Convert between international shoe sizes for US, UK, EU, Japan, Mexico, China, and India. Calculate shoe sizes for men, women, kids, and infants based on foot length measurements.
Shoe sizing varies significantly between countries and manufacturers due to the lack of a global standard. Different measurement systems, manufacturing traditions, and sizing conventions create confusion when shopping for shoes internationally.
Our calculator provides conversions between the major international shoe sizing systems, helping you find the right fit when shopping across different countries or online retailers from around the world.
Where L = foot length in inches
Where L = foot length in inches
Where L = foot length in centimeters
| US Women | US Men | UK | EU | JP/MX (cm) | China | Length (inches) |
|---|---|---|---|---|---|---|
| 6 | 4.5 | 4 | 36 | 23 | 36 | 9.0 |
| 7 | 5.5 | 5 | 38 | 23.5 | 37 | 9.3 |
| 8 | 6.5 | 6 | 39 | 24.5 | 39 | 9.7 |
| 9 | 7.5 | 7 | 40 | 25.5 | 41 | 10.0 |
| 10 | 8.5 | 8 | 41 | 26 | 42 | 10.3 |
| 11 | 9.5 | 9 | 43 | 27 | 44 | 10.7 |
While shoe size provides a starting point, several factors impact proper fit:
Foot Width: Not all sizing systems account for width differences. Some manufacturers offer width designations (narrow, medium, wide, extra-wide).
Foot Shape: Arch height, toe shape, and overall foot contour affect how shoes fit beyond just length and width measurements.
Brand Variations: Different manufacturers use different lasts (foot-shaped forms) for shoe construction, leading to size variations even within the same sizing system.
Shoe Style: Athletic shoes, dress shoes, boots, and other styles may fit differently even in the same size due to construction and intended use.
Know Your Measurements: Measure both feet in centimeters and inches. Foot size can change over time due to age, weight changes, or medical conditions.
Check Return Policies: When shopping internationally online, ensure you can return or exchange shoes if the fit isn't right.
Read Reviews: Look for sizing feedback from other customers, especially regarding whether shoes run large, small, or true to size.
Consider Professional Fitting: For expensive shoes or if you have foot issues, consider professional fitting services that can account for width, arch, and other fit factors.