New Balance vs Nike Shoe Size - Which Runs Smaller?
New Balance runs about 1 US size large compared to Nike. If you wear New Balance in US 9, start by checking Nike in US 10. Both brands use the same foot-length measurement; the difference is in the last shape, not the conversion formula.
New Balance to Nike size chart
| US Men (New Balance) | New Balance -> Nike | Foot length |
|---|---|---|
| 7 | 8 | 246mm |
| 8 | 9 | 254mm |
| 9 | 10 | 262mm |
| 10 | 11 | 271mm |
| 11 | 12 | 279mm |
Fit verdict
- New Balance: Runs large (50% of buyers)
- Nike: Runs small (55% of buyers)
Why the sizes differ
New Balance runs about 1 US size large compared to Nike, with roughly 8mm between the matched fit records.
New Balance foot length is measured in millimetres, then mapped to US size. The Nike starting size shifts by about 1 US size because of each brand fit bias, not a different conversion formula.