US 9 to EU shoe size
A US men's 9 is roughly EU 42–43 (UK 8.5). Conversions round between sizes, so this is a range — measure your foot in cm to be exact.
EU 42–43Europe
UK 8.5United Kingdom
US 9United States
US 9 across systems
| System | Size |
|---|---|
| US men | 9 |
| EU | 42–43 |
| UK | 8.5 |
EU sizes don't divide evenly into US sizes, so a US 9 can land on EU 42–43 depending on the brand — that's why you see a range, not one number. The reliable anchor is foot length: measure it in cm and match the brand's chart. Nike runs small (size up half); Adidas runs true.
Frequently asked questions
What is US 9 in EU shoe size?
Roughly EU 42–43 — it varies slightly by brand because sizes round between the two systems.
What is US 9 in UK shoe size?
About UK 8.5.