Fit guide

Size Chart

Use the conversion table below to match your head measurement to the closest Prohats size.

Hat size conversions by alpha size, numbered hat size, inches, and centimeters.
Alpha Size Extra Small Small Medium Large Extra Large Extra Extra Large
Hat Size 6 3/8 6 1/2 6 5/8 6 3/4 6 7/8 7 7 1/8 7 1/2 7 3/8 7 1/2 7 5/8 7 3/4 7 7/8 8
Inches 20 1/4 20 5/8 21 21 1/2 21 7/8 22 1/4 22 5/8 23 23 3/8 23 3/4 24 24 1/2 25 25 1/2
Metric 51 52 53 54 55 56 57 58 59 60 61 62 63 64

The table above provides a conversion of our hat sizes in inches and centimeters.

How to determine hat size:

  1. 1. Measure around your head about 3/4 inch above your ears, where the hat will sit.
  2. 2. Keep the measuring tape level and snug, without pulling tight.
  3. 3. If your measurement falls between two numbered sizes, choose the larger size.

Snapback Cap Reference
Hat sizing measurement reference diagram

No measuring tape? A convenient option involves using a snapback hat and matching your preferred fit to the provided chart.

If your measurement falls in between sizes, opt for the larger size. Adding a bit of padding to the sweatband can always help you attain that ideal fit.