Japan to US Women Converter

Japanese shoe sizes (also used in Korea) directly represent foot length in millimeters — JP 260 means a 26 cm foot, JP 270 means 27 cm. This makes the Japanese system the simplest and most intuitive, as the size number directly equals the foot measurement. Japanese sizes range typically from 230 (women's) to 290 (men's large).

US Women's shoe sizes run approximately 1.5 sizes larger in number than US Men's for the same foot length, with US Women's 9 corresponding to about 25.4 cm foot length. This offset often causes confusion when shopping for unisex or athletic shoes. US Women's 9 ≈ US Men's 7.5 ≈ EU 40 ≈ UK 6.5.