In today's global marketplace, understanding international shoe sizes has become increasingly important. Whether shopping online from international retailers or exploring local stores carrying global brands, having access to accurate size conversion information can make the difference between a perfect fit and a disappointing purchase.
Table Of Contents
Understanding Shoe Size Systems
Different regions of the world use distinct measurement systems for shoe sizes:
- US and UK sizes follow an incremental numerical system
- EU sizes use a continuous numerical scale
- JP (Japanese) and CN (Chinese) sizes are based on foot length in millimeters
- Mondo sizing, commonly used in ski boots, represents the foot length in millimeters
Women's International Shoe Size Conversion Chart
| US (Women) | UK | EU | JP/CN | Foot Length (IN/CM) |
|---|---|---|---|---|
| 5 | 3 | 35 | 22/220 | 8.7/22.0 |
| 5.5 | 3.5 | 35.5 | 22.5/225 | 8.9/22.5 |
| 6 | 4 | 36 | 23/230 | 9.1/23.0 |
| 6.5 | 4.5 | 37 | 23.5/235 | 9.3/23.5 |
| 7 | 5 | 37.5 | 24/240 | 9.5/24.0 |
| 7.5 | 5.5 | 38 | 24.5/245 | 9.7/24.5 |
| 8 | 6 | 38.5 | 25/250 | 9.8/25.0 |
| 8.5 | 6.5 | 39 | 25.5/255 | 10.0/25.5 |
| 9 | 7 | 40 | 26/260 | 10.2/26.0 |
| 9.5 | 7.5 | 40.5 | 26.5/265 | 10.4/26.5 |
| 10 | 8 | 41 | 27/270 | 10.6/27.0 |
| 10.5 | 8.5 | 42 | 27.5/275 | 10.8/27.5 |
| 11 | 9 | 42.5 | 28/280 | 11.0/28.0 |
Men's International Shoe Size Conversion Chart
| US (Men) | UK | EU | JP/CN | Foot Length (IN/CM) |
|---|---|---|---|---|
| 6 | 5.5 | 38 | 24.5/245 | 9.7/24.5 |
| 6.5 | 6 | 38.5 | 25/250 | 9.8/25.0 |
| 7 | 6.5 | 39 | 25.5/255 | 10.0/25.5 |
| 7.5 | 7 | 40 | 26/260 | 10.2/26.0 |
| 8 | 7.5 | 40.5 | 26.5/265 | 10.4/26.5 |
| 8.5 | 8 | 41 | 27/270 | 10.6/27.0 |
| 9 | 8.5 | 42 | 27.5/275 | 10.8/27.5 |
| 9.5 | 9 | 42.5 | 28/280 | 11.0/28.0 |
| 10 | 9.5 | 43 | 28.5/285 | 11.2/28.5 |
| 10.5 | 10 | 44 | 29/290 | 11.4/29.0 |
| 11 | 10.5 | 44.5 | 29.5/295 | 11.6/29.5 |
| 11.5 | 11 | 45 | 30/300 | 11.8/30.0 |
| 12 | 11.5 | 46 | 30.5/305 | 12.0/30.5 |
| 12.5 | 12 | 46.5 | 31/310 | 12.2/31.0 |
| 13 | 12.5 | 47 | 31.5/315 | 12.4/31.5 |
| 13.5 | 13 | 48 | 32/320 | 12.6/32.0 |
| 14 | 13.5 | 49 | 32.5/325 | 12.8/32.5 |
| 14.5 | 14 | 50 | 33/330 | 13.0/33.0 |
| 15 | 14.5 | 51 | 33.5/335 | 13.2/33.5 |
Children's Shoe Size Charts
Toddlers' Sizes (Ages 1-4)
| US | UK | EU | Foot Length (IN/CM) |
|---|---|---|---|
| 1C | 0.5 | 16 | 3.54/9.0 |
| 2C | 1 | 17 | 3.94/10.0 |
| 3C | 2 | 18 | 4.21/10.7 |
| 4C | 3 | 19 | 4.53/11.5 |
| 5C | 4 | 20 | 4.92/12.5 |
| 6C | 5 | 21 | 5.24/13.3 |
| 7C | 6 | 22 | 5.51/14.0 |
| 8C | 7 | 23 | 5.91/15.0 |
| 9C | 8 | 24 | 6.26/15.9 |
| 10C | 9 | 25 | 6.57/16.7 |
Kids' and Youth Sizes (Ages 4-12)
| Age Group | US | UK | EU | Foot Length (IN/CM) |
|---|---|---|---|---|
