What is a US size 9 in UK and EU?

A US men's 9 is roughly a UK 8.5 and an EU 42–43. Brands vary, so check the foot-length column for the most reliable comparison.

How do I measure my foot length?

Stand on a sheet of paper, mark heel and longest toe, and measure the distance in millimetres. Enter that as the foot length to find your size.

Are these sizes exact?

They are close approximations based on standard charts. Different brands run small or large, so use them as a starting point. Nothing you enter is uploaded.

Shoe Size Converter

Convert shoe sizes between US, UK, EU and foot length in mm.

Shoe size converter

Convert shoe sizes across the systems that matter when you shop internationally: US, UK, EU and foot length in millimetres, with separate men’s and women’s charts.

The most reliable approach is to measure your actual foot length and convert from there, since brand sizing drifts. Everything is calculated locally in your browser — nothing is uploaded.