A shoe size converter matches your size across the world's main sizing systems — US (men's and women's), UK, India, EU and Japan — plus the actual foot length in centimetres. It is essential when buying shoes from an overseas website or brand, where the very same shoe can carry quite different numbers. Pick your US size above to see every equivalent at once.
How the sizes relate. UK and US sizes use the barleycorn, where one size step equals 1/3 inch (about 8.47 mm), and a US men's size sits one step above the same UK size. EU sizes use the Paris point, where one step equals 2/3 cm (about 6.67 mm). Japanese (JP) sizing is simply the foot length in centimetres. Because brands round differently and lasts vary, treat cross-system numbers as close equivalents rather than an exact formula.
Worked example. If your foot measures about 26 cm, the chart points to roughly a US men's 9, a UK 8 (and therefore an India 8), an EU 41–42 and a Japanese 26. The same length is a US women's 10.5, since women's US numbers run about 1.5 higher than men's for an equal foot length.
Where it's used. Size conversion matters most when shopping across borders — ordering trainers from a US store, boots from Europe, or comparing a UK-sized Indian brand with an EU-sized international one. When a size falls between two rows, or a brand runs narrow or wide, matching the centimetre foot length is the safest way to avoid returns.