Use these size charts to convert Altra shoe sizes between EU, US and UK. All measurements are in millimeters (mm).
Altra Size Charts & Conversion
Convert Altra sizes between EU, US and UK
Frequently Asked Questions About Altra Sizing
Do all Altra shoes fit the same?
No, Altra sizing varies by model. Check our model-specific guides for exact fit information on each style.
How do I convert Altra sizes between EU, US and UK?
Use our Altra size conversion charts above. Altra uses standard European sizing - see the tables for exact EU to US and UK conversions.
Which Altra models run small or large?
Altra fit varies by model. Some styles run small, others run large. Browse our model-specific sizing guides to see exact fit adjustments for each Altra shoe.
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Altra - Female
Unsure about your size? Find your size or check out our detailed guide on how to measure your feet.
Fit Type: True to size
| Foot Length (mm) | EU | US | Mondopoint | UK | Japan (cm) | China (mm) | Korea (mm) |
|---|---|---|---|---|---|---|---|
| 220 | 36 | 5.5 | 220 | 3.5 | 22 | 220 | 220 |
| 225 | 37 | 6 | 225 | 4 | 22.5 | 225 | 225 |
| 230 | 37.5 | 6.5 | 230 | 4.5 | 23 | 230 | 230 |
| 235 | 38 | 7 | 235 | 5 | 23.5 | 235 | 235 |
| 240 | 38.5 | 7.5 | 240 | 5.5 | 24 | 240 | 240 |
| 245 | 39 | 8 | 245 | 6 | 24.5 | 245 | 245 |
| 250 | 40 | 8.5 | 250 | 6.5 | 25 | 250 | 250 |
| 255 | 40.5 | 9 | 255 | 7 | 25.5 | 255 | 255 |
| 260 | 41 | 9.5 | 260 | 7.5 | 26 | 260 | 260 |
| 265 | 42 | 10 | 265 | 8 | 26.5 | 265 | 265 |
| 270 | 42.5 | 10.5 | 270 | 8.5 | 27 | 270 | 270 |
| 275 | 43 | 11 | 275 | 9 | 27.5 | 275 | 275 |
| 280 | 44 | 11.5 | 280 | 9.5 | 28 | 280 | 280 |
| 285 | 44.5 | 12 | 285 | 10 | 28.5 | 285 | 285 |
Based On: Altra - Female
Last updated: 2025-07-17 11:28:48
Altra - Male
Unsure about your size? Find your size or check out our detailed guide on how to measure your feet.
Fit Type: True to size
| Foot Length (mm) | EU | US | Mondopoint | UK | Japan (cm) | China (mm) | Korea (mm) |
|---|---|---|---|---|---|---|---|
| 250 | 40 | 7 | 250 | 6 | 25 | 250 | 250 |
| 255 | 40.5 | 7.5 | 255 | 6.5 | 25.5 | 255 | 255 |
| 260 | 41 | 8 | 260 | 7 | 26 | 260 | 260 |
| 265 | 42 | 8.5 | 265 | 7.5 | 26.5 | 265 | 265 |
| 270 | 42.5 | 9 | 270 | 8 | 27 | 270 | 270 |
| 275 | 43 | 9.5 | 275 | 8.5 | 27.5 | 275 | 275 |
| 280 | 44 | 10 | 280 | 9 | 28 | 280 | 280 |
| 285 | 44.5 | 10.5 | 285 | 9.5 | 28.5 | 285 | 285 |
| 290 | 45 | 11 | 290 | 10 | 29 | 290 | 290 |
| 295 | 46 | 11.5 | 295 | 10.5 | 29.5 | 295 | 295 |
| 300 | 46.5 | 12 | 300 | 11 | 30 | 300 | 300 |
| 305 | 47 | 12.5 | 305 | 11.5 | 30.5 | 305 | 305 |
| 310 | 48 | 13 | 310 | 12 | 31 | 310 | 310 |
| 320 | 49 | 14 | 320 | 13 | 32 | 320 | 320 |
| 330 | 50 | 15 | 330 | 14 | 33 | 330 | 330 |
| 340 | 51.5 | 16 | 340 | 15 | 34 | 340 | 340 |
Based On: Altra - Male
Last updated: 2025-07-17 11:28:48