This shoe size converter translates any size between the four major systems — US, UK, EU (French) and centimetres (CM) — separately for men and women. Pick the system you know, choose your size, and the other three update instantly. Every conversion is anchored to foot length in centimetres, the only measurement that stays constant across brands and regions.
US and UK sizes count up in thirds of an inch from a fixed starting point; EU (French) sizes use Paris points (two-thirds of a centimetre each); CM is simply the length of your foot. Because each system measures from a different zero, there is no clean multiplier — you need a lookup table, which is exactly what the converter above does. One full US size is roughly 8.5 mm (a third of an inch); a half size is about 4 mm.
The same foot length maps to different numbers in men's and women's US sizing: a women's US 8.5 is typically a men's US 7. The converter handles this automatically when you switch between Men and Women, so you always get the right equivalent in every system.
Select your current system (US, UK, EU or CM), enter your size, and the converter shows the matching value in all four systems at once. Use the brand-fit guide below the result to adjust for brands like Nike or Converse that run small or large.
Yes. Measuring your foot length in centimetres removes the guesswork of brand-specific lasts. Measure both feet (they often differ by a half size) and use the longer one.
The core table is based on the Brannock standard and ISO 9407, then cross-checked against official brand charts. Sizing still varies by model, so always confirm with the brand's own fit guide before buying.