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Allbirds to On Shoe Size Conversion
Switching from Allbirds to On? Allbirds runs true to size and On runs true to size, so the size you order changes. Here's the full chart.
Because Allbirds and On share the same fit tendency, your size carries straight across: a Allbirds 9 is a On 9.
Allbirds and On run the same
Order the same number — a Allbirds 9 is a On 9.
Find your Allbirds size on the left, read across for On:
| Allbirds size | On 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. Allbirds runs true to size; half sizes are rounded, so go to the nearest whole. On (On Running) runs true to size for most, with a snug, performance fit.
On to Allbirds → · Allbirds chart · On chart · Brand finder
What is a Allbirds 9 in On?
A Allbirds 9 is about a On 9 — they share a foot length of roughly 26.3 cm (UK 8, EU 41.5).
Do Allbirds and On fit the same?
Roughly, yes — both run true to size, so the same number fits.
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