| Little Kids | 11C | 10 | 28 | 6.8/17.2 |
| Little Kids | 12C | 11 | 29 | 7.1/18.1 |
| Little Kids | 13C | 12 | 30 | 7.4/18.9 |
| Big Kids/Youth | 1 | 13 | 32 | 7.9/20.1 |
| Big Kids/Youth | 1.5 | 13.5 | 32.5 | 8.1/20.5 |
| Big Kids/Youth | 2 | 1 | 33 | 8.2/20.9 |
| Big Kids/Youth | 2.5 | 1.5 | 33.5 | 8.4/21.4 |
| Big Kids/Youth | 3 | 2 | 34 | 8.6/21.8 |
| Big Kids/Youth | 3.5 | 2.5 | 34.5 | 8.7/22.2 |
| Big Kids/Youth | 4 | 3 | 35 | 8.9/22.6 |
| Big Kids/Youth | 4.5 | 3.5 | 35.5 | 9.1/23.0 |
| Big Kids/Youth | 5 | 4 | 36 | 9.2/23.4 |
| Big Kids/Youth | 5.5 | 4.5 | 36.5 | 9.4/23.8 |
| Big Kids/Youth | 6 | 5 | 37 | 9.5/24.2 |
| Big Kids/Youth | 6.5 | 5.5 | 37.5 | 9.7/24.6 |
| Big Kids/Youth | 7 | 6 | 38 | 9.8/25.0 |
| Big Kids/Youth | 7.5 | 6.5 | 38.5 | 10.0/25.4 |
| Big Kids/Youth | 8 | 7 | 39 | 10.2/25.8 |
| Big Kids/Youth | 8.5 | 7.5 | 39.5 | 10.3/26.2 |
| Big Kids/Youth | 9 | 8 | 40 | 10.5/26.6 |
Essential Tips for Perfect Shoe Fitting
Measuring Feet Correctly
- Measure feet in the evening when they are slightly swollen from daily activities
- Stand while measuring to ensure weight-bearing dimensions
- Measure both feet, as they may differ in size
- Consider the socks you plan to wear with the shoes
Understanding Chinese (CN) Sizing
Chinese shoe sizing uses two systems:
- The new national standard uses millimeter measurements (e.g., CN 240)
- The traditional system uses numbers similar to EU sizing (e.g., CN 38)
Japanese (JP) vs Chinese (CN) Sizing
While both systems measure foot length:
- JP sizes use centimeters (JP 24 = 24cm)
- CN sizes use millimeters (CN 240 = 240mm)
Brand Variations
It's important to note that sizes can vary between brands, even within the same country. Factors affecting fit include:
- Manufacturing location
- Target market
- Design style
- Material properties
- Width variations (narrow, medium, wide)
Additional Considerations
Width Measurements
Many regions also include width measurements:
- US: AA (narrow) to EE (wide)
- UK: C (narrow) to H (wide)
- EU: Typically uses numbered width scales
Special Purpose Shoes
Different types of footwear may require specific sizing considerations:
- Athletic shoes often run smaller
- Winter boots may need extra space for thick socks
- Dress shoes typically follow standard sizing
- Performance footwear may require specialized fitting
Online Shopping Tips
When purchasing shoes online:
- Read customer reviews about sizing
- Check the return policy
- Consider ordering multiple sizes
- Look for brand-specific size charts
- Account for different sock thicknesses
This comprehensive guide should help navigate the complex world of international shoe sizing. Remember that these conversions are approximate, and individual fit may vary based on foot shape, brand, and style.