Black Friday - best deals from 50 stores Disclaimer: Shoe size conversions are not 100% true because the brands are not aligned on their approach to shoe sizing.
We spent 250 hours researching various approaches to shoe sizing and compared 190+ brand size charts to help you convert with higher accuracy.
Shoe size converter
NOTE: This conversion is based on the average measurements across brands. Your actual size may vary depending on these factors:
- Shoe brand. Manufacturers are not aligned on how they size their shoes. That’s why you may need size 9 in Adidas and size 10 in Nike. Once you know what brand you’ll be purchasing from, we recommend checking your size using the tool below.
- Your foot measurements. One millimeter is enough to take you from one size to another. Having your exact foot length and width measured before shopping online will increase the chances of getting the accurate size.
Because there is no uniform shoe sizing standard across all manufacturers, no one can tell you precisely how one size converts to another. But the good news is that there are some common tendencies.
UK to US
The UK sizing scheme does not differentiate men’s and women’s sizes, but the US sizing does:
| Men | Women | ||||
| UK | to | US | UK | to | US |
| 9 | +1 size | 10 | 9 | + 2 sizes | 11 |
EU to US
The intervals between EU sizes are smaller than those in the US scheme. That’s why one US size may be equivalent to two or even three different EU sizes.
Knowing your exact foot length in centimeters/inches will help to determine the more accurate EU size for you:
| CM | US men | US women | EU |
|---|---|---|---|
| 26.9 | 10 | 11 | 42 |
| 27.0 | 42.5 | ||
| 27.1 | |||
| 27.2 | |||
| 27.3 | 43 | ||
| 27.4 | |||
| 27.5 | 10.5 | 11.5 | |
| 27.6 | |||
| 27.7 | 43.5 | ||
| 27.8 |
CM / Mondopoint to US
The CM marking is the most no-nonsense sizing scheme available today. Its number simply indicates the internal shoe length (or insole length) in centimeters (or millimeters):
| US | UK | EU | CM |
|---|---|---|---|
| 7 | 6 | 38.5 | 25* |
*in some cases it can be written in MM (millimeters) like 250
The CM sizing system is also referred to as Mondopoint. It was developed by the ISO (International Organization for Standardization) in the 1970s as an attempt to simplify conversions between US, UK, and EU sizes.
Because it is commonly used by manufacturers in China, Japan, and South Korea, you might as well see them presented as CN (China) or JP (Japan).
The sizes in this system have intervals of 5 mm: 22, 22.5, 23, 23.5, etc. Use the converter above to see the corresponding US, UK, and EU sizes.
CM / Mondopoint and Foot length
Some shoe brands provide Foot length alongside the CM (Mondo) sizes and Foot length is the smaller number.
As a rule, CM/Mondopoint is at least 5 mm bigger than the foot length because you need a little extra space in front of your toes to prevent rubbing and discomfort.
For example, according to Hoka's size chart, a Foot length of 254 mm equals a CM size of 26 and a US size of 9. But a Foot length of 258 mm equals a CM size of 26.5 and a US size of 9.5.
| Hoka men's shoe sizes | ||||
| Foot length (MM) | US | UK | EUR | CM (Mondo) |
| 254 | 9 | 7.5 | 41.333 | 260 |
| 258 | 9.5 | 8 | 42 | 265 |
If the brand's size chart provides both Foot length and CM (Mondo), we recommend measuring your foot length and following the Foot length number for higher accuracy.
Brand shoe size calculator
You will get a much more accurate size if you check with a specific brand’s size chart. Our tool contains data from 40+ shoe brands. Find out your size now:
