US to Japan Shoe Size Converter

Convert US shoe sizes to Japan instantly. Enter your US size above to see Japan and all other regional equivalents.

Converted Sizes

Conversion Guide

Use the converter above to convert any US shoe size to Japan. Results also show UK, Japan, China, and CM equivalents. Fit can vary by brand; check the brand's size chart when possible.

Understanding This Conversion

Understand how shoe sizing systems work across US, UK, EU, Japan, and CM. Educational guide with conversion references.

For more detail, read our guides on regional differences, how to measure your feet, and common sizing mistakes.

Fit Guide

Fit can vary by brand and style:

  • European brands often run slightly narrower; consider half a size up if you have wide feet.
  • US and UK sizes may offer more width options (N, M, W).
  • Asian sizing (JP/CN) typically runs smaller—sizing up is common when converting from US or Japan.

When in doubt, check the brand's size chart or order two sizes and return one.

How to Measure Your Foot

Measure your foot length in centimeters for the most accurate conversion:

  1. Place a piece of paper against a wall on a hard floor.
  2. Stand with your heel touching the wall and mark the tip of your longest toe.
  3. Measure from the wall to the mark in centimeters.
  4. Repeat for both feet and use the larger measurement.

Foot length in CM is the most reliable reference across all regional sizing systems.

Region Converters

Frequently Asked Questions

How do I convert US shoe sizes to Japan?

Use the converter above. Select your gender, choose US as the source region, enter your size, and view Japan and other regional equivalents.

Is US sizing different from Japan?

Yes. Each region uses its own scale. US and Japan conversion is approximate; always check the brand's size chart when possible.

Are shoe sizes standardized?

No. Shoe sizes vary by country and brand. Conversion charts give approximate equivalents.

Should I size up or down?

It depends on the brand. European and Asian brands often run smaller. Consider sizing up for athletic shoes or wide feet.

Related Size Conversions

Related Converters

GlobalSizeChart.com is an independent utility for size conversion. Our content is educational and our sizing data is compiled from public standards.

  • Independent Utility Tool — Free converters and charts, not affiliated with any retailer or brand.
  • No brand affiliation — We are not owned by or paid by any clothing or shoe brand.
  • Educational content — Guides and explanations are for information only; always check the brand's size chart when possible.
  • Sizing data compiled from public standards — Conversions are based on widely published international sizing standards; individual brands may differ.