👟 Brand to Brand
On to Reebok Shoe Size Conversion
Switching from On to Reebok? On runs true to size and Reebok runs small, so the size you order changes. Here's the full chart.
A On 9 works out to a Reebok 9.5 — about half a size up. The chart below has every size.
On → Reebok: size up half a size
A On 9 is a Reebok 9.5.
Find your On size on the left, read across for Reebok:
| On size | Reebok size | UK | EU | Foot (cm) |
|---|---|---|---|---|
| 6.5 | 7 | 5.5 | 37 | 23.5 |
| 7 | 7.5 | 6 | 38 | 24.3 |
| 7.5 | 8 | 6.5 | 38.5 | 24.7 |
| 8 | 8.5 | 7 | 39.5 | 25.1 |
| 8.5 | 9 | 7.5 | 41 | 25.9 |
| 9 | 9.5 | 8 | 41.5 | 26.3 |
| 9.5 | 10 | 8.5 | 42.5 | 26.7 |
| 10 | 10.5 | 9 | 43 | 27.1 |
| 10.5 | 11 | 9.5 | 43.5 | 27.5 |
| 11 | 11.5 | 10 | 44 | 27.9 |
| 11.5 | 12 | 10.5 | 44.5 | 28.3 |
| 12 | 12.5 | 11 | 45.5 | 28.7 |
| 12.5 | 13 | 11.5 | 46 | 29.1 |
| 13 | 13.5 | 12 | 47 | 29.5 |
| 13.5 | 14 | 12.5 | 47.5 | 29.9 |
| 14 | 14.5 | 13 | 48 | 30.3 |
| 14.5 | 15 | 13.5 | 49 | 31.1 |
| 15 | 15.5 | 14 | 49.5 | 31.5 |
⚠️ Fit varies by model. On (On Running) runs true to size for most, with a snug, performance fit. Reebok runs about half a size small across many models.
Reebok to On → · On chart · Reebok chart · Brand finder
What is a On 9 in Reebok?
A On 9 is about a Reebok 9.5 — they share a foot length of roughly 26.3 cm (UK 8, EU 41.5).
Do On and Reebok fit the same?
No — On runs true to size and Reebok runs small, so size up half a size when you switch.
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