Shoe Size Converter
Convert shoe sizes between US, UK, EU, and CM.
| US Men | US Women | UK | EU | CM (foot length) |
|---|---|---|---|---|
| 6 | 7.5 | 5.5 | 38.5 | 24 |
| 6.5 | 8 | 6 | 39 | 24.5 |
| 7 | 8.5 | 6.5 | 40 | 25 |
| 7.5 | 9 | 7 | 40.5 | 25.5 |
| 8 | 9.5 | 7.5 | 41 | 26 |
| 8.5 | 10 | 8 | 42 | 26.5 |
| 9 | 10.5 | 8.5 | 42.5 | 27 |
| 9.5 | 11 | 9 | 43 | 27.5 |
| 10 | 11.5 | 9.5 | 44 | 28 |
| 10.5 | 12 | 10 | 44.5 | 28.5 |
| 11 | 12.5 | 10.5 | 45 | 29 |
| 11.5 | 13 | 11 | 45.5 | 29.5 |
| 12 | 13.5 | 11.5 | 46 | 30 |
| 13 | 14.5 | 12.5 | 47 | 31 |
How to use Shoe Size Converter
Select your current shoe size system
Click the dropdown menu labeled 'From' and select your current size format: US, UK, EU, or CM. The dropdown displays all four options clearly for easy selection.
Enter your shoe size in the input field
Type your exact shoe size number into the white text box next to your selected system. For example, enter '10' for US size 10 or '42' for EU size 42. Decimal sizes like 10.5 are accepted.
Choose the target size system
Click the 'To' dropdown menu and select which size format you want to convert to: US, UK, EU, or CM. The converter will instantly display the equivalent size.
View your converted shoe size
Your converted size appears immediately in the results box below the 'To' field. The tool displays exact conversions and shows size ranges for close matches across all four systems.
How to Convert Shoe Sizes Online — US, UK, EU & CM Guide (2026)
How to Convert Shoe Sizes Online
Converting shoe sizes between different regions is essential for online shopping, especially when buying from international retailers. US, UK, EU, and CM (centimeter) sizing systems use different standards, making direct conversions confusing without a reliable tool.
Why Shoe Size Conversions Matter
When shopping online, you'll encounter different shoe size systems depending on the retailer's origin. A US size 10 doesn't directly match a UK size 10—UK sizes run smaller. Similarly, EU sizes follow the Paris Point system, while CM measurements represent actual foot length. Without accurate conversions, you risk ordering shoes that don't fit, leading to returns and wasted time.
The Four Main Shoe Sizing Systems
US Sizing: The most common in North America, ranging from size 5 to 13+ for adults. US women's and men's sizes differ by approximately 1.5 sizes.
UK Sizing: Used in the United Kingdom and Ireland, UK sizes typically run 1.5 sizes smaller than US equivalents. A UK size 8.5 equals a US size 10.
EU Sizing: The European standard based on the Paris Point system, ranging from 35 to 47. EU sizing is consistent across gender lines in many cases, making it more standardized internationally.
CM (Centimeters): Direct foot length measurement from heel to toe. This is the most accurate system for custom shoes or when precision matters. Most conversions use: US size = (CM - 1.27) / 0.95.
How to Use a Shoe Size Converter
Step 1 - Select Your Current Size System: Open the converter and click the 'From' dropdown. Choose whether your shoe size is in US, UK, EU, or CM format.
Step 2 - Enter Your Shoe Size: Type your exact size number into the input field. If you wear a half size like 9.5, enter the decimal. The converter accepts all standard and half sizes.
Step 3 - Choose Your Target System: Click the 'To' dropdown and select which size format you need. Options include US, UK, EU, or CM.
Step 4 - View Your Conversion: The converter displays your converted size instantly. If conversions fall between standard sizes, the tool shows the closest match and range.
Quick Conversion Reference
- US 8 = UK 6 = EU 39 = 24.5 CM
- US 9 = UK 7 = EU 40 = 25.4 CM
- US 10 = UK 8 = EU 41 = 26.3 CM
- US 11 = UK 9 = EU 42 = 27.2 CM
- US 12 = UK 10 = EU 43 = 28.1 CM
Pro Tips for Accurate Shoe Sizing
Measure Your Foot in Centimeters: For the most accurate fit, measure your foot length from heel to toe in centimeters. This eliminates conversion errors and works for any brand globally.
Check Brand-Specific Charts: Major brands like Nike, Adidas, and Converse sometimes use custom sizing. Always verify with the retailer's size chart before ordering.
Account for Gender Differences: Men's and women's shoes differ in width and proportions. A men's size 8 doesn't fit the same as a women's size 8, even within the same system.
Order Half a Size Up for Sneakers: Athletic shoes typically run smaller than casual shoes. If between sizes, order the larger option for comfort.
Remember Regional Variations: UK sizes are about 1.5 sizes smaller than US. EU sizes add 32 to the US size (roughly): US 8 + 32 = EU 40.
Common Shoe Size Conversion Mistakes
Don't assume US and UK sizes match by number—they don't. UK size 10 is actually closer to US size 11.5. Avoid converting from approximations; use exact measurements instead. Never mix children's and adult sizing—they use completely different scales. When in doubt, convert through centimeters for maximum accuracy.
Why Online Converters Save Time and Money
Manual conversion calculations are prone to errors and take unnecessary time. A free online converter eliminates guesswork, shows multiple conversion options simultaneously, and prevents expensive returns from ordering wrong sizes. Most converters work offline and require no registration.
Converting for International Online Shopping
When buying from foreign retailers, always use their regional sizing. If the site shows EU sizes, use your converted EU size—don't assume it matches your US size. Check return policies before ordering, as international returns are costly. Screenshot or bookmark your conversions for future reference.
Conclusion
Shoe size conversions are straightforward with the right tool. Whether you're buying from American, British, European, or Asian retailers, converting between US, UK, EU, and CM systems takes seconds. Use a free online converter for instant, accurate results—no registration required. Bookmark this tool for every future shoe purchase and never buy the wrong size again.