Not sure about hat sizes and headsize measurements? Use this handy chart to make sense of it all.

Hat Size
Hat Size
20½” 52cm 6⅝
21″ 54cm 6⅝
21½” 55cm 6⅞
22″ 56cm 7 6⅞
22½” 57cm 7⅛ 7
23″ 59cm 7⅛
23½” 60cm 7⅜
24″ 62cm 7⅜
24½” 63cm 7⅝
25″ 64cm 7⅝
25½” 65cm 7⅞
26″ 66cm 8 7⅞

How to Measure Head

Place the string or tape around your head across the mid-forehead through the fullest part at back of head, completely circling your head. Hold the tape firmly, but not too tightly. This is the basic measurement for where the hat will sit. If your measurement falls between sizes, choose the next largest size. Keep in mind special types of headwear, for example a percher or fascinator, will require different measurements.