Instantly convert shoe sizes across international sizing systems. Enter your size in any system (US, UK, EU, or foot length in cm) and see the equivalent in all other systems for both men and women.
Shoe sizing is a mess. Different countries use different scales, the same nominal size differs between brands, men's and women's scales are offset within the same region, and the foot itself can change size with age, weight, pregnancy, and time of day. This converter standardizes the four most common scales — US, UK, EU, and centimeters — so you can buy international shoes online without guessing.
Enter your size in any one system and the calculator returns the equivalent in the others, separately for men's and women's scales. The conversion uses standard published tables; individual brand variation can shift fit by half a size in either direction even at the same nominal size.
The single most reliable measurement is foot length in centimeters. Trace your foot on paper while standing (full body weight loaded), measure heel to longest toe, and use that to look up the correct size in whichever scale you're shopping. Allow extra room for thicker socks, summer swelling, or wide feet.
You wear US Men's 10. Equivalent EU size: ~43.5. Some EU brands list 43 and 44; pick 44 for narrow feet (43 will be tight) or 43 for wide feet (44 will slip). Half-size differences in EU are uncommon — many EU brands offer only whole sizes.
A women's US 9 = roughly men's US 7.5. This matters when buying men's-styled or unisex sneakers — a women's size doesn't exist in those lines, so you'd order the men's 7.5 equivalent.
Use this whenever you shop online from a brand using a different sizing system, or when buying gifts where you only know one size. For in-store purchases, just try them on — the most reliable test is walking in the shoe.
A few situational notes: - Athletic shoes typically run 0.5–1 size large compared to dress shoes from the same brand - Time of day matters: feet swell roughly 5% by evening; measure or shop in the afternoon - Wide feet may need to size up half a size, OR seek out width-specific options (D = standard men's, EE = wide; B = standard women's, D = wide) - Children's sizing is its own scale (US Toddler 1–13.5, then US Youth/Big Kid 1–7), with a roughly continuous mapping into adult sizes around age 12
For ring and clothing sizing, see the ring size and dress size calculators in this category.
Find your ring size from finger circumference or diameter measurement.
Calculate your bra size from band and bust measurements.
Find your hat size from head circumference in inches or centimeters.
Find your dress size in US, UK, and EU from bust, waist, and hip measurements.
UK Size
9.5
EU Size
43.0
CM (Japan)
28.0 cm
| Sizing System | Size |
|---|---|
| US Men's | 10.0 |
| US Women's | 11.5 |
| UK | 9.5 |
| EU | 43.0 |
| CM (Japan) | 28.0 |