Your size
Who
A general guideline only — shoe sizes vary by brand and last. Measure your foot length (cm) and match the foot-length column for the most reliable fit.
Conversion chart
Your row is highlighted. Click any cell to copy it.
How many centimeters is a US 9 sneaker in Japan? Will an EU 42 from an overseas shop fit? What is a UK 6 in US sizing? When you buy sneakers or dress shoes abroad, looking up each country's different sizing every time is a chore. This shoe size converter lines up men's and women's shoes across Japan (cm), US, UK, EU, and your actual foot length in centimeters in one chart. Choose men's or women's, then pick which country and notation your size is in, and the corresponding row — the set of sizes considered equivalent — is highlighted across every column so you can compare all the national notations and the foot length at a glance. Every cell can be clicked to copy, so you can paste it straight into a checkout form or a note. Japanese shoe sizes are based directly on foot length in centimeters, so the most reliable approach is to stand on a sheet of paper, measure heel-to-toe in cm, and match the foot-length column. Keep in mind that shoe fit varies by brand and last, so this chart is a general guideline only: base your final choice on your measured foot length and, when possible, on trying the same brand. Nothing you select is ever sent to a server; everything runs entirely inside your browser.
How to use
- Choose men's or women's.
- Pick the notation your size is in: Japan (cm), US, UK, or EU.
- Select the value, and the matching row is highlighted in the chart so you can compare every national notation and your foot length (cm). Click any cell to copy it.
FAQ
Is anything I select sent to a server?
No. The size lookup runs entirely inside your browser; nothing you select is uploaded, stored, or transmitted. It works fully locally.
How accurate is this conversion chart?
It is a general guideline based on each country's standard sizing only. Shoe fit varies by brand and last — the same labeled size can differ by a few millimeters between makers. For the final decision, base it on your measured foot length (cm) and, when possible, on trying the same brand.
What is a US 9 in Japanese sizes (men's)?
As a general guideline, a men's US 9 is roughly a Japanese 27.0 cm (UK 8.5, EU 43), for a foot length of about 26.6–27.0 cm. Brand variation exists, so check your measured foot length too.
How do I find my shoe size reliably?
Stand with your heel against a wall on a sheet of paper, mark the tip of your longest toe, and measure heel-to-mark (your foot length) in centimeters. Match that value to the 'Foot length' column to read off each country's size. Japanese sizes match this foot length almost exactly.
What notation are EU sizes (40, 42, 43)?
EU is the common European numeric sizing (Paris point). For men's, EU 43 is roughly Japan 27.0 cm, US 9, and UK 8.5. Because it uses a different increment from US/UK and varies by brand, use your measured foot length in cm as the final check.