Shoe Size Converter

On the standard athletic scale, women's runs 1.5 sizes higher for the same foot: a men's 10 equals a women's 11.5. This holds for Nike and Jordan; a few brands use a 1.0 offset, so check when it's close.

GS (grade school) is youth sizing, topping out at 7Y. A GS pair fits the same as the women's size 1.5 higher (7Y ≈ W8.5), is built on a similar last, and usually retails cheaper — so smaller-footed buyers can often get a hyped colorway in GS for less, which also shapes resale pricing across the size run.

Brands cut different lasts and even use different scales — Adidas UK sizing famously sits a half-size off Nike's. Width, toe box shape, and materials matter too. When buying a brand blind, match the CM (foot length) figure rather than the US number.

Effectively yes — JP sizes are the foot length in centimeters, which is why CM is the cleanest cross-brand reference. Measure your foot heel to longest toe and compare directly.