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Finding your exact size at On Running can be complex without an accurate conversion guide. Our algorithm has analyzed the official On Running size charts for shoes to provide you with the perfect fit equivalents.
Whether you're looking for US, UK sizing, or centimeters (CM), our database covers sizes ranging from 40 EU to 48 EU. Use our interactive calculator below to instantly convert your On Running measurements across 500+ other popular brands.
| EU | US | UK | Length (cm) |
|---|---|---|---|
| 40 | 7 | 6.5 | 25 |
| 40.5 | 7.5 | 7 | 25.5 |
| 41 | 8 | 7.5 | 26 |
| 42 | 8.5 | 8 | 26.5 |
| 42.5 | 9 | 8.5 | 27 |
| 43 | 9.5 | 9 | 27.5 |
| 44 | 10 | 9.5 | 28 |
| 44.5 | 10.5 | 10 | 28.5 |
| 45 | 11 | 10.5 | 29 |
| 46 | 11.5 | 11 | 29.5 |
| 47 | 12 | 11.5 | 30 |
| 47.5 | 12.5 | 12 | 30.5 |
| 48 | 13 | 12.5 | 31 |
On Running sizing can vary. Our tool instantly compares On Running measurements against Nike, Adidas, and 500+ other brands.
The most accurate method is to measure your foot or body in centimeters (CM) and input that value into our converter for a precise On Running equivalent.
It often depends on the specific model, but you can use our size converter above to find your exact match based on a brand you already wear.
While official charts are a great starting point, our converter aggregates data and user feedback to give you a more realistic fit recommendation for On Running.