👟 Brand to Brand
ASICS to Nike Shoe Size Conversion
Switching from ASICS to Nike? ASICS runs true to size and Nike runs small, so the size you order changes. Here's the full chart.
Nike runs 0.5 size larger than ASICS, so you may need to size down when switching.
Size down 0.5 moving to Nike
Nike runs larger — order half a size smaller than your ASICS size.
Find your ASICS size on the left, read across for Nike:
| ASICS size | Nike size | UK | EU | Foot (cm) |
|---|---|---|---|---|
| 6.5 | 7 | 5.5 | 37 | 23.5 |
| 6.5 | 7 | 5.5 | 37.5 | 23.9 |
| 7 | 7.5 | 6 | 38 | 24.3 |
| 7.5 | 8 | 6.5 | 38.5 | 24.7 |
| 8 | 8.5 | 7 | 39.5 | 25.1 |
| 8 | 8.5 | 7 | 40 | 25.5 |
| 8.5 | 9 | 7.5 | 41 | 25.9 |
| 9 | 9.5 | 8 | 41.5 | 26.3 |
| 9.5 | 10 | 8.5 | 42.5 | 26.7 |
| 10 | 10.5 | 9 | 43 | 27.1 |
| 10.5 | 11 | 9.5 | 43.5 | 27.5 |
| 11 | 11.5 | 10 | 44 | 27.9 |
| 11.5 | 12 | 10.5 | 44.5 | 28.3 |
| 12 | 12.5 | 11 | 45.5 | 28.7 |
| 12.5 | 13 | 11.5 | 46 | 29.1 |
| 13 | 13.5 | 12 | 47 | 29.5 |
| 13.5 | 14 | 12.5 | 47.5 | 29.9 |
| 14 | 14.5 | 13 | 48 | 30.3 |
| 14 | 14.5 | 13 | 48.5 | 30.7 |
| 14.5 | 15 | 13.5 | 49 | 31.1 |
| 15 | 15.5 | 14 | 49.5 | 31.5 |
⚠️ Fit varies by model. ASICS runs true to size with a roomy toe box; wide fittings are widely available. Nike tends to run about half a size small — most people size up half, and lifestyle models (Air Force 1, Blazer) run especially snug.
Nike to ASICS → · ASICS chart · Nike chart · Brand finder
What is a ASICS 10.5 in Nike?
A ASICS 10.5 is about a Nike 11 — they share a foot length of roughly 27.5 cm (UK 9.5, EU 43.5).
Do ASICS and Nike fit the same?
Not quite — Nike runs about 0.5 size larger than ASICS.
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