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On to Allbirds Shoe Size Conversion
Switching from On to Allbirds? On runs true to size and Allbirds runs true to size, so the size you order changes. Here's the full chart.
Because On and Allbirds share the same fit tendency, your size carries straight across: a On 9 is a Allbirds 9.
On and Allbirds run the same
Order the same number — a On 9 is a Allbirds 9.
Find your On size on the left, read across for Allbirds:
| On size | Allbirds size | UK | EU | Foot (cm) |
|---|---|---|---|---|
| 6.5 | 6.5 | 5.5 | 37 | 23.5 |
| 7 | 7 | 6 | 38 | 24.3 |
| 7.5 | 7.5 | 6.5 | 38.5 | 24.7 |
| 8 | 8 | 7 | 39.5 | 25.1 |
| 8.5 | 8.5 | 7.5 | 41 | 25.9 |
| 9 | 9 | 8 | 41.5 | 26.3 |
| 9.5 | 9.5 | 8.5 | 42.5 | 26.7 |
| 10 | 10 | 9 | 43 | 27.1 |
| 10.5 | 10.5 | 9.5 | 43.5 | 27.5 |
| 11 | 11 | 10 | 44 | 27.9 |
| 11.5 | 11.5 | 10.5 | 44.5 | 28.3 |
| 12 | 12 | 11 | 45.5 | 28.7 |
| 12.5 | 12.5 | 11.5 | 46 | 29.1 |
| 13 | 13 | 12 | 47 | 29.5 |
| 13.5 | 13.5 | 12.5 | 47.5 | 29.9 |
| 14 | 14 | 13 | 48 | 30.3 |
| 14.5 | 14.5 | 13.5 | 49 | 31.1 |
| 15 | 15 | 14 | 49.5 | 31.5 |
⚠️ Fit varies by model. On (On Running) runs true to size for most, with a snug, performance fit. Allbirds runs true to size; half sizes are rounded, so go to the nearest whole.
Allbirds to On → · On chart · Allbirds chart · Brand finder
What is a On 9 in Allbirds?
A On 9 is about a Allbirds 9 — they share a foot length of roughly 26.3 cm (UK 8, EU 41.5).
Do On and Allbirds fit the same?
Roughly, yes — both run true to size, so the same number fits.
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