👟 Shoe Size Converter
Convert shoe sizes between US Men's, US Women's, UK, EU, and foot length in centimeters.
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Common Shoe Size Conversions
| Input | Unit | Result | Unit |
|---|---|---|---|
| 10 | US Men's | 41.5 | EU / European |
| 8 | US Women's | 38.5 | EU / European |
| 8 | UK | 10 | US Men's |
| 42 | EU / European | 10.5 | US Men's |
| 42 | EU / European | 26.5 | Foot Length (cm) |
| 26.5 | Foot Length (cm) | 42 | EU / European |
Popular Conversions
Formula Reference
Approximate conversion formulas (±0.5 size depending on brand): EU = US Men's + 31.5 • EU = US Women's + 30.5 EU = UK + 33.5 EU ≈ (foot_cm + 1.5) × 1.5 • foot_cm ≈ EU ÷ 1.5 − 1.5 Japan size = foot length in cm (same as the cm scale above)
About Shoe Size Conversions
Shoe sizing systems vary significantly between countries, making international shoe shopping genuinely confusing. The three major systems are US/Canadian (separate men's and women's scales), UK (a single unisex scale, though women's shoes are often labeled separately), and European (EU), which uses a single continuous scale for adults. Japan uses foot length in centimeters directly as the size.
The EU system is based on Paris points — units of ⅔ centimeter. EU size 42 corresponds to a foot length of approximately 26.5 cm. Converting between US and EU systems uses approximate offsets: US Men's ≈ EU minus 31.5, US Women's ≈ EU minus 30.5. These formulas are consistent enough for most brands but may vary by ±0.5 sizes depending on the manufacturer's last (the foot-shaped form used to construct the shoe).
Width is a separate dimension not captured by these size conversions. American and UK shoes commonly label width with letters (B, D, E, EE for women's, and A through EEEE for men's), while EU shoes rarely specify width explicitly and tend to be cut narrower than comparable American sizes. If you have wide feet, add a half size or seek brands that specify wide-fit options.
Frequently Asked Questions
How do I convert US shoe size to EU?
For men's shoes, add 31.5 to the US size to get EU: US Men's 10 = EU 41.5. For women's shoes, add 30.5: US Women's 8 = EU 38.5. These are approximate — half sizes and brand variations mean you should always try shoes on or check the brand's specific size chart when possible.
What is the difference between US Men's and US Women's shoe sizes?
Women's shoe sizes run about 1.5 sizes larger than men's for the same foot. A US Women's 9 is approximately equivalent to a US Men's 7.5. This matters for unisex or wide-range shoes — always check which scale is being used. Children's shoes use a different scale again (running 0–13, then continuing as adult sizes).
Are UK and US shoe sizes the same?
No. UK men's shoes are approximately 0.5 size smaller than US men's (UK 9 ≈ US Men's 10). For women's shoes, UK sizes are typically about 2 sizes smaller than US women's (UK 6 ≈ US Women's 8). Always verify the specific conversion chart since there is some inconsistency between brands and historical practices.
What does EU shoe size actually measure?
EU (European) shoe sizes are based on the Paris point, which equals ⅔ of a centimeter (about 6.67 mm). The EU size corresponds to the length of the last — the foot-shaped form used to make the shoe — in Paris points. EU 42 corresponds to a last length of 42 × 6.67 mm ≈ 280 mm, which fits a foot approximately 265 mm (26.5 cm) long.
How do I measure my foot length accurately?
Stand on a piece of paper and trace the outline of your foot. Measure from the back of the heel to the tip of the longest toe (which may not be the big toe). Add about 0.5–1 cm for comfort. Measure both feet and use the larger measurement, as feet are rarely identical. Measure in the afternoon when feet are at their largest after a day of activity.
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Sources
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Reference Library
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All conversion results are provided for general informational purposes only. Our formulas use internationally recognized conversion factors; however, rounding may affect precision. Do not rely on these results for professional, medical, legal, or engineering decisions without independent verification. Read our full disclaimer.