Converting EU to men's US shoe size uses a foot-length-anchored chart rather than a formula. As a reference point, an EU 43 is close to a US men's 9.5–10.
Reading a men's US size off an EU number means accounting for the fact that EU sizes are spaced by centimeter ranges rather than the US half-size steps — an EU 40 is a US men's 7, an EU 42.5 is a US 9, and an EU 44 is a US 10, but some brands shift these by half a size in either direction.
Because the EU number can straddle the line between two US half-sizes (an EU 43, for instance, sits close to both a US 9.5 and a US 10 depending on the brand), measuring your actual foot length in cm and using the measure-your-foot tool on the main shoe converter is the most reliable check.
| EU | US |
|---|---|
| 39 | 6 |
| 39.5 | 6.5 |
| 40 | 7 |
| 40.5 | 7.5 |
| 41 | 8 |
| 42 | 8.5 |
| 42.5 | 9 |
| 43 | 9.5 |
| 44 | 10 |
| 44.5 | 10.5 |
| 45 | 11 |
| 45.5 | 11.5 |
| 46 | 12 |
| 46.5 | 12.5 |
| 47 | 13 |
An EU 42.5 is a US men's 9, corresponding to a foot length of about 27 cm.
An EU 43 sits close to a US men's 9.5–10 depending on the brand — check the exact foot length in cm if you're between the two.
No — this is the men's chart. A women's shoe with the same EU number converts to a different, larger US number.