Darn Tough Sock Sizing

Men's Socks
Sock Size Men US Women US* Euro UK
XS 2.5-5 4.5-7 35-37.5 2.5-4.5
S 5.5-7.5 7.5-9.5 38-40.5 5-7
M 8-9.5 10-11.5 41-42.5 7.5-9
L 10-12 12-14 43-45.5 9.5-11.5
XL 12.5-14.5 — 46-49.5 12-14
XXL 15-17 — 50-53 15-16
Women's Socks
Sock Size Women US Men US* Euro UK
S 4.5-7 2.5-5 35-37.5 2.5-4.5
M 7.5-9.5 5.5-7.5 38-40.5 5-7
L 10-11.5 8-9.5 41-42.5 7.5-9

 

Kid's Socks
Sock Size Kids' US Euro UK
S 9-11.5 26.5-29.5 8.5-11
M 12-2.5 30-34.5 11.5-2
L 3-6 35-39 2.5-5.5