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About This Calculator
Shoe sizing systems vary dramatically between countries, with US, UK, European, and Japanese standards each using different scales and starting points. A US men's size 10 corresponds to a UK 9.5, an EU 44, and a Japanese 28. This converter eliminates confusion when shopping internationally by mapping sizes across all major systems.
Quick Tips
- 1 US men's sizes are 1.5 sizes larger than US women's for the same foot length.
- 2 EU sizes increase by 6.67mm per size while US sizes increase by 8.46mm.
- 3 Measure feet in the evening when they are slightly swollen for best fit.
Example Calculation
Convert US men's size 10 to EU, UK, and cm.
US 10 = EU 43 = UK 9.5 = 28.0 cm foot length
How Shoe Sizes Convert Between Systems
Different regions use different sizing systems. US sizes are based on the Brannock device. EU sizes use the Paris point system (2/3 cm increments). UK sizes are similar to US but offset by about 0.5-1 size. Centimeters measure actual foot length.
Men's vs Women's Sizing
Women's US sizes are typically 1.5 sizes larger than men's for the same foot length. A women's US 9 equals a men's US 7.5. EU sizes are unisex and the same for both genders. UK sizes differ by about 0.5 between men's and women's.
Measuring Your Foot
Stand on a piece of paper and trace your foot. Measure from the heel to the longest toe in centimeters. Use this measurement to find your correct size in any system. Measure in the afternoon when feet are largest.
Tips for Buying Shoes Online
Always check the brand sizing chart, as sizes vary between manufacturers. Read reviews for sizing feedback. Order from retailers with free returns. When between sizes, go up for athletic shoes and try both for dress shoes.
Frequently Asked Questions
For men, add approximately 33 to the US size (US 10 = EU 43). For women, add approximately 31 to the US size (US 8 = EU 39). The exact conversion varies slightly, which is why this calculator provides precise results.
Yes. EU sizes are unisex. A EU 42 is the same physical size regardless of gender. The difference lies in the US and UK systems, where men's and women's sizes are offset.
For men, US sizes are approximately 0.5 to 1 size larger than UK sizes (US 10 = UK 9 to 9.5). For women, US sizes are approximately 2 sizes larger than UK sizes (US 8 = UK 6).
Conversions provide a good starting point, but sizing varies between brands and shoe styles. Always try shoes on or check brand-specific size charts. Foot length in centimeters is the most reliable cross-system measurement.