Shoe Size Converter
Convert shoe sizes between US, UK, EU, Japanese, and centimetre systems.
Shoe Size Converter
Choose men’s, women’s, kids’, or toddler sizing first. Shoe sizing systems vary by brand, country, and shoe type.
Half sizes are supported where common.
Estimated converted shoe size
8 UK
Men US 9 ≈ UK 8
Estimated equivalent only. Brand fit may vary.
Original size
US 9
Target size
UK 8
Category
Men
Foot length
27 cm
Inches
10.63 in
Fit confidence
Common chart equivalent
Table-based conversion
Uses common shoe size chart equivalents instead of a single oversimplified formula.
Travel and shopping friendly
Useful for international shopping, ecommerce size comparison, and travel purchases.
CM and inches included
Foot length measurements often provide more consistent fit guidance than regional labels.
Dynamic Fit Insights
How Shoe Size Conversion Works
Regional systems
US, UK, EU, and CM shoe sizes use different numbering systems and conventions.
CM / Mondopoint
CM sizing is based more directly on foot length measurements.
Estimated equivalents
Conversion charts provide approximate common equivalents rather than guaranteed exact fit.
Brand variation
Brands may adjust sizing based on width, cushioning, or shoe style.
Half sizes
Half sizes may not map perfectly between all systems, especially EU sizing.
Nearest row matching
The converter matches the entered size to the nearest common size chart row.
US, UK, EU, and CM Sizes Explained
US sizing
US shoe sizes differ between men, women, and kids.
UK sizing
UK sizes are usually lower than comparable US men’s sizes.
EU sizing
EU sizes use a separate numbering scale and often whole or half numbers.
CM / Mondopoint
CM sizing is based on approximate foot length and is often more reliable across regions.
Men’s, Women’s, and Kids’ Sizing Differences
Men vs women
Women’s US shoe sizes are usually about 1.5 sizes higher than comparable men’s US sizes.
Kids and youth
Kids’ and youth shoes use a separate sizing scale from adult sizes.
Toddler sizing
Toddler and baby shoes often use smaller ranges and different labels such as C for children.
Unisex shoes
Many unisex shoes list men’s sizing first with women’s equivalents shown separately.
Foot Length and Fit Notes
Measure correctly
Measure from your heel to your longest toe while standing.
Measure both feet
Many people have slightly different foot sizes. Use the larger foot measurement.
Allow toe room
Leave enough room for toe movement, especially for running or hiking shoes.
Width and socks matter
Sock thickness, shoe width, and cushioning can affect comfort and fit.
Different shoe types
Running, hiking, formal, and casual shoes may fit differently even in the same labeled size.
Check brand charts
Always review the brand’s own size chart when exact fit matters.
Common Shoe Size Conversion Examples
Men’s US 9
≈ UK 8
≈ EU 42
≈ 27 cm
Men’s US 10
≈ UK 9
≈ EU 43
≈ 28 cm
Women’s US 7
≈ UK 5
≈ EU 38
≈ 24 cm
Women’s US 8
≈ UK 6
≈ EU 39
≈ 25 cm
Kids’ US 4Y
≈ UK 3.5
≈ EU 36
≈ 22.5 cm
Formula / Table Explanation
- 1. Choose category: men, women, kids, or toddler.
- 2. Match the entered size to the nearest row in the conversion table.
- 3. Return the equivalent size in the selected target system.
- 4. Show CM or inches foot length when available.
- 5. Label the result as an estimated common equivalent.
Optional foot length conversions
inches = cm ÷ 2.54
cm = inches × 2.54
Shoe size conversion is mostly table-based because there is no universal formula that works perfectly for every brand or region.
Frequently Asked Questions
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