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Allbirds to Clarks Shoe Size Conversion
Switching from Allbirds to Clarks? Allbirds runs true to size and Clarks runs large, so the size you order changes. Here's the full chart.
Allbirds runs 0.5 size larger than Clarks, so you may need to size down when switching.
Size up 0.5 moving to Clarks
Clarks runs smaller — order half a size larger than your Allbirds size.
Find your Allbirds size on the left, read across for Clarks:
| Allbirds size | Clarks 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. Allbirds runs true to size; half sizes are rounded, so go to the nearest whole. Clarks runs about half a size large for many styles; wide fittings are available.
Clarks to Allbirds → · Allbirds chart · Clarks chart · Brand finder
What is a Allbirds 10.5 in Clarks?
A Allbirds 10.5 is about a Clarks 10 — they share a foot length of roughly 27.5 cm (UK 9.5, EU 43.5).
Do Allbirds and Clarks fit the same?
Not quite — Clarks runs about 0.5 size smaller than Allbirds.
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