Shoe Size Converter
Convert between US men, US women, EU, UK, and cm foot length shoe sizes instantly.
Type in any field and the others update automatically.
Type in any field — the others update instantly. Sizes are approximate and vary by manufacturer.
Shoe size conversions are based on foot length in centimeters.
Conversion formulas (approximate):
- US Men to cm: cm = 24.0 + (US_Men - 6) × 1.0
- US Women = US Men + 1.5
- UK Men = US Men - 0.5
- EU = cm × 1.5 + 2
Reference table:
| US Men | US Women | UK | EU | cm |
|---|---|---|---|---|
| 6 | 7.5 | 5.5 | 38 | 24.0 |
| 7 | 8.5 | 6.5 | 39.5 | 25.0 |
| 8 | 9.5 | 7.5 | 41 | 26.0 |
| 9 | 10.5 | 8.5 | 42.5 | 27.0 |
| 10 | 11.5 | 9.5 | 44 | 28.0 |
| 11 | 12.5 | 10.5 | 45.5 | 29.0 |
| 12 | 13.5 | 11.5 | 47 | 30.0 |
| 13 | 14.5 | 12.5 | 48.5 | 31.0 |
Note: Shoe sizes vary between manufacturers. These conversions are approximate guidelines.
Shoe sizing is one of the least standardized measurements in everyday life. The US, UK, and EU systems each started from a different reference, so the conversions here are close approximations rather than exact equivalents, and they shift again between men’s, women’s, and children’s scales.
The only system that measures the actual foot is Mondopoint, the centimeter length used on ski boots and by the military; every other scale is an indirect code. A US half-size, for the curious, is just 1/6 of an inch of length. The practical takeaway is to trust foot length over any size number. Measure your foot in centimeters, ideally late in the day when feet are at their largest, and work from that, because a “size 10” varies not only between countries but between brands and even between two styles from the same brand. Try them on when you can; a chart gets you close, but fit is what confirms it.
How we build and check this converter
This converter runs entirely in your browser, so the numbers you enter stay on your device. The math behind it is written by hand and tested against worked examples and standard references before the page goes live.
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