Shoe Size Calculator
Convert foot length (in centimeters or inches) to US Men's, US Women's, UK, EU, and JP shoe sizes using standard international conversion tables.
About this Calculator
Convert foot length (in centimeters or inches) to US Men's, US Women's, UK, EU, and JP shoe sizes using standard international conversion tables.
Formula & Calculations
Formula
US Men = 3 × inches − 22; US Women = 3 × inches − 20.5; UK = 3 × inches − 23; EU = 1.5 × (cm + 1.5); JP = cmWhere:
- cm=Foot length in centimeters
- inches=Foot length converted to inches (cm ÷ 2.54)
- US Men=United States men's shoe size
- US Women=United States women's shoe size
- UK=United Kingdom shoe size
- EU=European shoe size (Paris point system)
- JP=Japanese shoe size (Mondopoint system, equals cm)
Assumptions
- Conversions are based on standard ISO sizing tables and may vary slightly between manufacturers.
- US Women's is typically 1.5 sizes larger than US Men's for the same foot length.
- EU sizes use the Paris point system where 1 point = 2/3 cm.
- JP sizes are the foot length in centimeters (Mondopoint).
- Results are rounded to the nearest common half-size increment.
Calculation Examples
Example 1
inches = 25.4 / 2.54 = 10. US Men = 3 × 10 − 22 = 8. US Women = 3 × 10 − 20.5 = 9.5.
Example 2
inches = 22.86 / 2.54 = 9. US Men = 3 × 9 − 22 = 5.
Frequently Asked Questions
Why do shoe sizes vary between brands?
While international standards exist, each manufacturer uses slightly different lasts (shoe molds) and may add varying amounts of toe room. These conversion formulas provide a baseline; always try shoes on or check brand-specific size guides when possible.
Should I measure my foot in centimeters or inches?
Measuring in centimeters generally gives more precise results since many international sizing systems (EU, JP) are directly based on centimeters. The calculator accepts both units and converts internally.