How to Determine Your Hat Size With a tape measure, measure your head exactly where the hat will sit. Measure around your head about 1/8″ above your ear, across the mid-forehead, circling your head firmly, but not too tight. If your measurement falls between sizes, choose the next largest size.
HATS
inches Centimeters
61/8 X-Small 19 3/8 49.2
6 1/4 19 1/2 49.5
6 3/8 20 1/4 51.4
6 1/2 20 5/8 52.4
6 5/8 21 53.3
6 3/4 Small 21 1/2 54.6
6 7/8 21 7/8 55.6
7 MEDIUM 22 1/4 56.5
7 1/8 22 5/8 57.5
7 1/4 LARGE 23 58.4
7 3/8 23 3/8 59.4
7 1/2 X-LARGE 23 3/4 60.3
7 5/8 24 60.9
7 3/4 2XL 24 1/2 62.2
7 7/8 25 63.5
8 3XL 25 1/2 64.8