Shoe Size Converter
Convert US, UK, and EU shoe sizes for men.
Input sheet
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US, UK, and EU shoe sizes describe the same foot with different scales, and the gaps between them aren't intuitive. This converter maps a US men's size across all three plus an approximate foot length so you can shop confidently from any region.
How it works
US men's sizing maps to UK (US − 0.5) and to EU (≈ US + 33). Foot length uses the barleycorn rule: (US + 22) ÷ 3 inches. Brands vary, so treat EU as approximate.
From a US men's size, the conversions follow simple offsets: UK is US minus 0.5, and EU is roughly US plus 34. So a US 10 maps to a UK 9.5 and an EU 44.
Foot length uses the barleycorn rule that underlies English sizing — each size is one barleycorn (1/3 inch) apart. The estimate here is (US + 22) ÷ 3 inches, converted to centimeters for a rough fit check.
UK = US − 0.5; EU = US + 34; foot length (cm) = (US + 22) ÷ 3 × 2.54.
Worked examples
Convert a US men's size 10. → EU 44 / UK 9.5 / about 27.1 cm
EU = 10 + 34 = 44; UK = 10 − 0.5 = 9.5; foot = (10 + 22) ÷ 3 × 2.54 = 27.09 cm.
Convert a US men's size 8. → EU 42 / UK 7.5 / about 25.4 cm
EU = 8 + 34 = 42; UK = 8 − 0.5 = 7.5; foot = (8 + 22) ÷ 3 × 2.54 = 25.40 cm.
Tips & gotchas
- These mappings are for men's sizing. Women's scales differ — a women's US size is typically about 1.5 sizes above the men's number for the same shoe.
- Brands vary by up to a full size, so when in doubt order the size whose foot length matches your measured foot best.
- Measure your foot in the evening when it's slightly larger, standing with weight on it, for the most reliable length.
- Treat the EU number as a starting point. EU sizing is itself approximate and shifts between makers, especially for athletic versus dress shoes.
FAQ
Are these men's or women's sizes?
Men's. For women, US sizing runs about 1.5 sizes higher than men's for the same physical shoe, so adjust before using these offsets.
Why is the EU size only approximate?
EU sizing varies between brands and shoe types, and the linear 'US + 34' rule is a close fit rather than an exact standard. Use foot length to confirm.
How is the foot length estimated?
From the barleycorn rule behind English sizing: (US size + 22) ÷ 3 gives inches, multiplied by 2.54 for centimeters. It's an approximation of internal shoe length.
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