Shoe Size Converter — US, UK, EU & JP (cm)
Convert shoe sizes between US, UK, EU and JP (cm) for men and women — enter your size in one system and see the rest, with a full chart.
🔒 Runs entirely in your browser. Your input and output are never sent to a server or stored — fully private.
Sizes are approximate and vary by brand, model and last — try shoes on when you can. JP sizes are the foot length in centimetres (Mondopoint).
Full chart
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About this tool
Shopping from an overseas store often means facing an unfamiliar shoe size. This converter translates a size between the US, UK, EU and Japanese (cm) systems, with separate scales for men and women. Pick the system and gender you know, enter your size, and the equivalents appear at once. Because fit varies between brands and styles, treat the result as a reliable starting point rather than a guarantee. It all runs in your browser, so nothing you enter is uploaded.
Frequently asked questions
Why are men's and women's sizes different?
In the US and UK systems, the same number is a different physical length for men and women, so the scales are offset from each other. EU sizes and Japanese cm sizes are based on foot length and are largely unisex. Choosing the right gender matters most when converting to or from a US or UK size, which is why this tool asks.
Will the converted size fit perfectly?
Treat it as a close guide rather than a guarantee. Brands cut their shoes differently, and sizing can vary between sports shoes, dress shoes and boots from the same maker. For the best result, measure your foot length in centimetres and compare it with the brand's own size chart, using this conversion to get into the right range.
Is my size information private?
Yes. The conversion is done entirely in your browser, so the size and gender you select are processed on your own device and are never sent to a server. There is no sign-up and nothing is logged, so you can look up sizes for yourself or as a gift in complete privacy.