Use these size charts to convert Allbirds shoe sizes between EU, US and UK. All measurements are in millimeters (mm).
Allbirds Size Charts & Conversion
Convert Allbirds sizes between EU, US and UK
Frequently Asked Questions About Allbirds Sizing
Do all Allbirds shoes fit the same?
No, Allbirds sizing varies by model. Check our model-specific guides for exact fit information on each style.
How do I convert Allbirds sizes between EU, US and UK?
Use our Allbirds size conversion charts above. Allbirds uses standard European sizing - see the tables for exact EU to US and UK conversions.
Which Allbirds models run small or large?
Allbirds fit varies by model. Some styles run small, others run large. Browse our model-specific sizing guides to see exact fit adjustments for each Allbirds shoe.
Need Help Finding Your Size?
Get a size recommendation based on the shoes you already own. No guessing. No measuring. Just a better fit.
Allbirds - Whole Size - Male
Unsure about your size? Find your size or check out our detailed guide on how to measure your feet.
Fit Type: Runs large
| Shoe Length (mm) | EU |
|---|---|
| 245 | 41 |
| 255 | 42 |
| 265 | 43 |
| 275 | 44 |
| 285 | 45 |
| 295 | 46 |
| 305 | 47 |
Based On: Allbirds :: Official :: Whole Size :: Male
Last updated: 2025-09-05 06:35:39
Allbirds - Half Size - Male
Unsure about your size? Find your size or check out our detailed guide on how to measure your feet.
Fit Type: Runs large
| Shoe Length (mm) | EU |
|---|---|
| 253 | 41 |
| 258 | 41.5 |
| 263 | 42 |
| 268 | 42.5 |
| 273 | 43 |
| 278 | 43.5 |
| 283 | 44 |
| 288 | 44.5 |
| 293 | 45 |
| 298 | 45.5 |
| 303 | 46 |
| 308 | 46.5 |
| 313 | 47 |
Based On: Allbirds :: Official :: Half Size :: Male
Last updated: 2025-09-05 06:35:39
Allbirds - Whole Size - Women
Unsure about your size? Find your size or check out our detailed guide on how to measure your feet.
Fit Type: Runs large
| Shoe Length (mm) | EU |
|---|---|
| 205 | 35 |
| 215 | 36 |
| 225 | 37 |
| 235 | 38 |
| 245 | 39 |
| 255 | 40 |
| 265 | 41 |
Based On: Allbirds :: Official :: Whole Size :: Women
Last updated: 2025-09-05 06:35:39
Allbirds - Half Size - Women
Unsure about your size? Find your size or check out our detailed guide on how to measure your feet.
Fit Type: Runs large
| Shoe Length (mm) | EU |
|---|---|
| 213 | 35 |
| 218 | 35.5 |
| 223 | 36 |
| 228 | 36.5 |
| 233 | 37 |
| 238 | 37.5 |
| 243 | 38 |
| 248 | 38.5 |
| 253 | 39 |
| 258 | 39.5 |
| 263 | 40 |
| 268 | 40.5 |
| 273 | 41 |
Based On: Allbirds :: Official :: Half Size :: Women
Last updated: 2025-09-05 06:35:39