Shoe Size Converter
Shoe Size Converter
Convert shoe sizes between US, EU, UK, and CM systems
Size Converter
Half sizes are rounded to the nearest 0.5
Converted Sizes
Reference Table
| US | EU | UK | CM | AU (UK) | JP (CM) | CN (CM) | MX (CM) | BR |
|---|---|---|---|---|---|---|---|---|
| 4 | 36.5 | 3.5 | 22 | 3.5 | 22 | 220 | 22 | 35 |
| 4.5 | 37 | 4 | 22.5 | 4 | 22.5 | 225 | 22.5 | 35.5 |
| 5 | 37.5 | 4.5 | 23 | 4.5 | 23 | 230 | 23 | 36 |
| 5.5 | 38 | 5 | 23.5 | 5 | 23.5 | 235 | 23.5 | 36.5 |
| 6 | 39 | 5.5 | 24 | 5.5 | 24 | 240 | 24 | 37 |
| 6.5 | 39.5 | 6 | 24.5 | 6 | 24.5 | 245 | 24.5 | 38 |
| 7 | 40 | 6.5 | 25 | 6.5 | 25 | 250 | 25 | 39 |
| 7.5 | 40.5 | 7 | 25.5 | 7 | 25.5 | 255 | 25.5 | 39.5 |
| 8 | 41 | 7.5 | 26 | 7.5 | 26 | 260 | 26 | 40 |
| 8.5 | 42 | 8 | 26.5 | 8 | 26.5 | 265 | 26.5 | 40.5 |
| 9 | 42.5 | 8.5 | 27 | 8.5 | 27 | 270 | 27 | 41 |
| 9.5 | 43 | 9 | 27.5 | 9 | 27.5 | 275 | 27.5 | 41.5 |
| 10 | 44 | 9.5 | 28 | 9.5 | 28 | 280 | 28 | 42 |
| 10.5 | 44.5 | 10 | 28.5 | 10 | 28.5 | 285 | 28.5 | 42.5 |
| 11 | 45 | 10.5 | 29 | 10.5 | 29 | 290 | 29 | 43 |
| 11.5 | 45.5 | 11 | 29.5 | 11 | 29.5 | 295 | 29.5 | 43.5 |
| 12 | 46 | 11.5 | 30 | 11.5 | 30 | 300 | 30 | 44 |
| 13 | 47.5 | 12.5 | 31 | 12.5 | 31 | 310 | 31 | 45 |
| 14 | 48.5 | 13.5 | 32 | 13.5 | 32 | 320 | 32 | 46 |
| 15 | 49.5 | 14.5 | 33 | 14.5 | 33 | 330 | 33 | 47 |
Frequently Asked Questions
🦶 How to Measure Your Feet
1. Trace Your Foot
The most accurate method for home measurement:
- Place a piece of paper on the floor against a wall.
- Stand on the paper with your heel against the wall.
- Hold a pen vertically (90°) and trace your foot outline.
2. Measure Length & Width
- Use a ruler to measure the length from the heel line to your longest toe mark.
- Measure the width at the widest part of your foot trace.
- Pro Tip: Subtract 0.2 inches (5mm) from length to account for the pencil width.
👟 Fit Check: The Thumb Test
Is it the right size?
- There should be about a thumb's width of space between your longest toe and the end of the shoe.
- The heel should fit snugly without slipping.
- The widest part of your foot should align with the widest part of the shoe.
More Shoe Size Tools
Explore related conversion tools to find exactly what you need
US to UK Shoe Size
Convert US shoe sizes to UK
US to EU Shoe Size
Convert US shoe sizes to EU
US to CM Shoe Size
Convert US shoe sizes to CM/JP
EU to UK Shoe Size
Convert EU shoe sizes to UK
CM to US Shoe Size
Convert CM/JP shoe sizes to US
CM to EU Shoe Size
Convert CM/JP shoe sizes to EU
CM to UK Shoe Size
Convert CM/JP shoe sizes to UK
Men's to Women's Shoe Size
Convert between men's and women's sizes
Shoe Brand Size Chart
Brand-specific sizing for Nike, Adidas, and more
The Definitive Guide to International Shoe Size Conversion
Finding the perfect pair of shoes should be exciting, not a mathematical challenge. Whether you're shopping for the latest sneakers in New York, designer heels in Paris, or artisanal boots in London, understanding international shoe sizing is critical. Our Shoe Size Converter is designed to provide the most accurate translations between US, UK, EU, and CM (Mondopoint) systems.
👟 Why Do Sizes Differ?
Different regions use different mathematical origins for their sizing. The UK and US systems are based on an ancient unit called a "barleycorn" (1/3 of an inch), while the European system (Paris Point) is based on centimeters (2/3 of a cm per size). Because of these varying foundations, a simple one-to-one conversion isn't always possible, often resulting in "half-sizes" or slight discrepancies.
🚀 Pro Tip: Measure in CM
If you want the most accurate fit across all brands, always refer to the CM (Centimeter) or Mondopoint measurement. Foot length remains constant regardless of the branding system used. Most high-performance athletic brands (Nike, Adidas, Brooks) print the CM measurement on the shoe tongue label.
Understanding Regional Systems
| System | Base Unit | Common Regions |
|---|---|---|
| US / Canada | Barleycorns (1/3 inch) | USA, Canada, Australia (Men) |
| UK / Commonwealth | Barleycorns (1/3 inch) | United Kingdom, Australia (Women), India, New Zealand |
| EU / European | Paris Point (2/3 cm) | Most of Europe, Brazil, China (Adults) |
| CM / Mondopoint | Millimeters / Centimeters | Japan, South Korea, Performance Footwear |
Common Conversion Gaps & Mistakes
One of the most frequent mistakes shoppers make is assuming that UK and US sizes are the same. For men's shoes, the US size is typically one full size larger than the UK size (e.g., US 10 = UK 9). For women, the gap is often even wider, sometimes reaching two full sizes.
Another complexity is Gender Conversion. In the US, a men's size 8 is equivalent to a women's size 9.5. However, in the European system, sizing is often unisex, meaning an EU 42 fits the same foot length regardless of whether it is packaged for men or women.
How to Measure Your Feet Accurately
Time Matters
Measure your feet in the late afternoon. Feet swell throughout the day, and you don't want shoes that only fit well in the morning.
Wear Your Socks
Wear the same socks you intend to wear with the shoes (e.g., thick wool socks for boots, thin liners for dress shoes).
Measure Both
Most people have one foot slightly larger than the other. Always buy shoes based on the size of the larger foot.
Brand-Specific Sizing Anomalies
Experience proves that a "size 10" isn't a universal truth. Brands like Nike often run small, suggesting a half-size up for most users. Conversely, Converse Chuck Taylors famously run large, with many users needing to size down by a full size.
- Nike/Adidas: Generally true to size, but Nike can be narrower.
- Dr. Martens: Typically run large and don't offer half sizes.
- Running Shoes: Always size up by 0.5 to allow for foot expansion during exercise.