Hat Size Calculator

Get the right fit. Convert your head measurement into official US, UK, and European hat sizes instantly.

Measure around your head, just above your ears.
Primary Size (US)
7 1/8
7 UK Size
57 European
M/L General

How to measure your head

I genuinely believe that measuring for a hat is harder than measuring for a suit. You want to place the tape measure about 1/2 inch above your ears and across the middle of your forehead. Don't pull the tape too tight! A hat that's slightly too big is much better than one that gives you a headache.

Between sizes? If you fall between two sizes, always go for the larger one. You can always add a small piece of foam or "hat reducer" tape inside the sweatband to make it snug.

Size Conversion Table:

  • Small: 6 3/4 – 6 7/8 (US)
  • Medium: 7 – 7 1/8 (US)
  • Large: 7 1/4 – 7 3/8 (US)
  • X-Large: 7 1/2 – 7 5/8 (US)