ASICS vs Salomon Shoe Size — Which Runs Smaller?
ASICS runs about half a US size large compared to Salomon. If you wear ASICS in US 9, start by checking Salomon in US 9.5. Both brands use the same foot-length measurement — the difference is in the last shape, not the conversion formula.
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Switching rule for this pair
At the US 9 anchor, the same 262mm foot maps to Salomon US 9.5. In plain terms: when moving from ASICS to Salomon, go up half a US size.
- ASICS: true to size signal from 75% of buyer-fit data.
- Salomon: runs small signal from 45% of buyer-fit data.
- If you know your foot length in millimetres, use the Size Passport above before trusting a label-to-label switch.
ASICS → Salomon size chart
| US Men (ASICS) | ASICS → Salomon | Foot length |
|---|---|---|
| 7 | 7.5 | 246mm |
| 8 | 8.5 | 254mm |
| 9 | 9.5 | 262mm |
| 10 | 10.5 | 271mm |
| 11 | 11.5 | 279mm |
Fit verdict
- ASICS: True to size (75% of buyers)
- Salomon: Runs small (45% of buyers)
Why the sizes differ
ASICS runs ~0.5 size larger than Salomon.
ASICS foot length is measured in millimetres, then mapped to US size. The Salomon last fits the same foot, but the starting label shifts by about half a US size because of each brand's fit bias — not a different conversion formula.