Convert between US, UK, and EU shoe sizes for men and women. Includes foot length measurements.
Shoe sizing systems vary by country and there is no universal standard, which is why converting between systems can be confusing. The most common systems are US (used in the United States and Canada), UK (used in Britain, Australia, and New Zealand), EU (the European or Paris Point system), and centimeters/mondopoint (used in Japan and for international standardization). Each system measures slightly different things and uses different scales, which is why a US 10 is not the same number as a UK 10 or EU 10.
Select your current shoe size system (US, UK, EU, or cm), enter your size, and select your gender. The calculator instantly converts to all other systems. It also shows the approximate foot length in centimeters and inches, which is the most reliable way to find your size in any system. If you are between sizes, the calculator shows both options so you can choose based on whether you prefer a snugger or roomier fit.
For the most accurate sizing, measure your feet in the afternoon or evening when they are slightly swollen from the day's activity (this is the size you will be wearing shoes). Stand on a piece of paper, trace around your foot with a pen held vertically, then measure the longest distance from heel to toe in centimeters. Measure both feet and use the larger measurement, as most people have one foot slightly bigger than the other. This length in centimeters can be entered directly into the converter for the most accurate result.
Even within the same sizing system, sizes vary between brands. A US 9 in Nike may fit differently than a US 9 in Adidas, New Balance, or dress shoes. This is because brands use slightly different lasts (foot-shaped molds) and have different ideas about fit and proportions. Running shoes, for example, are typically built with more toe room than dress shoes. When buying a new brand for the first time, using your foot measurement in centimeters is more reliable than relying on your usual size number.
In the US system, men's sizes are approximately 1.5 sizes larger than women's. A women's US 9 is approximately equivalent to a men's US 7.5. In the UK system, men's and women's sizes are the same number (a UK 7 is a UK 7 regardless of gender). The EU system is also unisex, though some brands add gender-specific labels to the same EU number. This calculator handles the gender conversion automatically.
There is no universal shoe sizing standard, which is why conversion between systems is necessary. The major systems are: U.S. (used in the United States and Canada, with separate scales for men, women, and children), UK (similar numbering to U.S. men's but offset by about 0.5-1 size), EU (Continental European, using the Paris point system where each size equals 6.67mm of foot length), and CM/Mondopoint (foot length in centimeters, used in Japan, Korea, and increasingly in athletic footwear). A U.S. men's 10 corresponds approximately to UK 9.5, EU 43-44, and 28 cm.
Shoe sizes within the same system vary between manufacturers by as much as a full size. Width is an often-overlooked dimension: standard width is D for men and B for women, with narrow (B/AA for men, AA for women) and wide (EE/EEE for men, D/EE for women) options available from many manufacturers. About 70% of people have feet of slightly different sizes; fitting the larger foot and using insoles for the smaller foot prevents discomfort and foot problems.