Size Chart
Allbirds Size Chart
Tree Dashers & Tree Flyers come in half sizes to ensure the perfect fit for your run. They fit true to size for most customers. If you have wide feet or prefer a roomier fit to accommodate toe splay, we suggest going up a half size. For extra wide feet, go up a whole size.
Did you know that our shoes are actually unisex? You can easily cross over to find shoes in your size.
Here’s how it works:
If you wear a men’s size 7-7.5, try a women’s size 8-8.5.
If you wear a women’s size 11.5-12, try a men’s size 10.5-11.
Men's
| US | UK | EU | cm |
|---|---|---|---|
| 8 | 7 | 41 | 26 |
| 8.5 | 7.5 | 41.5 | 26.5 |
| 9 | 8 | 42 | 27 |
| 9.5 | 8.5 | 42.5 | 27.5 |
| 10 | 9 | 43 | 28 |
| 10.5 | 9.5 | 43.5 | 28.5 |
| 11 | 10 | 44 | 29 |
| 11.5 | 10.5 | 44.5 | 29.5 |
| 12 | 11 | 45 | 30 |
| 12.5 | 11.5 | 45.5 | 30.5 |
| 13 | 12 | 46 | 31 |
| 13.5 | 12.5 | 46.5 | 31.5 |
| 14 | 13 | 47 | 32 |
Women's
| US | UK | EU | cm |
|---|---|---|---|
| 5 | 2 - 2.5 | 35 | 22 |
| 5.5 | 2.5 | 35.5 | 22.5 |
| 6 | 3 - 3.5 | 36 | 23 |
| 6.5 | 3.5 | 36.5 | 23.5 |
| 7 | 4 - 4.5 | 37 | 24 |
| 7.5 | 4.5 | 37.5 | 24.5 |
| 8 | 5 - 5.5 | 38 | 25 |
| 8.5 | 5.5 | 38.5 | 25.5 |
| 9 | 6 - 6.5 | 39 | 26 |
| 9.5 | 6.5 | 39.5 | 26.5 |
| 10 | 7 - 7.5 | 40 | 27 |
| 10.5 | 7.5 | 40.5 | 27.5 |
| 11 | 8 - 8.5 | 41 | 28 |
Still debating? No worries—our hassle-free 30-day return policy allows you to try us on for size and find the perfect pair.