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Size guide - On - Womens - Performance Shoes
Size guide provided by On.
| UK | 3 | 3.5 | 4 | 4.5 | 5 | 5.5 | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 |
| US | 5 | 5.5 | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11 |
| EU | 36 | 36.5 | 37 | 37.5 | 38 | 38.5 | 39 | 40 | 40.5 | 41 | 42 | 42.5 | 43 |
| UK | US | EU |
|---|---|---|
| 3 | 5 | 36 |
| 3.5 | 5.5 | 36.5 |
| 4 | 6 | 37 |
| 4.5 | 6.5 | 37.5 |
| 5 | 7 | 38 |
| 5.5 | 7.5 | 38.5 |
| 6 | 8 | 39 |
| 6.5 | 8.5 | 40 |
| 7 | 9 | 40.5 |
| 7.5 | 9.5 | 41 |
| 8 | 10 | 42 |
| 8.5 | 10.5 | 42.5 |
| 9 | 11 | 43 |