Darn Tough Size Chart
Men's
| Size | S | M | L | XL | XXL |
| US | 5.5-7.5 | 8-9.5 | 10-12 | 12.5-14.5 | 15-17 |
| Euro | 38-40/41 | 41-42/43 | 43-45 | 46-49/50 | 50-53 |
| UK | 5-7 | 7.5-9 | 9.5-11.5 | 12-14 | 14-16 |
Women's
| Size | S | M | L |
| US | 4.5-7 | 7.5-9.5 | 10-11.5 |
| Euro | 35-37/38 | 38-40/41 | 41-42/43 |
| UK | 2.5-5 | 5-7 | 7.5-9 |
Kids
| Size | S | M | L |
| US Kids | 9-11.5 | 12-2.5 | 3-6 |