Whitmore Caps · Sizing

The cap that fits

Our whole size range spans just over three inches — half an inch is already a different size. That's why a tape measure is worth it.

Find your size

Enter your head measurement and we'll tell you which size to choose.

22 5/8 in
Your size: M

Size chart

Head circumference, measured where the cap sits.

SizeInchesCentimetersUS hat size
XS20 7/8 – 21 1/453 – 546 5/8 – 6 3/4
S21 5/8 – 2255 – 566 7/8 – 7
M22 3/8 – 22 7/857 – 587 1/8 – 7 1/4
L23 1/4 – 23 5/859 – 607 3/8 – 7 1/2
XL24 – 24 3/861 – 627 5/8 – 7 3/4

How to measure

  1. Grab a soft measuring tape. No tape? Use a piece of string, then lay it against a ruler.
  2. Wrap it just above your ears and around the widest part at the back of your head — not across your forehead or eyebrows.
  3. Pull it snug without pressing in. You shouldn't be able to slide a finger underneath.
  4. Round up. If you're between two sizes, choose the larger one — a cap barely stretches.

Guessing usually puts you off by 1/2 to 3/4 inch — a full size. Measuring takes a minute and saves you a return.