Converse vs Adidas Shoe Size - Which Runs Smaller?

Converse runs about 1 US size small compared to Adidas. If you wear Converse in US 9, start by checking Adidas in US 8. Both brands use the same foot-length measurement; the difference is in the last shape, not the conversion formula.

Converse to Adidas size chart

Starting Adidas size to check when you wear Converse in each US men size.
US Men (Converse) Converse -> Adidas Foot length
7 6 246mm
8 7 254mm
9 8 262mm
10 9 271mm
11 10 279mm

Fit verdict

  • Converse: Runs small (65% of buyers)
  • Adidas: True to size (70% of buyers)

Why the sizes differ

Converse runs about 1 US size small compared to Adidas, with roughly 8mm between the matched fit records.

Converse foot length is measured in millimetres, then mapped to US size. The Adidas starting size shifts by about 1 US size because of each brand fit bias, not a different conversion formula.