ASICS vs Brooks Shoe Size Comparison
Brooks fits about the same as ASICS, so keep your usual size as the starting point. The gap is about 2mm in measured shoe length plus each brand fit bias. Use the table below to convert any ASICS US size to a starting size in Brooks, with UK, EU and CM alongside.
ASICS to Brooks size chart
| ASICS US | Brooks US | Brooks range | Brooks UK | Brooks EU | Brooks CM |
|---|---|---|---|---|---|
| 7 | 6.5 | 5.5-8 | 5.5 | 37 | 24.5 |
| 8 | 7.5 | 6.5-9 | 6.5 | 38 | 25 |
| 9 | 8.5 | 7.5-10 | 7.5 | 39 | 26 |
| 10 | 9.5 | 8.5-11 | 8.5 | 40 | 27 |
| 11 | 10.5 | 9.5-12 | 9.5 | 42 | 27.5 |
| 12 | 11.5 | 10.5-13 | 10.5 | 43 | 28.5 |
| 13 | 12.5 | 11.5-14 | 11.5 | 44 | 29.5 |
Data confidence
Why ASICS and Brooks differ
ASICS and Brooks are close at the brand level. We still map every size through foot length in millimetres, then apply each brand empirical fit offset.
Brand-level estimate: per-model fit can vary by a full size or more within a brand.