Vans vs Adidas Shoe Size - Which Runs Smaller?

Vans runs about half a US size small compared to Adidas. If you wear Vans in US 9, start by checking Adidas in US 8.5. Both brands use the same foot-length measurement; the difference is in the last shape, not the conversion formula.

Vans to Adidas size chart

Starting Adidas size to check when you wear Vans in each US men size.
US Men (Vans) Vans -> Adidas Foot length
7 6.5 246mm
8 7.5 254mm
9 8.5 262mm
10 9.5 271mm
11 10.5 279mm

Fit verdict

  • Vans: Runs small (60% of buyers)
  • Adidas: True to size (70% of buyers)

Why the sizes differ

Vans runs about half a US size small compared to Adidas, with roughly 4mm between the matched fit records.

Vans foot length is measured in millimetres, then mapped to US size. The Adidas starting size shifts by about half a US size because of each brand fit bias, not a different conversion formula.