Regional Guides
Japanese Shoe Size Conversion — cm, US, EU, UK
Japan uses centimeters for shoe sizes — a 25.0 in Japan means a 25 cm foot length. Sounds simple, but going from Japan size to US, EU, or UK trips up most overseas shoppers. Get the numbers right once and you'll never order the wrong size from Amazon.jp or Rakuten again.
Men's Japanese Shoe Sizes
| Japan (cm) | US | EU | UK | Korea (mm) |
|---|---|---|---|---|
| 24.0 | 6 | 39 | 5.5 | 240 |
| 25.0 | 7.5 | 40.5 | 6.5 | 250 |
| 25.5 | 8 | 41 | 7 | 255 |
| 26.0 | 8.5 | 42 | 7.5 | 260 |
| 26.5 | 9 | 42.5 | 8 | 265 |
| 27.0 | 9.5 | 43 | 8.5 | 270 |
| 27.5 | 10 | 44 | 9 | 275 |
| 28.0 | 10.5 | 44.5 | 9.5 | 280 |
| 28.5 | 11 | 45 | 10 | 285 |
| 29.0 | 11.5 | 45.5 | 10.5 | 290 |
| 30.0 | 12.5 | 46.5 | 11.5 | 300 |
Women's Japanese Shoe Sizes
| Japan (cm) | US | EU | UK | Korea (mm) |
|---|---|---|---|---|
| 22.0 | 5 | 35 | 2.5 | 220 |
| 22.5 | 5.5 | 35.5 | 3 | 225 |
| 23.0 | 6 | 36 | 3.5 | 230 |
| 23.5 | 6.5 | 36.5 | 4 | 235 |
| 24.0 | 7 | 37.5 | 4.5 | 240 |
| 24.5 | 7.5 | 38 | 5 | 245 |
| 25.0 | 8 | 38.5 | 5.5 | 250 |
| 25.5 | 8.5 | 39 | 6 | 255 |
| 26.0 | 9 | 40 | 6.5 | 260 |
Convert Your Size Instantly
Enter your Japanese cm size and get US, EU, UK, and Korean equivalents in one click. Handles both men's and women's automatically.
→ Shoe Size Converter
Brand Notes — Same cm, Different Fit
**Onitsuka Tiger & Asics**: True to cm. A 26.0 cm fits a 26 cm foot. These brands originated in Japan, so their sizing is the reference point.
**Mizuno**: Runs slightly narrow. Wide-footed shoppers should go up half a size or look for the **Wide** model.
**ABC-Mart house brands (Hawkins, etc.)**: Reliable cm sizing but the cushioning is tighter than Nike — feels half a size smaller after walking 30 minutes.
**Nike & Adidas Japan**: Same as their global sizing, just listed in cm. A US 9 = 27 cm in Nike regardless of country.
Frequently Asked Questions
Why does Japan use cm for shoes?
Japan adopted the metric system fully after WWII, including for clothing and shoes. cm = foot length in centimeters, making it the most intuitive system internationally.
Are Japanese shoe sizes the same as Korean?
Almost — Korea uses mm (e.g., 260), Japan uses cm (e.g., 26.0). 260 mm = 26.0 cm. Identical foot length, different unit. Direct 1:1 conversion.
How do I order from Amazon.jp without trying on?
Measure your foot length in cm from heel to longest toe while standing. Add 0.5–1.0 cm for comfort. That's your Japan size. Check the brand's return policy in case the width doesn't fit.