Shoe Size Converter
Enter a shoe size and the system it belongs to. The calculator shows the nearest size in the other systems and the foot length that size is made for.
Type a number and the answer appears straight away.
US men's size9
- US women's
- 10.5
- UK
- 8
- EU
- 42.5
- Foot length
- 26.2 cm (10.33 in)
An approximate guide. Sizing differs between brands and styles, so check the maker's own chart or measure your foot before buying.
The math behind it: Shoe Size Converter
US men's size = 3 x foot length in inches - 22; US women's = men's + 1.5; UK = US men's - 1
A US men's 9 is about a UK 8, an EU 42.5 and a US women's 10.5, and fits a foot about 26.2 cm long.
Treat the results as an approximate guide. There is no enforced international standard and sizing differs between brands, so check the maker's own chart, or measure your foot, before you buy.
Common questions
How do I convert US shoe sizes to EU?
There is no exact formula, but a US men's 9 is about an EU 42.5 and a US men's 10 about an EU 43.5. A US women's 8 is about an EU 39.
What is the difference between men's and women's shoe sizes?
In US sizing, a women's size is 1.5 larger than the men's size for the same length of foot. A men's 7 is roughly a women's 8.5.
What is a US size 9 in UK sizes?
A US men's 9 is a UK 8. UK sizes run one below US men's sizes.
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