New Balance vs Puma Shoe Size — Which Runs Smaller?
New Balance runs about half a US size large compared to Puma. If you wear New Balance in US 9, start by checking Puma 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 Puma US 9.5. In plain terms: when moving from New Balance to Puma, go up half a US size.
- New Balance: runs large signal from 50% of buyer-fit data.
- Puma: true to size signal from 65% of buyer-fit data.
- If you know your foot length in millimetres, use the Size Passport above before trusting a label-to-label switch.
New Balance → Puma size chart
| US Men (New Balance) | New Balance → Puma | Foot length |
|---|---|---|
| 7 | 7.5 | 246mm |
| 8 | 8.5 | 254mm |
| 9 | 9.5 | 262mm |
| 10 | 10.5 | 271mm |
| 11 | 11.5 | 279mm |
Fit verdict
- New Balance: Runs large (50% of buyers)
- Puma: True to size (65% of buyers)
Why the sizes differ
New Balance runs ~0.5 size larger than Puma.
New Balance foot length is measured in millimetres, then mapped to US size. The Puma 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.