Onitsuka Tiger to Merrell men's shoe size
The short answer
Onitsuka Tiger 13.5 is Merrell 13 or 14 by the two brands' own charts. 1 of 15 Onitsuka Tiger sizes land on a different label at Merrell.
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.
| Onitsuka Tiger | Merrell, by chart | Same label | Merrell also prints |
|---|---|---|---|
| 4 | not made | not published | not published |
| 4.5 | not made | not published | not published |
| 5 | not made | not published | not published |
| 5.5 | not made | not published | not published |
| 6 | not made | not published | not published |
| 6.5 | not made | not published | not published |
| 7 | 7 | not published | UK 6.5 · EU 40 · CM / JP 25 |
| 7.5 | 7.5 | not published | UK 7 · EU 41 · CM / JP 25.5 |
| 8 | 8 | not published | UK 7.5 · EU 41.5 · CM / JP 26 |
| 8.5 | 8.5 | not published | UK 8 · EU 42 · CM / JP 26.5 |
| 9 | 9 | not published | UK 8.5 · EU 43 · CM / JP 27 |
| 9.5 | 9.5 | not published | UK 9 · EU 43.5 · CM / JP 27.5 |
| 10 | 10 | not published | UK 9.5 · EU 44 · CM / JP 28 |
| 10.5 | 10.5 | not published | UK 10 · EU 44.5 · CM / JP 28.5 |
| 11 | 11 | not published | UK 10.5 · EU 45 · CM / JP 29 |
| 11.5 | 11.5 | not published | UK 11 · EU 46 · CM / JP 29.5 |
| 12 | 12 | not published | UK 11.5 · EU 46.5 · CM / JP 30 |
| 12.5 | 12.5 | not published | UK 12 · EU 47 · CM / JP 30.5 |
| 13 | 13 | not published | UK 12.5 · EU 48 · CM / JP 31 |
| 13.5 | 13 or 14 | not published | UK 12.5 · EU 48 · CM / JP 31 |
| 14 | 14 | not published | UK 13 · EU 49 · CM / JP 32 |
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
- Onitsuka Tiger size guide, read on 2026-09-25. Onitsuka Tiger on TrueToSize
- Merrell size guide, read on 2026-09-18. Merrell on TrueToSize