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US to EU Shoe Size Converter

Enter your US shoe size to see the EU equivalent plus UK and CM conversions.

The US to EU Size System, Explained

European shoe sizing is based on the Paris Point system, developed by French shoemakers in the 19th century. Each full EU size represents two-thirds of a centimetre of last length — a completely different base unit from the American system, which comes from the Brannock Device, invented in 1925 and measured in thirds of an inch. That's the real reason US and EU numbers never convert with a clean, round formula.

One number, two genders

EU sizes use a single numbering scale for men's and women's shoes, unlike the US, which runs separate men's and women's charts for the same shoe. That means an EU 39 corresponds to a different US size depending on whether you're checking the men's or women's conversion chart — a common source of confusion when a European retailer's size guide doesn't specify which chart it's using.

European brands often fit narrower

Beyond the raw size conversion, a lot of European-made sneakers and dress shoes use a narrower last through the midfoot than American brands are built around. If you have a wider foot, it's worth treating the size conversion as a starting point and sizing up half a size on European brands specifically, rather than assuming the converted number will fit exactly the way your usual US brand does.

Buying from European retailers

Sites like Zalando and many brands' own .eu stores list EU sizing by default, sometimes with a US or UK equivalent shown in small print and sometimes not at all. If you're ordering to the US, check whether the retailer handles returns internationally before you buy — a sizing mistake on an international order usually costs more in shipping to fix than the same mistake on a domestic one.

Kids EU sizing

EU kids sizes follow the same Paris Point logic as adult EU sizes, just starting from a much smaller base — European kids charts commonly start around EU 16 for an infant's first proper shoe and run continuously up into the adult scale, usually crossing over into adult EU numbering by the early-to-mid teens.

Sneaker Size Converter

Find your perfect fit across every sizing system, instantly. Convert between US, UK, EU, CM and Korean sizing for men, women and kids — with brand-specific fit guides for Nike, Adidas, Jordan and more.

Men's Sneaker Size Converter

Select your size system, pick your size, and every equivalent appears instantly.

I know my size in
Select your size
US—
UK—
EU—
CM—
Korean—
Enter your foot length above for a size recommendation.

⚠ Sizing varies between brands and styles. These conversions are a guide — always check the brand's own size chart before buying.

Women's Sneaker Size Converter

Select your size system, pick your size, and every equivalent appears instantly.

I know my size in
Select your size
US—
UK—
EU—
CM—
Korean—
Enter your foot length above for a size recommendation.

⚠ Sizing varies between brands and styles. These conversions are a guide — always check the brand's own size chart before buying.

Kids' Shoe Size Converter

Choose an age category, then select your size system for instant conversions across US, UK and EU.

Age category
I know my size in
Select your size
US—
UK—
EU—
CM—
Enter your child's foot length above for a size recommendation.

⚠ Kids' feet grow fast — measure regularly and always allow a little extra room. Check the brand's own chart before buying.

Sneaker Brand Size Guide

Not all sneakers fit the same. Here's how the major brands run relative to your true size — so you know before you buy. We've noted which specific models are affected and how much to adjust.

Brand Fit Adjustment Notes
Nike True to Size None needed Generally TTS across most styles. Air Force 1 fits slightly roomy. React and Pegasus running shoes can run narrow — wide-footer types should consider half a size up.
Adidas Runs Small Go ½ size up Ultraboost and NMD run about half a size small. Stan Smith and Gazelle are TTS but fit narrow — if you have wider feet, go half a size up. Yeezy sizing varies by model.
New Balance True to Size None needed TTS with excellent width options (B through 4E). Known for a comfortable, slightly roomier toe box than Nike. 990, 574 and 550 are all reliably TTS.
Jordan True to Size None needed Most Jordan models are TTS. Air Jordan 1 fits wide and roomy — narrow-foot types can size down half. Jordan 11 runs a touch large; some people prefer half a size down.
Vans Runs Large Go ½ size down Old Skool and Sk8-Hi run slightly long — go half a size down if between sizes. Canvas styles stretch a little with wear. Slip-ons tend to feel roomy, so size down more confidently.
Converse Runs Very Large Go 1–1.5 sizes down Chuck Taylors are famous for running big. Men should go 1 to 1.5 sizes down. Women should go down 2 full sizes (they use unisex sizing). The roomy toe box gets roomier as the canvas breaks in.
Puma True to Size None needed Suede Classic and RS models are reliably TTS. Puma fits slightly narrow across most styles — wider feet may prefer to go half a size up for comfort on longer wear days.
Reebok True to Size None needed Classic Leather and Club C are TTS. Reebok generally fits well across widths. Instapump Fury runs slightly narrow. Classics tend to have a slightly roomier toe box than running styles.

