Japan Shoe Sizing System

Japan’s shoe sizing is primarily centimeter-based: the size is the length of the foot in cm (e.g. 24, 25, 26, 27). So a “Japan 26” is for a foot about 26 cm long. This makes Japan sizing intuitive if you know your foot length, and it converts cleanly to US, EU, and UK using standard length-based charts. This guide explains how Japan sizes work, conversion examples, width, and where to find exact conversions and tools on this site.

How Japan Shoe Sizing Works

In Japan, the most common system is foot length in cm. Sizes are usually given in whole or half centimeters (22, 22.5, 23, 23.5 … 28, 28.5, 29, 30). There is no separate men’s/women’s number scale—the same cm size means the same foot length. Typical adult ranges are about 22–26 cm for women and 24–30 cm for men, with kids starting from around 14–15 cm and going up. Some Japanese brands or import labels may also show an EU-like number; when in doubt, rely on the cm value or measure your foot and use that.

Because Japan size is literally cm, the best way to find your Japan size is to measure your foot. Use our Foot Measurement Calculator or How to Measure Your Feet and How to Measure in CM. Once you have your length in cm, you can convert to US, EU, or UK with our CM to US Shoe Size tool or the main Shoe Size Converter (select Japan or cm where available).

Japan to US, EU, and UK: Conversion Examples

Conversions are based on matching foot length in cm. Below are typical equivalents.

• Japan 24 cm → about US women’s 6–7, EU 37–38, UK 4–5; Japan 24 → US (women), Japan 24 → EU (women).
• Japan 26 cm → about US men’s 8.5–9, EU 41.5–42, UK 8; Japan 26 → US, Japan 26 → EU.
• Japan 27 cm → about US men’s 9.5–10, EU 42.5–43, UK 9; Japan 27 → US, Japan 27 → EU.
• Japan 28 cm → about US men’s 10.5–11, EU 44, UK 10; Japan 28 → US, Japan 28 → EU.

For the reverse (US or EU to Japan), use the Shoe Size Converter or programmatic pages such as US 9 → Japan, EU 42 → Japan. The Programmatic Index lists all Japan↔US, Japan↔EU, and related single-size pages.

Width in Japan Sizing

Japanese shoes often assume a relatively standard width; explicit width grading (like US B, D, E) is less common than in the US. Some brands offer “wide” or “W” in selected models. If you have wide or narrow feet, check the brand’s size chart and consider our Foot Width Calculator and Foot Width Guide to see how you compare. When converting Japan (cm) to US or EU, length is primary; fit still depends on the brand’s last.

Tools and Programmatic Pages

Use these resources for Japan conversions and related sizing:

• Shoe Size Converter — enter Japan/cm or US/EU/UK and get equivalents.
• CM to US Shoe Size — foot length in cm to US (Japan size in cm is the same as foot length).
• Foot Measurement Calculator — measure then convert.
• Programmatic Index — all single-size pages (e.g. Japan 26 → US, Japan 27 → EU, Japan → US, US → Japan).

For more context, see the Complete Global Size Chart Guide, Shoe Size Guides, and Measurement Guides.

FAQ: Japan Shoe Sizing