ASICS vs Converse Shoe Size - Which Runs Smaller?
ASICS runs about 1 US size large compared to Converse. If you wear ASICS in US 9, start by checking Converse in US 10. Both brands use the same foot-length measurement; the difference is in the last shape, not the conversion formula.
ASICS to Converse size chart
| US Men (ASICS) | ASICS -> Converse | Foot length |
|---|---|---|
| 7 | 8 | 246mm |
| 8 | 9 | 254mm |
| 9 | 10 | 262mm |
| 10 | 11 | 271mm |
| 11 | 12 | 279mm |
Fit verdict
- ASICS: True to size (75% of buyers)
- Converse: Runs small (65% of buyers)
Why the sizes differ
ASICS runs about 1 US size large compared to Converse, with roughly 8mm between the matched fit records.
ASICS foot length is measured in millimetres, then mapped to US size. The Converse starting size shifts by about 1 US size because of each brand fit bias, not a different conversion formula.