Hiking boots are sized by foot length, but you typically go a half size up from street shoes to leave room for thick socks and downhill toe slide.
| Your foot length | Recommended size |
|---|---|
| foot 23.5 cm (US M 5.5 / W 7) | US M 5.5 / W 7 |
| foot 24.5 cm (US M 6.5 / W 8) | US M 6.5 / W 8 |
| foot 25.5 cm (US M 7.5 / W 9) | US M 7.5 / W 9 |
| foot 26.5 cm (US M 8.5 / W 10) | US M 8.5 / W 10 |
| foot 27.5 cm (US M 9.5 / W 11) | US M 9.5 / W 11 |
| foot 28.5 cm (US M 10.5) | US M 10.5 |
| foot 29.5 cm (US M 11.5) | US M 11.5 |
| Long descents / backpacking | Size up half a size to protect toes. |
| Wide feet | Choose a wide last rather than sizing up. |
| Thick winter socks | Add half a size for sock volume. |