Shoe Size Converter
Convert international shoe sizes for men and women (US, UK, EU, cm).
Result
0
Base Unit
Relative Value
*Diagram shows values relative to the selected base unit (Centimeters).
Unit Information
US Sizing System
The US shoe size standard is based on a Brannock Device, a tool for measuring foot length and width. Men's and Women's sizes are on different scales, with a women's size typically being 1.5 sizes larger than a men's size for the same foot length (e.g., a Men's 8.5 is roughly a Women's 10).
UK Sizing System
The UK system is also based on a Brannock device but uses a different starting point. A UK size is typically 0.5 to 1 size smaller than the equivalent US men's size.
European (EU) Sizing System
The European sizing system is generally unisex and is based on the 'Paris point' system, where one Paris point is equal to two-thirds of a centimeter (0.667 cm). This system is used across most of continental Europe.
Centimeter (cm) Sizing System
Often used in Japan and other parts of Asia, this system (also known as Mondopoint) directly relates the shoe size to the length of the foot in centimeters. It is one of the most straightforward and standardized systems.
Formulas
US Men's Size ≈ UK Size + 0.5 to 1
A US men's size is generally half to one full size larger than the equivalent UK size.
US Women's Size ≈ US Men's Size + 1.5
A US women's size is approximately 1.5 sizes larger than a men's size for the same foot length.
EU Size ≈ (Foot Length in cm + 1.5) * 1.5
This is a rough estimation of how European sizes relate to foot length in centimeters.
No Universal Formula
Shoe size conversion is not based on a precise mathematical formula but on standardized manufacturer charts. This tool uses these charts for accurate lookups.
Key Reference Points
- A US Men's 9 is roughly a UK 8.5, EU 42.5, and corresponds to a 27 cm foot.
- A US Men's 10.5 is roughly a UK 10, EU 44.5, and corresponds to a 28.5 cm foot.
- A US Men's 7 is roughly a UK 6.5, EU 40, and corresponds to a 25 cm foot.
- Width is not covered by these conversions; many systems offer different width options (e.g., D, EE).
- Always check the brand's specific size chart as variations are common.
- A US Women's 8 is roughly a UK 6, EU 39, and corresponds to a 25 cm foot.
- A US Women's 9 is roughly a UK 7, EU 40.5, and corresponds to a 26 cm foot.
- A US Women's 6 is roughly a UK 4, EU 36.5, and corresponds to a 23 cm foot.
- Sizing for athletic shoes can sometimes differ from formal shoes; it's common to go up half a size.
- Children's sizes use completely different scales not covered by this converter.