Shoe Size Converter
Convert shoe sizes between US, UK, and EU.
Shoe sizes across regions
Shoe sizing differs by region and gender: a US men's 9 is about a UK 8.5 and an EU 42.5, all derived from foot length. This lines up the common equivalents.
It takes the risk out of buying shoes from an international brand, where a US 9, UK 8.5, and EU 42.5 map to the same foot but a wrong guess means a return.
Brands vary
Lasts differ between makers, so treat these as a guide and measure your foot in centimetres for accuracy. The lookup runs on your device with nothing sent anywhere.
Frequently Asked Questions
How does the shoe size converter work?
The chart uses common adult size approximations across US, UK, EU, and foot length in centimeters. A US men's 9 is roughly UK 8.5, EU 42, and 27 cm.
When should I use this tool?
Use it when comparing international shoe listings or checking a size chart before buying.
What is the main limitation?
Brands vary by last shape and width; use the result as a starting point, not a guaranteed fit.
Is this converter private?
Yes. It runs entirely in your browser, so your values are not uploaded or stored.
More free browser utilities for conversion, formatting, and technical cleanup.