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Under Armour to ASICS Shoe Size Conversion
Switching from Under Armour to ASICS? Under Armour runs small and ASICS runs true to size, so the size you order changes. Here's the full chart.
Under Armour runs 0.5 size larger than ASICS, so you may need to size down when switching.
Size up 0.5 moving to ASICS
ASICS runs smaller — order half a size larger than your Under Armour size.
Find your Under Armour size on the left, read across for ASICS:
| Under Armour size | ASICS size | UK | EU | Foot (cm) |
|---|---|---|---|---|
| 6.5 | 6 | 5.5 | 37 | 23.5 |
| 6.5 | 6 | 5.5 | 37.5 | 23.9 |
| 7 | 6.5 | 6 | 38 | 24.3 |
| 7.5 | 7 | 6.5 | 38.5 | 24.7 |
| 8 | 7.5 | 7 | 39.5 | 25.1 |
| 8 | 7.5 | 7 | 40 | 25.5 |
| 8.5 | 8 | 7.5 | 41 | 25.9 |
| 9 | 8.5 | 8 | 41.5 | 26.3 |
| 9.5 | 9 | 8.5 | 42.5 | 26.7 |
| 10 | 9.5 | 9 | 43 | 27.1 |
| 10.5 | 10 | 9.5 | 43.5 | 27.5 |
| 11 | 10.5 | 10 | 44 | 27.9 |
| 11.5 | 11 | 10.5 | 44.5 | 28.3 |
| 12 | 11.5 | 11 | 45.5 | 28.7 |
| 12.5 | 12 | 11.5 | 46 | 29.1 |
| 13 | 12.5 | 12 | 47 | 29.5 |
| 13.5 | 13 | 12.5 | 47.5 | 29.9 |
| 14 | 13.5 | 13 | 48 | 30.3 |
| 14 | 13.5 | 13 | 48.5 | 30.7 |
| 14.5 | 14 | 13.5 | 49 | 31.1 |
| 15 | 14.5 | 14 | 49.5 | 31.5 |
⚠️ Fit varies by model. Under Armour tends to run about half a size small, especially in performance trainers. ASICS runs true to size with a roomy toe box; wide fittings are widely available.
ASICS to Under Armour → · Under Armour chart · ASICS chart · Brand finder
What is a Under Armour 10.5 in ASICS?
A Under Armour 10.5 is about a ASICS 10 — they share a foot length of roughly 27.5 cm (UK 9.5, EU 43.5).
Do Under Armour and ASICS fit the same?
Not quite — ASICS runs about 0.5 size smaller than Under Armour.
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