靴サイズ変換ツール
Enter a Japanese (cm/JP) shoe size and choose a category to instantly convert it into US, UK, and EU sizes. Foot-length (cm) guidance included.
Japanese shoe sizes are roughly equal to foot length (cm). Adding about 0.5-1.0cm of toe allowance to your measured foot length gives a typical shoe size.
How to Use
Choose a category
Select Men, Women, or Kids. The same foot length maps to different international sizes depending on the category.
Enter the size (cm)
Enter your usual Japanese size or measured foot length (cm). You can also adjust it with the slider.
Check international sizes
US, UK, and EU sizes appear instantly. Use "Copy Results" to paste them into a shopping note.
Shoe Size Chart (Men & Women)
The values below are general conversion guides. Actual fit varies by brand and construction.
Men's
| JP (cm) | US | UK | EU |
|---|---|---|---|
| 24.5 | 6.5 | 6 | 39 |
| 25.0 | 7 | 6.5 | 40 |
| 25.5 | 7.5 | 7 | 40.5 |
| 26.0 | 8 | 7.5 | 41 |
| 26.5 | 8.5 | 8 | 42 |
| 27.0 | 9 | 8.5 | 42.5 |
| 27.5 | 9.5 | 9 | 43 |
| 28.0 | 10 | 9.5 | 44.5 |
| 28.5 | 10.5 | 10 | 45 |
| 29.0 | 11 | 10.5 | 45.5 |
Women's
| JP (cm) | US | UK | EU |
|---|---|---|---|
| 22.0 | 5 | 3 | 35 |
| 22.5 | 5.5 | 3.5 | 36 |
| 23.0 | 6 | 4 | 37 |
| 23.5 | 6.5 | 4.5 | 37.5 |
| 24.0 | 7 | 5 | 38 |
| 24.5 | 7.5 | 5.5 | 39 |
| 25.0 | 8 | 6 | 40 |
| 25.5 | 8.5 | 6.5 | 40.5 |
| 26.0 | 9 | 7 | 41 |
| 26.5 | 9.5 | 7.5 | 42 |
About Shoe Size Conversion
Shoe sizing differs by country: Japan uses cm (foot length), the US and UK use inch-based systems, and the EU uses the Paris-point system. This tool converts a Japanese size (cm) into the equivalent US, UK, and EU sizes, which is handy when shopping at overseas stores or buying import brands. All calculations run in your browser and no data is sent to any server.
Features
- 4-Region SupportConvert between Japan (cm/JP), US, UK, and EU shoe sizes at once.
- Men, Women & KidsCorrectly maps to the different international size scales for each category.
- Foot-Length GuidanceSuggests the best size from your measured foot length and explains toe allowance.
- Privacy ProtectedAll processing happens in your browser. Inputs are never sent to servers.
Use Cases
- Checking sizes on overseas stores (Amazon.com, ZARA, ASOS, etc.)
- Choosing sizes for imported sneakers and leather shoes
- Trying on and buying shoes while traveling abroad
- Tracking kids' shoe sizes as they grow
- Looking up someone's international size for a gift
FAQ
Is the Japanese size (cm) the same as foot length?
What is the difference between US, UK, and EU sizes?
Why do men and women get different results?
Will the displayed size always fit?
Is my data safe?
Feedback
Missing a feature, or getting a result that looks wrong? Let us know — we improve our tools based on your feedback.