ASICS to Karhu men's shoe size
The short answer
ASICS 13.5 is Karhu 13 or 14 by the two brands' own charts. 1 of 14 ASICS sizes land on a different label at Karhu.
At least one of the two brands publishes no foot length, so the rows line up the US size both charts print. Treat it as the label conversion, not a fit.
| ASICS | ASICS builds it for | Karhu, by chart | Same label | Karhu builds it for | Karhu also prints |
|---|---|---|---|---|---|
| 4 | not published | not made | not published | not published | not published |
| 5 | not published | not made | not published | not published | not published |
| 5.5 | not published | not made | not published | not published | not published |
| 6 | not published | not made | not published | not published | not published |
| 6.5 | not published | not made | not published | not published | not published |
| 7 | not published | not made | not published | not published | not published |
| 7.5 | not published | not made | not published | not published | not published |
| 8 | not published | 8 | not published | not published | UK 7 · EU 41.5 |
| 8.5 | not published | 8.5 | not published | not published | UK 7.5 · EU 42 |
| 9 | not published | 9 | not published | not published | UK 8 · EU 42.5 |
| 9.5 | not published | 9.5 | not published | not published | UK 8.5 · EU 43.5 |
| 10 | not published | 10 | not published | not published | UK 9 · EU 44 |
| 10.5 | not published | 10.5 | not published | not published | UK 9.5 · EU 44.5 |
| 11 | not published | 11 | not published | not published | UK 10 · EU 45 |
| 11.5 | not published | 11.5 | not published | not published | UK 10.5 · EU 46 |
| 12 | not published | 12 | not published | not published | UK 11 · EU 46.5 |
| 12.5 | not published | 12.5 | not published | not published | UK 11.5 · EU 47 |
| 13 | not published | 13 | not published | not published | UK 12 · EU 48 |
| 13.5 | not published | 13 or 14 | not published | not published | UK 12 · EU 48 |
| 14 | not published | 14 | not published | not published | UK 13 · EU 49 |
| 15 | not published | 15 | not published | not published | UK 14 · EU 50 |
| 16 | not published | not made | not published | not published | not published |
What wearers say
Charts describe a garment, not a fit. We do not collect fit reports for this category yet, so this table is the two brands' own claims and nothing more.
Sources
- ASICS size guide, read on 2026-09-18. ASICS on TrueToSize
- Karhu size guide, read on 2026-09-18. Karhu on TrueToSize