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Shoe sizing systems differ by country and by brand, making it hard to know your size when shopping internationally.
This converter translates a known shoe size between US Men's, US Women's, UK, EU, and centimeter foot length using a standard adult sizing chart.
How it works
Enter your known size and select which sizing system it's in. The calculator finds that size on a standard unisex adult conversion chart (interpolating between listed sizes if needed) and reads across the row for the equivalent size in every other system.
- Enter known size.
- Enter size system.
- Click Calculate to see your results.
Examples
US Men's 9
A US Men's size 9 converts to approximately US Women's 10.5, UK 8, EU 42, and a 26 cm foot length.
Who should use it
- Converting a shoe size before ordering from an international or overseas retailer.
- Understanding how your size compares across US, UK, and EU sizing systems.
Industry applications
- Footwear retail and e-commerce
- International shopping and travel
Advantages
- Converts between five common sizing systems in a single lookup.
- Uses interpolation for sizes that fall between standard chart entries.
Limitations
- Sizing varies by brand — treat results as a close estimate, not an exact guarantee of fit.
Common mistakes to avoid
- Assuming EU and UK sizes shift by a fixed offset — the relationship isn't perfectly linear across the full size range.
- Comparing a US Men's size directly to a US Women's size without converting, since they're not the same scale.
Best practices
- When buying from an international retailer, measure your actual foot length in centimeters for the most reliable conversion.
Tips
- Foot length in centimeters is the most universal reference point — measure both feet (they're often slightly different sizes) and size for the larger one.