Shoe Size Converter
Convert shoe sizes US/EU/UK.
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Result
What is a Shoe Size Converter?
A Shoe Size Converter is a free online tool that converts shoe sizes between US, UK, European (EU), and Japanese (CM) sizing systems. It helps shoppers and sellers navigate the different shoe size standards used around the world.
How to calculate shoe size conversion manually (the formula)
Shoe size conversion uses formulas based on foot length. For US men: size = (foot length in inches × 3) − 22. For US women: size = (foot length in inches × 3) − 21. For EU: size = (foot length in cm × 1.5) + 2. Each system has different starting points and increments.
Example calculation
A foot length of 10 inches: US men's size = (10 × 3) − 22 = size 8. US women's = (10 × 3) − 21 = size 9. A foot length of 26 cm: EU size = (26 × 1.5) + 2 = size 41.
Common mistakes
- Assuming US and UK sizes are the same — US men's sizes are 1 larger than UK. US women's sizes are 2 larger than UK. A US women's 8 is a UK 6.
- Ignoring width sizing — Shoe size is about length, but width also matters. Different brands offer narrow (N), standard (M), and wide (W) widths.
- Using unisex size conversions — Men's and women's sizing scales differ. Converting a women's size 8 to men's is not simply a fixed offset.
Frequently asked questions
What is a Shoe Size Converter?
A Shoe Size Converter is a tool that converts shoe sizes between different sizing systems, including US, UK, European (EU), and Japanese (CM) sizes.
How do US shoe sizes compare to UK sizes?
US men's sizes are typically 1 size larger than UK sizes. For example, a US men's size 10 is a UK size 9. Women's US sizes are about 2 sizes larger than UK sizes.
What is my EU size if I wear US size 9?
A US men's size 9 typically converts to EU size 42, and a US women's size 9 typically converts to EU size 40.
How are European shoe sizes measured?
European shoe sizes are based on the length of the last (the foot-shaped template) measured in Paris points, where 1 Paris point equals 2/3 of a centimetre.
What is a Japanese shoe size in centimetres?
Japanese shoe sizes directly indicate the foot length in centimetres. For example, size 26.0 corresponds to a foot length of 26.0 cm.