US to EU shoe size
Quick answer: men's US 9 = EU 42.5 and US 10 = EU 44. Women's US 8 = EU 38.5 and US 9 = EU 39.5. EU sizes are the same system for both — but the US number you start from is not, so use the right chart.
Men — US to EU
| US | UK | EU | Foot length (cm) | JP (cm) |
|---|---|---|---|---|
| 6 | 5.5 | 39 | 24 | 24 |
| 6.5 | 6 | 39.5 | 24.5 | 24.5 |
| 7 | 6.5 | 40 | 25 | 25 |
| 7.5 | 7 | 40.5 | 25.5 | 25.5 |
| 8 | 7.5 | 41 | 26 | 26 |
| 8.5 | 8 | 42 | 26.5 | 26.5 |
| 9 | 8.5 | 42.5 | 27 | 27 |
| 9.5 | 9 | 43.5 | 27.5 | 27.5 |
| 10 | 9.5 | 44 | 28 | 28 |
| 10.5 | 10 | 44.5 | 28.5 | 28.5 |
| 11 | 10.5 | 45 | 29 | 29 |
| 11.5 | 11 | 45.5 | 29.5 | 29.5 |
| 12 | 11.5 | 46 | 30 | 30 |
| 13 | 12.5 | 47.5 | 31 | 31 |
| 14 | 13.5 | 48.5 | 32 | 32 |
| 15 | 14.5 | 49.5 | 33 | 33 |
Women — US to EU
| US | UK | EU | Foot length (cm) | JP (cm) |
|---|---|---|---|---|
| 5 | 3 | 35.5 | 22 | 22 |
| 5.5 | 3.5 | 36 | 22.5 | 22.5 |
| 6 | 4 | 36.5 | 23 | 23 |
| 6.5 | 4.5 | 37 | 23.5 | 23.5 |
| 7 | 5 | 37.5 | 24 | 24 |
| 7.5 | 5.5 | 38 | 24.5 | 24.5 |
| 8 | 6 | 38.5 | 25 | 25 |
| 8.5 | 6.5 | 39 | 25.5 | 25.5 |
| 9 | 7 | 39.5 | 26 | 26 |
| 9.5 | 7.5 | 40 | 26.5 | 26.5 |
| 10 | 8 | 40.5 | 27 | 27 |
| 10.5 | 8.5 | 41 | 27.5 | 27.5 |
| 11 | 9 | 41.5 | 28 | 28 |
| 11.5 | 9.5 | 42 | 28.5 | 28.5 |
| 12 | 10 | 42.5 | 29 | 29 |
EU sizes follow the Paris point system (one EU step ≈ 6.67 mm of last length), which is why EU numbers jump in halves and thirds in some brand charts. General conversions round to the nearest half — brand charts are the final word.
Frequently asked questions
What EU size is a US 10?
Men: EU 44. Women: EU 40.5.
What US size is EU 42?
Roughly men's US 8.5 or women's US 10.5 in the general chart — check which range you are shopping in.
Is EU sizing unisex?
The EU scale itself is shared, but men's and women's feet of the same EU size are cut on different lasts. Convert within the correct gender chart.