Shoe Size Calculator
Convert foot length measurements to shoe sizes for men, women, and children. Supports US, UK, EU, and international sizing systems.
Accurate shoe size conversions for online shopping, school projects, and international travel. Eliminates guesswork in shoe fitting.
Size Converter
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Shoe Size Conversion
Converting foot length measurements to shoe sizes is essential for getting the right fit. Different countries and brands use different sizing systems, which can make shopping confusing. This calculator helps you find the correct size across multiple standards.
The key is measuring your foot length accurately. Place your foot on a piece of paper, trace the outline, and measure from heel to longest toe. Add a little extra for socks and comfort.
How Shoe Sizing Works
Shoe sizes are based on foot length, but each sizing system uses different starting points and increments. The US system is most common, with men's and women's sizes differing by about 1.5 sizes.
The basic US men's formula is:
Calculate US men's shoe size from foot length
US women's sizes are typically 1.5 sizes larger:
Women's sizes are offset from men's
UK sizes use a similar but slightly different formula:
UK sizes are generally 1 size smaller than US
EU sizes use centimeters and a different calculation:
EU sizes are based on foot length in centimeters
For reverse calculations (size to foot length):
Approximate foot length from shoe size
Common Shoe Size Conversions
Here are some standard foot length to shoe size conversions for adults:
| Foot Length (inch) | US Men | US Women | UK | EU |
|---|---|---|---|---|
| 9.0 | 5 | 6.5 | 4 | 37 |
| 9.5 | 6 | 7.5 | 5 | 38 |
| 10.0 | 7 | 8.5 | 6 | 40 |
| 10.5 | 8 | 9.5 | 7 | 41 |
| 11.0 | 9 | 10.5 | 8 | 42 |
| 11.5 | 10 | 11.5 | 9 | 44 |
| 7.0 | -1 | 0.5 | -2 | 25 |
| 7.5 | 0.5 | 2 | -0.5 | 26 |
| 8.0 | 2 | 3.5 | 1 | 28 |
| 8.5 | 3.5 | 5 | 2.5 | 29 |
| 12.0 | 11 | 12.5 | 10 | 45 |
| 12.5 | 12.5 | 14 | 11.5 | 47 |
| 13.0 | 14 | 15.5 | 13 | 48 |
| 13.5 | 15.5 | 17 | 14.5 | 50 |
| 14.0 | 17 | 18.5 | 16 | 51 |
| 6.0 | -4 | -2.5 | -5 | 20 |
| 6.5 | -2.5 | -1 | -3.5 | 22 |
| 14.5 | 18.5 | 20 | 17.5 | 53 |
| 15.0 | 20 | 21.5 | 19 | 54 |
| 15.5 | 21.5 | 23 | 20.5 | 56 |
| 16.0 | 23 | 24.5 | 22 | 57 |
| 5.0 | -7 | -5.5 | -8 | 17 |
| 5.5 | -5.5 | -4 | -6.5 | 18 |
| 4.5 | -8.5 | -7 | -9.5 | 15 |
| 4.0 | -10 | -8.5 | -11 | 14 |
| 3.5 | -11.5 | -10 | -12.5 | 12 |
Notice how the same foot length gives different sizes across systems. A 10.5-inch foot is a US men's size 8, UK size 7, and EU size 41.
For the most accurate results, measure your foot while standing with weight on both feet. Measure from the heel to the longest toe, and consider the type of socks you'll wear with the shoes.