Hat Sizing Chart
Inches
US size
49
cm = 19.29 inches
6 1/8
50
cm = 19.68 inches
6 1/4
51
cm = 20.08 inches
6 3/8
52
cm = 20.47 inches
6 1/2
53
cm = 20.87 inches
6 5/8
54
cm = 21.26 inches
6 3/4
55
cm = 21.65 inches
6 7/8
56
cm = 22.05 inches
7
57
cm = 22.44 inches
7 1/8
58 cm = 22.83 inches 7 1/4
59
cm = 23.23 inches 7 3/8
60
cm = 23.62 inches 7 1/2
61
cm = 24.02 inches 7 5/8