Nike vs Reebok Shoe Size Comparison
Reebok runs about half a US size larger than Nike, so you may need to size down. The gap is about 4mm in measured shoe length plus each brand fit bias. Use the table below to convert any Nike US size to a starting size in Reebok, with UK, EU and CM alongside.
Nike to Reebok size chart
| Nike US | Reebok US | Reebok range | Reebok UK | Reebok EU | Reebok CM |
|---|---|---|---|---|---|
| 7 | 6.5 | 5.5-7.5 | 5.5 | 36 | 24 |
| 8 | 7.5 | 6.5-8.5 | 6.5 | 37 | 25 |
| 9 | 8.5 | 7.5-9.5 | 7.5 | 39 | 26 |
| 10 | 9.5 | 8.5-10.5 | 8.5 | 40 | 26.5 |
| 11 | 10.5 | 9.5-11.5 | 9.5 | 41 | 27.5 |
| 12 | 11.5 | 10.5-12.5 | 10.5 | 43 | 28.5 |
| 13 | 12.5 | 11.5-13.5 | 11.5 | 44 | 29 |
Data confidence
Why Nike and Reebok differ
That works out to roughly 4mm of real shoe length. We map every size through foot length in millimetres and then re-apply each brand empirical fit offset, so the comparison reflects how the shoes actually fit rather than how they are labelled.
Brand-level estimate: per-model fit can vary by a full size or more within a brand.