Fit notes reflect general fit across popular models and community feedback. Individual styles may vary. Always check the specific product page for fit recommendations before purchasing.

Sneaker Sizing — Frequently Asked Questions

How do I convert US shoe sizes to EU? +
To convert US men's sizes to EU, add roughly 33 to your US size — so a US 10 is approximately EU 44. For women, add about 31 to your US size, so a US 8 is around EU 38.5. The easiest approach is to use the converter above, which gives you the exact EU equivalent for your size instantly.
What is my shoe size in CM? +
Your shoe size in CM refers to the length of your foot in centimetres. You can measure it by standing on a piece of paper, tracing around your foot and measuring from heel to the tip of your longest toe. A US men's 10 is approximately 28cm, and a US women's 8 is approximately 25cm. Use the foot length helper in the converter above for an instant size recommendation.
Do Nike shoes run true to size? +
Nike shoes generally run true to size, but fit can vary by model. Running shoes like the Pegasus and React Infinity tend to be accurate to your normal size, while lifestyle styles like the Air Force 1 can feel slightly roomy. If you're between sizes in Nike, most people are comfortable going half a size down.
What is the difference between men's and women's shoe sizing? +
Men's and women's shoe sizes use different numbering systems even though they can refer to the same foot lengths. A women's US 8 is roughly equivalent to a men's US 6.5 — women's sizes run about 1.5 sizes larger than men's for the same foot. Women's shoes are also typically made on a narrower last, which matters when buying unisex or crossover styles.
How do I convert kids' shoe sizes to adult sizes? +
Big kids' sizes (Y) run up to a US 7Y, which is close to a US 7 in women's or a US 5.5 in men's. Kids' sizes and adult women's sizes overlap closely — a kids' 5Y is roughly a women's US 6.5. If you have wide feet, adult sizing is usually a better option since it comes in more width choices than kids' shoes.
What shoe size is EU 42 in US? +
EU 42 is a US men's 8.5 or a US women's 11, depending on the gender sizing chart you're using. EU sizes use the same number across men's and women's but the equivalent US size differs between the two. Use the converter above to check both conversions instantly.
Do Converse run big or small? +
Converse sneakers are well known for running big — most people go 1 to 1.5 sizes down from their usual size. The classic Chuck Taylor has a roomy toe box and uses unisex sizing, so women typically need to go down 2 full sizes compared to their normal women's size. If you're a US men's 10 in most brands, start with a Converse 9.

Frequently Asked Questions

What is US 10 in EU?

US Men's 10 converts to EU 44. US Women's 10 converts to approximately EU 41, since EU sizing uses one scale that shifts differently depending on which gender chart you check.

What is US 8 in EU?

US Men's 8 converts to EU 41. US Women's 8 converts to approximately EU 39.

Why are US and EU sizes different?

US sizing is based on the Brannock Device, measuring in thirds of an inch, while EU sizing uses the French Paris Point system, measuring in two-thirds of a centimetre. Because they're built from two different base units, there's no clean round-number formula between them.

Is EU 43 a US 10?

EU 43 is typically a US Men's 9.5, not a 10 — US Men's 10 is EU 44. It's a common one-size mix-up, so it's worth double-checking on the exact listing rather than rounding.

Do European brands fit differently to US brands at the same size?

Often yes — many European-made shoes use a narrower last through the midfoot than American brands are built around, even once the size number has been converted correctly. If you have a wider foot, sizing up half a size on a European brand is a safer default than trusting the raw conversion alone.

Does EU kids sizing use the same system as adult EU sizing?

Yes — EU kids sizes follow the same Paris Point measurement as adult EU sizes, just starting from a smaller base, typically around EU 16 for an infant's first shoe. The scale runs continuously into adult EU numbering by the early-to-mid teens, so there's no separate conversion step needed.