to help with the same real-world moment: unboxing something from another region and wanting to know what the numbers mean.