📐 International Shoe Size Converter
Convert shoe sizes instantly across US, UK, EU, CM, and Inches systems.
| Foot Length (CM) | Foot Length (Inches) | US Size | UK Size | EU Size |
|---|
Shoe Size Converter — US, UK, EU, CM & Inches Chart for Men, Women & Kids
Finding the right shoe size across different countries can be genuinely frustrating. You order a pair online, it arrives from a UK brand, and suddenly you’re staring at a “Size 8” label wondering if that’s the same as your usual US 8.5 or something completely different. Spoiler: it’s not. UK 8 is US 8.5 for men, and the gap gets even wider for women’s and kids’ sizes. If you’ve ever returned a pair of shoes because the sizing was off, you already know how costly this confusion can be.
This free international shoe size converter solves the problem in seconds. Enter your foot length in centimeters, or type in the size you already know from any system US, UK, EU, CM, or Inches and get the equivalent across all other systems instantly. It covers Men/Unisex, Women, and Kids sizing, because the conversion formulas are different for each category.
Why Shoe Sizes Differ Around the World
Shoe sizing has no single global standard. Different countries developed their own systems independently, and those systems use different base measurements and different incremental steps. Here’s a quick breakdown:
The US system is the most familiar to American shoppers. Men’s and women’s sizes are on different scales — a women’s US 8 is not the same foot length as a men’s US 8.
The UK system runs about half a size smaller than US men’s sizes. UK 8 = US 8.5 for men. For women, the gap is typically 2 full sizes UK 6 = US 8.
The EU (European) system is based on the Paris Point, where each size increment equals two-thirds of a centimeter. EU sizes are the same for men and women, which makes them slightly easier to work with internationally.
The CM system is simply the length of your foot in centimeters, measured from the heel to the tip of your longest toe. This is the most accurate input because it eliminates brand variation and regional differences entirely.
Inches is the same as CM but for shoppers who measure in imperial just multiply your foot length in inches by 2.54 to get centimeters.
How to Measure Your Foot at Home (The Right Way)
Before you use any shoe size converter, you need an accurate foot measurement. Here’s how to do it properly:
Place a blank sheet of paper on a hard floor. Stand on it with your full weight on that foot don’t measure while sitting, because your foot spreads slightly when you stand. Trace around your foot with a pencil held vertical (not angled). Measure the longest distance from heel to toe in centimeters. Add 0.5 to 1 cm for clearance shoes that fit exactly on a measuring tape will feel tight after a full day of walking.
Do this for both feet. Most people have one foot slightly longer than the other. Always size for the larger foot.
The best time to measure is in the late afternoon or evening, when your feet are at their largest after a day of activity.
Men’s Shoe Size Conversion Chart — US, UK, EU, CM
This chart covers the most common men’s and unisex sizes:
| Foot Length (CM) | Foot Length (Inches) | US Size | UK Size | EU Size |
|---|---|---|---|---|
| 24.0 cm | 9.45″ | 6 | 5.5 | 38.5 |
| 24.5 cm | 9.65″ | 6.5 | 6 | 39 |
| 25.0 cm | 9.84″ | 7 | 6.5 | 40 |
| 25.5 cm | 10.04″ | 7.5 | 7 | 40.5 |
| 26.0 cm | 10.24″ | 8 | 7.5 | 41 |
| 26.5 cm | 10.43″ | 8.5 | 8 | 42 |
| 27.0 cm | 10.63″ | 9 | 8.5 | 42.5 |
| 27.5 cm | 10.83″ | 9.5 | 9 | 43 |
| 28.0 cm | 11.02″ | 10 | 9.5 | 44 |
| 28.5 cm | 11.22″ | 10.5 | 10 | 44.5 |
| 29.0 cm | 11.42″ | 11 | 10.5 | 45 |
| 29.5 cm | 11.61″ | 11.5 | 11 | 45.5 |
| 30.0 cm | 11.81″ | 12 | 11.5 | 46 |
For sizes outside this range, use the converter tool above — it handles everything from children’s sizes up to US 16 and EU 52.
