👟 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.
A ASICS 9 works out to a Nike 9.5 — about half a size up. The chart below has every size.
ASICS → Nike: size up half a size
A ASICS 9 is a Nike 9.5.
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 |
| 7 | 7.5 | 6 | 38 | 24.3 |
| 7.5 | 8 | 6.5 | 38.5 | 24.7 |
| 8 | 8.5 | 7 | 39.5 | 25.1 |
| 8.5 | 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 |
| 14.5 | 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 9 in Nike?
A ASICS 9 is about a Nike 9.5 — they share a foot length of roughly 26.3 cm (UK 8, EU 41.5).
Do ASICS and Nike fit the same?
No — ASICS runs true to size and Nike runs small, so size up half a size when you switch.
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