Shoe Size Converter
Convert shoe sizes between US men’s, US women’s, UK, EU and Mondopoint, or find your size from your foot length in inches or centimeters.
Results
| Item | Value |
|---|
Nearby sizes
| US men | US women | UK | EU | Foot (cm) |
|---|
Quick Answer
US men's size ≈ 3 × foot length in inches − 22, and US women's is about 1 to 1.5 sizes higher. A 10.5-inch foot is about a US men's 9.5, US women's 10.5, UK 8.5 or EU 42.
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Table of Contents
- Shoe Size Converter
- Quick Answer
- Related Calculators
- How This Shoe Size Converter Works
- How to Use the Shoe Size Converter
- Core Formulas
- Key Terms
- Worked Example
- Real-Life Examples
- US Men's vs Women's Sizes
- Shoe Size Conversion Chart
- How to Measure Your Foot
- Common Mistakes to Avoid
- Frequently Asked Questions
- References & Sources
How This Shoe Size Converter Works
Choose the size system you know, US men's, US women's, UK or EU, or enter your foot length. The converter changes your size into foot length, then works out the size in every other system, rounded to the nearest half size. A chart shows the sizes just above and below yours, which helps when a brand runs large or small.
Quick explanation: each system counts from a different starting point.
- US and UK: one size is 1/3 inch (a barleycorn).
- EU: one size is 2/3 cm (a Paris point).
- Mondopoint: simply the foot length in millimeters.
How to Use the Shoe Size Converter
- Choose the size system you know, or foot length.
- Enter your size or foot length.
- Press Calculate.
- Read your size in every system.
- Check the chart and the brand's own size guide.
Core Formulas
- US men: 3 × foot length (in) − 22
- US women (standard): 3 × foot length (in) − 21
- US women (common): US men + 1.5
- UK adult: 3 × foot length (in) − 23
- EU: 1.5 × foot length (cm) + 2
These formulas come from how the systems are defined. Real shoes can differ by half a size or more between brands.
Key Terms
- Barleycorn: an old English length of 1/3 inch, one US or UK size step.
- Paris point: 2/3 of a centimeter, one EU size step.
- Mondopoint: a system that labels shoes by foot length in millimeters.
- Last: the foot-shaped form a shoe is built on, a little longer than the foot.
- Half size: a step between whole sizes, about 1/6 inch in US and UK sizes.
Worked Example
Your foot is 10.5 inches (26.7 cm) long.
- US men = 3 × 10.5 − 22 = 9.5
- UK = 3 × 10.5 − 23 = 8.5
- EU = 1.5 × 26.67 + 2 = 42.0, about 42
Real-Life Examples
- Buying from Europe: a US men's 10 is about EU 42.5.
- Women's to men's: a US women's 8 is about a US men's 7 on the standard scale, or 6.5 on the common scale.
- UK shoes: a UK 7 is about a US men's 8.
- From foot length: a 27 cm foot is about a US men's 10.
US Men's vs Women's Sizes
- Standard scale: women's is men's + 1, so a men's 9 is a women's 10.
- Common scale: many brands use men's + 1.5, so a men's 9 is a women's 10.5.
- Unisex shoes: are often labeled in men's sizes.
Shoe Size Conversion Chart
From the formulas above. Brands may differ.
| Foot length | US men | US women | UK | EU |
|---|---|---|---|---|
| 9.33 in (23.7 cm) | 6 | 7 | 5 | 37.5 |
| 9.67 in (24.6 cm) | 7 | 8 | 6 | 39 |
| 10.00 in (25.4 cm) | 8 | 9 | 7 | 40 |
| 10.33 in (26.2 cm) | 9 | 10 | 8 | 41.5 |
| 10.67 in (27.1 cm) | 10 | 11 | 9 | 42.5 |
| 11.00 in (27.9 cm) | 11 | 12 | 10 | 44 |
| 11.33 in (28.8 cm) | 12 | 13 | 11 | 45 |
| 11.67 in (29.6 cm) | 13 | 14 | 12 | 46.5 |
| 12.00 in (30.5 cm) | 14 | 15 | 13 | 47.5 |
| 12.33 in (31.3 cm) | 15 | 16 | 14 | 49 |
| 12.67 in (32.2 cm) | 16 | 17 | 15 | 50.5 |
| 13.00 in (33.0 cm) | 17 | 18 | 16 | 51.5 |
How to Measure Your Foot
- Stand on paper with your heel against a wall, wearing the socks you will use.
- Mark the tip of your longest toe, then measure from the wall to the mark.
- Measure both feet and use the longer one.
- Measure late in the day, when feet are slightly larger.
Common Mistakes to Avoid
- Assuming every brand matches. Always check the brand's size guide.
- Mixing men's and women's sizes. They differ by 1 to 1.5 sizes.
- Measuring without socks. Measure with the socks you plan to wear.
- Measuring only one foot. Many people's feet differ in size.
- Ignoring width. Length is only part of fit. Wide feet may need a wide size.
Frequently Asked Questions
Find your foot length from the US size, then use EU ≈ 1.5 × foot length (cm) + 2. This converter does it for you.
About an 11 on the standard scale, or 11.5 on the common scale many brands use.
About a US men's 9, since US men's sizes are about one size higher than UK.
Choose foot length, enter it in inches or cm, and read the size in each system.
Sizing is not fully standard, and brands use different lasts and charts.
A system based on foot length in millimeters, used for ski boots and in parts of Asia.
Yes. EU sizes use one scale for everyone.
Many people choose the larger size, especially for running shoes, but check reviews and the brand's advice.
No. Children's sizes use different starting points. This tool covers adult sizes.
It follows the standard formulas, but real shoes can differ by half a size or more.
About 1/6 inch (4.2 mm) in US and UK sizes.
Yes. Feet swell slightly during the day, so evening measurements are best.
References & Sources
| Source | Used For | Link |
|---|---|---|
| Wikipedia, Shoe size | How US, UK, EU and Mondopoint sizes are defined, with formulas. | https://en.wikipedia.org/wiki/Shoe_size |