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On to Dr. Martens Shoe Size Conversion
Switching from On to Dr. Martens? On runs true to size and Dr. Martens runs large, so the size you order changes. Here's the full chart.
On runs 0.5 size larger than Dr. Martens, so you may need to size down when switching.
Size up 0.5 moving to Dr. Martens
Dr. Martens runs smaller — order half a size larger than your On size.
Find your On size on the left, read across for Dr. Martens:
| On size | Dr. Martens size | UK | EU | Foot (cm) |
|---|---|---|---|---|
| 6.5 | 6 | 5.5 | 37 | 23.5 |
| 6.5 | 6 | 5.5 | 37.5 | 23.9 |
| 7 | 6.5 | 6 | 38 | 24.3 |
| 7.5 | 7 | 6.5 | 38.5 | 24.7 |
| 8 | 7.5 | 7 | 39.5 | 25.1 |
| 8 | 7.5 | 7 | 40 | 25.5 |
| 8.5 | 8 | 7.5 | 41 | 25.9 |
| 9 | 8.5 | 8 | 41.5 | 26.3 |
| 9.5 | 9 | 8.5 | 42.5 | 26.7 |
| 10 | 9.5 | 9 | 43 | 27.1 |
| 10.5 | 10 | 9.5 | 43.5 | 27.5 |
| 11 | 10.5 | 10 | 44 | 27.9 |
| 11.5 | 11 | 10.5 | 44.5 | 28.3 |
| 12 | 11.5 | 11 | 45.5 | 28.7 |
| 12.5 | 12 | 11.5 | 46 | 29.1 |
| 13 | 12.5 | 12 | 47 | 29.5 |
| 13.5 | 13 | 12.5 | 47.5 | 29.9 |
| 14 | 13.5 | 13 | 48 | 30.3 |
| 14 | 13.5 | 13 | 48.5 | 30.7 |
| 14.5 | 14 | 13.5 | 49 | 31.1 |
| 15 | 14.5 | 14 | 49.5 | 31.5 |
⚠️ Fit varies by model. On (On Running) runs true to size for most, with a snug, performance fit. Dr. Martens runs about half to a full size large and has no half sizes — size down to the nearest whole.
Dr. Martens to On → · On chart · Dr. Martens chart · Brand finder
What is a On 10.5 in Dr. Martens?
A On 10.5 is about a Dr. Martens 10 — they share a foot length of roughly 27.5 cm (UK 9.5, EU 43.5).
Do On and Dr. Martens fit the same?
Not quite — Dr. Martens runs about 0.5 size smaller than On.
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