Adjust tape measure around head at a point level with the center of the
forehead.
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Hat size Inches around head
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5⅝ 18¾
6 19
6⅛ 19⅜
6¼ 19¾
6⅜ 20¼
6½ 20¾
6⅝ 21
6¾ 21½
6⅝ 21⅝
7 22¼
7⅛ 22½
7¼ 23
7⅜ 23⅜
7½ 23¾
7⅝ 24
7¾ 24½
7⅝ 25
8 25¼
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Boys’ sizes run from 5⅝ to 7; mens’ from 6¾; the largest size commonly
carried in stock is 7¾, all above that being called extra sizes.