Nike vs Under Armour shoe sizing
Compare Nike and Under Armour shoe sizes in EU, US and UK. Use this chart to see size differences and check whether Nike or Under Armour runs smaller or larger.
Choose your size to see the result.
| Nike (EU) | Under Armour (EU) | Baseline (CM) |
|---|---|---|
| 35.5 | 40 | 21.6 |
| 36 | 40 | 22 |
| 36.5 | 40 | 22.4 |
| 37.5 | 40 | 22.9 |
| 38 | 40 | 23.3 |
| 38.5 | 40 | 23.7 |
| 39 | 40 | 24.1 |
| 40 | 40 | 24.5 |
| 40.5 | 40 | 25 |
| 41 | 40.5 | 25.4 |
| 42 | 41 | 25.8 |
| 42.5 | 41 | 26.2 |
| 43 | 42 | 26.7 |
| 44 | 43 | 27.1 |
| 44.5 | 44 | 27.5 |
| 45 | 44.5 | 27.9 |
| 45.5 | 45 | 28.3 |
| 46 | 45.5 | 28.8 |
| 47 | 45.5 | 29.2 |
| 47.5 | 46 | 29.6 |
| 48 | 47 | 30 |
| 48.5 | 47.5 | 30.5 |
| 49 | 47.5 | 30.9 |
| 49.5 | 48.5 | 31.3 |
| 50 | 48.5 | 31.7 |
| 50.5 | 49.5 | 32.2 |
| 51 | 49.5 | 32.6 |
| 51.5 | 49.5 | 33 |
| 52 | 50.5 | 33.4 |
| 52.5 | 50.5 | 33.9 |
| 53 | 50.5 | 34.3 |
| 53.5 | 50.5 | 34.7 |
| 54 | 50.5 | 35.1 |
| 54.5 | 50.5 | 35.5 |
| 55 | 50.5 | 36 |
| 55.5 | 50.5 | 36.4 |
| 56 | 50.5 | 36.8 |
| 56.5 | 50.5 | 37.2 |
FAQ
How do I convert Nike to Under Armour?
Use the converter above. We map sizes via official chart baselines (cm/EU) when available.
Do these brands run small or large?
Based on official charts, Under Armour EU labels are typically -1.0 compared to Nike for similar foot length (cm). Real fit can vary by model.
What if I’m between sizes?
If you prefer a snug fit, lean down; for extra room, lean up - and always check the brand’s model-specific guidance.