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Clarks to Allbirds Shoe Size Conversion
Switching from Clarks to Allbirds? Clarks runs large and Allbirds runs true to size, 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 down 0.5 moving to Allbirds
Allbirds runs larger — order half a size smaller than your Clarks size.
Find your Clarks size on the left, read across for Allbirds:
| Clarks size | Allbirds size | UK | EU | Foot (cm) |
|---|---|---|---|---|
| 6.5 | 7 | 5.5 | 37 | 23.5 |
| 6.5 | 7 | 5.5 | 37.5 | 23.9 |
| 7 | 7.5 | 6 | 38 | 24.3 |
| 7.5 | 8 | 6.5 | 38.5 | 24.7 |
| 8 | 8.5 | 7 | 39.5 | 25.1 |
| 8 | 8.5 | 7 | 40 | 25.5 |
| 8.5 | 9 | 7.5 | 41 | 25.9 |
| 9 | 9.5 | 8 | 41.5 | 26.3 |
| 9.5 | 10 | 8.5 | 42.5 | 26.7 |
| 10 | 10.5 | 9 | 43 | 27.1 |
| 10.5 | 11 | 9.5 | 43.5 | 27.5 |
| 11 | 11.5 | 10 | 44 | 27.9 |
| 11.5 | 12 | 10.5 | 44.5 | 28.3 |
| 12 | 12.5 | 11 | 45.5 | 28.7 |
| 12.5 | 13 | 11.5 | 46 | 29.1 |
| 13 | 13.5 | 12 | 47 | 29.5 |
| 13.5 | 14 | 12.5 | 47.5 | 29.9 |
| 14 | 14.5 | 13 | 48 | 30.3 |
| 14 | 14.5 | 13 | 48.5 | 30.7 |
| 14.5 | 15 | 13.5 | 49 | 31.1 |
| 15 | 15.5 | 14 | 49.5 | 31.5 |
⚠️ Fit varies by model. Clarks runs about half a size large for many styles; wide fittings are available. Allbirds runs true to size; half sizes are rounded, so go to the nearest whole.
Allbirds to Clarks → · Clarks chart · Allbirds chart · Brand finder
What is a Clarks 10.5 in Allbirds?
A Clarks 10.5 is about a Allbirds 11 — they share a foot length of roughly 27.5 cm (UK 9.5, EU 43.5).
Do Clarks and Allbirds fit the same?
Not quite — Allbirds runs about 0.5 size larger than Clarks.
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