Air Force 1 vs Air Max 90
Both are Nike models but they fit differently: Air Max 90 runs about 0 size s smaller than Air Force 1 at the same labelled US size.
At US men's 9 on Air Force 1
If you wear Air Force 1 in US 9, start with Air Max 90 in US 9.5: go up 0.5 US sizes. The calculation keeps the same foot length anchor, about 262mm, then removes the Air Force 1 fit offset (+0) and applies the Air Max 90 fit offset (-0.25).
| Model | Recommended US | Foot mm | UK | EU | CM |
|---|---|---|---|---|---|
| Air Force 1 | 9 | 262 | 8 | 39 | 26 |
| Air Max 90 (equivalent) | 9.5 | 262 | 8 | 39 | 26 |