Shoe Size Converter: US, UK, EU & JP
US, UK, EU, JP — shoe sizing is a mess of competing systems, and guessing wrong means the familiar pain of international returns. A US men’s 9 is a UK 8.5, an EU 42.5, and 27 cm in Japan. Who memorized that?
This free converter does it instantly. Enter your size and your current system — half sizes included — and get your size in all five systems plus your foot length in centimeters. Below your result you’ll find top-rated shoes in your converted size on Amazon.
Convert Your Shoe Size
Shopping international brands or marketplaces? Convert between US, UK, EU, and Japanese sizing in one tap — half sizes included.
Your size everywhere
| System | Size |
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Conversions are standard industry tables, but sizing varies between brands — always check the brand’s own chart for dress shoes and performance footwear. When between sizes, size up.
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Frequently asked questions
How do US men’s and women’s shoe sizes relate?
US women’s sizes run 1.5 larger than men’s for the same foot — so a US men’s 9 equals a US women’s 10.5. Our converter handles this automatically.
Are UK and US shoe sizes the same?
No — UK sizes run about half a size smaller than US men’s (a US men’s 9 is a UK 8.5). Treat the conversion as a strong starting point and check the brand’s own chart for expensive pairs.
What does JP sizing mean?
Japanese sizing is just your foot length in centimeters. A JP 27 means a 27 cm foot — the most reliable system for comparing across brands.
Why do sizes vary between brands?
Lasts (the foot-shaped forms shoes are built on) differ by brand, and so do materials and intended fit. Conversions get you to the right neighborhood; the brand’s size chart gets you to the right house.
Should I size up or down if I’m between sizes?
Size up. Feet swell during the day, and a slightly roomy shoe with an insole beats a tight shoe every time.