Women’s Shoe Size Conversion Chart — US, UK, EU, CM
Women’s sizing uses a different scale than men’s. A women’s US 8 corresponds to roughly 25.4 cm foot length, while a men’s US 8 is closer to 26.0 cm. Always use the correct category in the converter for accurate results.
| Foot Length (CM) | US Women’s | UK Women’s | EU Size |
|---|---|---|---|
| 22.0 cm | 5 | 3 | 35 |
| 22.5 cm | 5.5 | 3.5 | 35.5 |
| 23.0 cm | 6 | 4 | 36 |
| 23.5 cm | 6.5 | 4.5 | 37 |
| 24.0 cm | 7 | 5 | 37.5 |
| 24.5 cm | 7.5 | 5.5 | 38 |
| 25.0 cm | 8 | 6 | 38.5 |
| 25.5 cm | 8.5 | 6.5 | 39 |
| 26.0 cm | 9 | 7 | 40 |
| 26.5 cm | 9.5 | 7.5 | 40.5 |
| 27.0 cm | 10 | 8 | 41 |
| 27.5 cm | 10.5 | 8.5 | 42 |
| 28.0 cm | 11 | 9 | 42.5 |
Kids’ Shoe Size Conversion Chart — US, UK, EU, CM
Children’s feet grow fast sometimes half a size in just a few months. For kids, it’s especially important to measure regularly and never size down. A shoe that’s too tight can affect foot development. Always leave at least 1 cm of room beyond the longest toe for growing feet.
| Foot Length (CM) | US Kids | UK Kids | EU Size |
|---|---|---|---|
| 14.0 cm | 8C | 7 | 24 |
| 15.0 cm | 9C | 8 | 26 |
| 16.0 cm | 10C | 9 | 27 |
| 17.0 cm | 11C | 10 | 28 |
| 18.0 cm | 12C | 11 | 30 |
| 19.0 cm | 13C | 12 | 31 |
| 20.0 cm | 1Y | 13 | 32 |
| 21.0 cm | 2Y | 1 | 33 |
| 22.0 cm | 3Y | 2 | 34 |
| 23.0 cm | 4Y | 3 | 36 |
Common Shoe Size Conversion Questions
EU 42 is US 8.5 for men and US 10.5 for women. The foot length for EU 42 is approximately 26.5 cm or 10.43 inches.
UK 8 = US 8.5 for men. For women, UK 8 = US 10.
For men: US 8, UK 7.5, EU 41. For women: US 9, UK 7, EU 40.
Yes EU sizing is based purely on foot length, so EU 38 represents the same foot measurement regardless of gender. However, the corresponding US and UK sizes will be different depending on whether you’re shopping in the men’s or women’s section.
Even within the same size system, brands use different lasts (the foot-shaped mold the shoe is built around). A Nike US 9 and a New Balance US 9 may fit differently even though they’re the same numeric size. This is why measuring your foot in centimeters is the most reliable approach it’s a fixed number that doesn’t change between brands.
For adults, 0.5 to 1 cm of extra space beyond your longest toe is the recommended clearance. This accounts for foot swelling during the day and natural movement when walking. For running shoes, many people prefer up to 1.5 cm of extra space.
How to Use This Shoe Size Converter
Using the tool is straightforward:
- Select your category: Men/Unisex, Women, or Kids. This changes the conversion formula.
- Adjust the foot length slider: drag to your foot measurement in centimeters, or type it directly.
- Or type in any size: enter a US, UK, EU, CM, or Inches size and all other values update instantly.
- Read your sizes: the result card shows your equivalent size across all five systems at once.
- Check the chart below: the full sizing matrix is visible for quick reference without entering anything.
No signup, no download, no fees. The tool works on mobile, tablet, and desktop equally well useful when you’re shopping in a store in another country and need a quick size check on your phone.
Tips for Buying Shoes Online Internationally
Shopping for shoes on international websites like ASOS (UK), Zalando (EU), or Amazon from different regional stores comes with sizing risks. Here’s how to avoid getting it wrong:
Always check the brand’s own size guide first many brands publish a size-to-centimeter table specific to their products. Use your foot measurement in CM as your starting point rather than converting from a US or UK size. Read recent reviews and check if buyers mention the shoe running large or small. When in doubt between two sizes, order the larger one it’s easier to add a thin insole than to stretch a shoe that’s too tight.
For expensive shoes or limited editions, consider ordering from a retailer with free returns so you can try both sizes at home.
Why CM Is the Most Reliable Size System
Every regional shoe size system has quirks and inconsistencies, but centimeters never lie. Your foot is 26.5 cm long regardless of whether you’re in New York, London, Berlin, or Tokyo. This is why this converter always shows the CM value prominently it’s your anchor measurement.
If you remember nothing else from this page, remember this: measure your foot in centimeters once, write it down, and use that number every time you shop for shoes internationally. It will save you more time and money than any size chart ever could.
Shoe size data sourced from international sizing standards. Brand variations of up to 1 full size are normal — always measure your foot for the most accurate result.