Nike vs Adidas: The Ultimate Sizing Guide
•MyTrueSize Team
It’s the most common question in the sneaker world: "If I wear a size 10 in Adidas, what size am I in Nike?"
The short answer is: Nike generally runs smaller than Adidas by about 0.5 size. But it depends heavily on the model.
The General Rule
- Nike: Often runs narrow and slightly small.
- Adidas: Often runs true-to-size (TTS) or slightly large.
Example: If you comfortably wear a US 10 in the Adidas Ultraboost, you will likely need a US 10.5 in the Nike Air Max 90.
Model-by-Model Comparison
| Model | Fit | Advice |
|---|---|---|
| Nike Air Force 1 | Runs Large | Size DOWN 0.5 |
| Nike Air Max | Runs Small | Size UP 0.5 |
| Adidas Superstar | Runs Large | Size DOWN 0.5 |
| Adidas Yeezy 350 | Runs Small | Size UP 0.5 |
Why the Difference?
Nike uses a slightly narrower last (the mold used to shape the shoe) compared to Adidas. This is why people with wide feet often find Nike shoes tighter.
Pro Tip
Don't guess! Use our Size Converter above to get an exact match based on your specific shoe model.