UK to US Shoe Size Calculator
Convert UK shoe sizes to US sizes accurately for men, women, and children with detailed size charts
Convert UK to US Shoe Size
Enter your UK shoe size (e.g., 8, 8.5, 9)
Men and women have different conversion formulas
Adult and children sizing may have different conversion rules
Conversion Results
Enter a UK shoe size to see the US conversion
Size Conversion Analysis
Common Conversions
Men's Sizes
UK 8 → US 9
UK 9 → US 10
UK 10 → US 11
Women's Sizes
UK 5 → US 7
UK 6 → US 8
UK 7 → US 9
Children's Sizes
UK 10 → US 11
UK 12 → US 13
UK 1 → US 2
Conversion Formulas
Men's Formula
US Size = UK Size + 1
Add 1 barleycorn to UK size
Women's Formula
US Size = UK Size + 2
Add 2 barleycorns to UK size
Children's Formula
US Size = UK Size + 1
Similar to men's sizing
Sizing Tips
Barleycorn = 1/3 inch measurement unit
Women's sizes add 2, men's add 1
Always try on shoes before buying
Brand sizing may vary from standard
Understanding UK to US Shoe Size Conversion
What is Barleycorn?
A barleycorn is an old English unit of measurement equal to exactly 1/3 of an inch (8.47 mm). Both UK and US shoe sizing systems use barleycorns as their base unit, but with different starting points.
Why Different Formulas?
- •UK sizing: foot length × 3 - 23 barleycorns
- •US men's: foot length × 3 - 22 barleycorns
- •US women's: foot length × 3 - 21 barleycorns
- •Different constants create the size differences
Conversion Method
Men: US Size = UK Size + 1
Women: US Size = UK Size + 2
- Step 1: Identify gender and age group
- Step 2: Apply appropriate formula
- Step 3: Round to nearest half size if needed
- Step 4: Consider brand-specific variations
Important: These conversions are standardized approximations. Always check brand-specific size charts when possible.