Shoe Size Conversion Calculator
Convert shoe sizes between US, EU, UK, Australian, Korean, and Japanese sizing systems
Enter Shoe Information
Size Conversions
Enter a shoe size or foot length to see conversions
Quick Size Reference
Women's Size Conversion
| US | UK | EU | Length (cm) |
|---|---|---|---|
| 5 | 3 | 35.5 | 22.2 |
| 6 | 4 | 36.5 | 23 |
| 7 | 5 | 37.5 | 23.8 |
| 8 | 6 | 38.5 | 24.6 |
| 9 | 7 | 39.5 | 25.4 |
| 10 | 8 | 41 | 26.2 |
Men's Size Conversion
| US | UK | EU | Length (cm) |
|---|---|---|---|
| 7 | 6 | 39.5 | 25 |
| 8 | 7 | 41 | 25.8 |
| 9 | 8 | 42.5 | 26.7 |
| 10 | 9 | 44 | 27.5 |
| 11 | 10 | 45 | 28.3 |
| 12 | 11 | 46.5 | 29.2 |
How to Use the Shoe Size Converter
Step-by-Step Guide
- Select whether you're converting for an adult or child
- Choose your known sizing system (US, UK, EU, etc.)
- Enter the shoe size you know
- View all equivalent sizes in different systems
- Alternatively, measure your foot length and enter it directly
Measurement Tips
- Measure feet in the evening when they're largest
- Measure both feet and use the larger measurement
- Stand on a piece of paper and mark heel and longest toe
- Measure the distance between marks in millimeters
- Consider width as well as length for proper fit
Shoe Size Conversion Formulas
US Sizing Formulas
US Men's = (3 × inches) - 22
US Women's = (3 × inches) - 21
US Child = (3 × inches) - 9.67
UK Sizing Formulas
UK Adult = (3 × inches) - 23
UK Child = (3 × inches) - 10
European Sizing
EU = 1.27 × (UK + 23) + 2
Asian Sizing
Korean = foot length in mm
Japanese = foot length in cm
Note: Where inches represents foot length in inches. To convert millimeters to inches: inches = millimeters ÷ 25.4
Important Considerations
Size Variations
- Manufacturing tolerances can cause variations
- Different brands may fit differently
- Shoe style affects fit (athletic vs dress shoes)
- Some countries have multiple sizing standards
- Children's sizing varies more between systems
Fitting Tips
- Always try shoes on if possible
- Consider foot width, not just length
- Account for sock thickness
- Shop for shoes in the afternoon/evening
- Check return policies when buying online
Disclaimer: These conversions are based on standard formulas and may not account for brand-specific variations. Always consult individual manufacturer size charts when possible.
Frequently Asked Questions
How do I convert US shoe size to European?
To convert US sizes to European, first convert to UK sizing, then use the EU formula. For men: EU = 1.27 × (US + 1) + 29.94. For women: EU = 1.27 × (US) + 28.67.
What's the difference between men's and women's shoe sizes?
In the US, women's sizes are typically 1.5 sizes larger than men's for the same foot length. A men's size 8 equals approximately a women's size 9.5.
Are Korean shoe sizes the same as Japanese?
No, Korean sizes are expressed in millimeters of foot length, while Japanese sizes are in centimeters. A 250mm Korean size equals 25.0cm Japanese size.
How accurate are these conversions?
These conversions use standard industry formulas and are generally accurate within ±0.5 size. However, actual fit can vary between brands and shoe styles.