International Shoe Size Converter – US, UK, EU, JP & More
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How Shoe Size Systems Compare Worldwide
Shoe sizing varies significantly across countries and regions. The US system uses a Brannock scale with half-size increments. The UK system is similar but offset by about 0.5 to 1 size for men. The European system uses the Paris point (6.67mm per size) and is unisex, making it simpler in some ways.
Asian shoe sizes (Japan, China, Korea) typically use centimeters directly based on foot length, which is the most intuitive system. Japanese sizes measure the foot in centimeters. Korean sizes are in millimeters (250 = 25.0 cm). Brazilian sizes use their own numbering that roughly parallels European sizes.
For the most accurate fit, measure your foot length in centimeters at the end of the day when your feet are largest. Stand with your full weight on the foot being measured. Remember that sizes can vary between brands and even between shoe styles within the same brand.
Frequently Asked Questions
How do I measure my shoe size at home?
Place your foot on a piece of paper, trace around it, and measure the length from heel to longest toe in centimeters. Use the conversion table to find your size. Measure both feet and use the larger measurement. Measure at the end of the day when feet are slightly swollen.
What is the difference between US and UK shoe sizes?
US men's sizes are typically 0.5-1 size larger than UK sizes (US 10 = UK 9.5). US women's sizes are about 2 sizes larger than UK sizes (US 8 = UK 6). Children's sizes are similar.
How do European shoe sizes compare to US sizes?
European sizes use the Paris point system where each size equals 6.67mm. A US men's 10 is approximately EU 43, and a US women's 8 is approximately EU 39. EU sizes are unisex.
Do shoe sizes vary between brands?
Yes, shoe sizes can vary significantly between manufacturers because there is no universal standard enforced across the industry. Each brand uses different lasts (foot-shaped molds), width assumptions, and measurement methods. Nike shoes tend to run slightly narrow, while New Balance offers wider fits. Always consult brand-specific size charts for online purchases and measure your foot in centimeters for the most reliable starting point.
What is the Mondopoint sizing system?
Mondopoint is an international shoe sizing standard (ISO 9407) that measures foot length and width in millimeters. It is the most objective system because it directly corresponds to foot measurements rather than arbitrary size numbers. Japan uses centimeters (essentially Mondopoint divided by 10), Korea uses millimeters, and the system is also used for military footwear, ski boots, and safety shoes worldwide. A Mondopoint size of 280 means the shoe fits a foot 280mm (28.0 cm) long.
Should I buy shoes a half size up or down if between sizes?
Generally, size up rather than down. Shoes that are too small cause blisters, bunions, and ingrown toenails, while slightly larger shoes can be made to fit better with insoles or thicker socks. Athletic shoes should have about a thumb's width (roughly half an inch) of space between your longest toe and the front of the shoe. Feet swell during the day and during physical activity, so measure your feet in the afternoon or evening for the most accurate sizing.