Brand guide
ASICS size chart & fit
ASICS runs true to size with a snug midfoot. GEL-Kayano and GT-2000 are available in Wide (2E) and Extra Wide (4E).
Sizing philosophy
Japanese engineering — precise fit, roomy toe box, built for long-distance running.
How ASICS shoes fit
GEL-Kayano, Nimbus, GT-2000: true to size, snug midfoot, generous toe box. Novablast and Superblast: true to size. Lifestyle GEL-1130: true to size.
Width & last
Best-in-class width options — Standard (D), Wide (2E), Extra Wide (4E) on the main running franchises.
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Men's shoe sizing
| US | UK | EU | CM |
|---|---|---|---|
| 6 | 5.5 | 39 | 24.0 |
| 6.5 | 6 | 39.5 | 24.5 |
| 7 | 6.5 | 40 | 25.0 |
| 7.5 | 7 | 40.5 | 25.4 |
| 8 | 7.5 | 41 | 26.0 |
| 8.5 | 8 | 42 | 26.5 |
| 9 | 8.5 | 42.5 | 27.0 |
| 9.5 | 9 | 43 | 27.5 |
| 10 | 9.5 | 44 | 28.0 |
| 10.5 | 10 | 44.5 | 28.5 |
| 11 | 10.5 | 45 | 29.0 |
| 11.5 | 11 | 45.5 | 29.5 |
| 12 | 11.5 | 46 | 30.0 |
| 13 | 12.5 | 47.5 | 31.0 |
| 14 | 13.5 | 48.5 | 32.0 |
Women's shoe sizing
| US | UK | EU | CM |
|---|---|---|---|
| 5 | 2.5 | 35 | 22.0 |
| 5.5 | 3 | 35.5 | 22.5 |
| 6 | 3.5 | 36 | 23.0 |
| 6.5 | 4 | 37 | 23.5 |
| 7 | 4.5 | 37.5 | 24.0 |
| 7.5 | 5 | 38 | 24.5 |
| 8 | 5.5 | 38.5 | 25.0 |
| 8.5 | 6 | 39 | 25.5 |
| 9 | 6.5 | 40 | 26.0 |
| 9.5 | 7 | 40.5 | 26.5 |
| 10 | 7.5 | 41 | 27.0 |
| 10.5 | 8 | 42 | 27.5 |
| 11 | 8.5 | 42.5 | 28.0 |
| 12 | 9.5 | 43.5 | 29.0 |
vs other brands
vs Brooks
ASICS and Brooks fit similarly — both true to size with wide options. ASICS runs a fraction narrower in the midfoot.
vs Nike
ASICS toe box is roomier than Nike; midfoot is snugger.
Frequently asked questions
- Do ASICS shoes run small?
- No — they fit true to size. If you have wider feet, use the 2E option rather than sizing up.
Related
Reviewed against ASICS's published size chart · Last updated June 2026