Unit Converters
Shoe Size Converter
Convert shoe sizes between US, UK, and EU sizing for men's and women's shoes.
8.5
UK
42.5
EU
27
cm
Sizing is approximate and can vary by brand — check the brand's own size chart when possible.
How the Shoe Size Converter works
Choose men's or women's sizing and select a US size — the equivalent UK size, EU size, and length in centimeters appear instantly.
Frequently asked questions
Are shoe sizes the same worldwide?
No — US, UK, and EU sizing all use different scales, and even sizing within one system can vary slightly between brands.
How accurate is this converter?
It uses standard published size conversion charts, which are accurate for most major brands but can vary by a half size for some styles.
Guides that cover this
Why Unit Conversion Still Trips Everyone Up (and How to Get It Right)A guide to the everyday unit conversions — length, weight, temperature, shoe and clothing sizes — that cause the most mistakes.Converting Shoe Sizes Between US, UK, and EU CorrectlyHow US, UK, and EU shoe size scales relate to each other, and why the conversion isn't a simple fixed offset.Why the Same US Size Doesn't Fit the Same Across BrandsWhy shoe sizing standards leave room for real fit variation between brands, even at the identical labeled size.Men's vs. Women's Shoe Size Scales: Why They're Not the Same NumbersWhy the same physical foot length corresponds to a different labeled size number on the men's and women's shoe size scales.How to Use the Shoe Size ConverterA quick walkthrough of converting shoe sizes between US, UK, and EU scales.Shoe Size Converter: How It Works and How to Use ItA quick guide to the shoe size converter — what it calculates, how the math works, and tips for getting an accurate result.