Nike
MenTrue to sizeWomenRuns smallKidsTrue to size
Recommended: Size up ½
Wide-foot styles available
Shoe Size Converter
Convert any shoe size in seconds. Covers US, UK, EU, AU, JP, KR, CN, MX + width and foot length.
Convert Between Any Shoe Size System
| System | US / CA | UK | EU | AU | JP (cm) | KR (mm) | CN | MX | Foot (cm) | Foot (in) |
|---|---|---|---|---|---|---|---|---|---|---|
| Select a size above to see equivalents | ||||||||||
Sizes are approximate and may vary by brand. Check the manufacturer's size chart before buying.
Brand Fit Guide - Does It Run True to Size?
Quick-reference fit notes for popular brands. Tap a card for the full size guide or shop the brand on Amazon.
Adidas
MenTrue to sizeWomenTrue to sizeKidsTrue to sizeRecommended: True to sizeUltraboost runs slightly long
New Balance
MenRuns wideWomenRuns wideKidsRuns wideRecommended: True to sizeBest for wide feet
Converse
MenRuns largeWomenRuns largeKidsRuns largeRecommended: Size down ½Size down
Vans
MenTrue to sizeWomenTrue to sizeKidsTrue to sizeRecommended: True to sizeNarrow fit
Puma
MenTrue to sizeWomenRuns smallKidsTrue to sizeRecommended: Size up ½Women size up half
Reebok
MenTrue to sizeWomenTrue to sizeKidsTrue to sizeRecommended: True to sizeClassic true-to-size fit
ASICS
MenRuns narrowWomenRuns narrowKidsRuns narrowRecommended: Size up ½Consider wide sizing
On Running
MenTrue to sizeWomenTrue to sizeKidsTrue to sizeRecommended: True to sizePerformance running fit
Salomon
MenRuns smallWomenRuns smallRecommended: Size up ½Trail-specific fit
More guides & country converters
Country-specific converters preload the right sizing system. Guides explain the quirks behind each system and how to measure your foot accurately.
Country converters
- EU to US shoe size converterConvert European sizes to US in one click.
- UK to US shoe size converterBritish sizes mapped to US for men, women, and kids.
- Japanese shoe size converterJP sizes equal foot length in centimetres.
- Korean shoe size converterKR sizes equal foot length in millimetres.
- Australian shoe size converterWomen’s AU follows US, men’s AU follows UK - the AU sizing quirk.
Guides
- How to measure your foot for shoesStep-by-step home measurement with a diagram.
- EU shoe sizes explainedParis-point system, ranges, and why EU 42 might be US 9 or 10.5.
- UK vs US shoe sizesThe half-size offset and men/women conversions.
- Japanese shoe sizes explainedJP sizes equal foot length in centimetres - straightforward once you know.
- Korean shoe sizes explainedKR sizing is foot length in millimetres - common on athletic brands.
- Australian shoe sizes explainedAU women’s follows US; AU men’s follows UK - the gotcha that catches everyone.
- Kids’ shoe size guideToddler, Little Kids, and Big Kids - the three US tiers and where they reset.
- Shoe width guide (2A to 4E)Width letters across US, EU, and UK plus when to choose wide-fit.