Converse vs Nike Shoe Size - Which Runs Smaller?
Converse runs about half a US size small compared to Nike. If you wear Converse in US 9, start by checking Nike in US 8.5. Both brands use the same foot-length measurement; the difference is in the last shape, not the conversion formula.
Converse to Nike size chart
| US Men (Converse) | Converse -> Nike | Foot length |
|---|---|---|
| 7 | 6.5 | 246mm |
| 8 | 7.5 | 254mm |
| 9 | 8.5 | 262mm |
| 10 | 9.5 | 271mm |
| 11 | 10.5 | 279mm |
Fit verdict
- Converse: Runs small (65% of buyers)
- Nike: Runs small (55% of buyers)
Why the sizes differ
Converse runs about half a US size small compared to Nike, with roughly 4mm between the matched fit records.
Converse foot length is measured in millimetres, then mapped to US size. The Nike starting size shifts by about half a US size because of each brand fit bias, not a different conversion formula.