Hat Sizing Guide

You can measure your head with a tape measure and take measurements in centimetres.

Wrap the tape measure around half a centimetre above the top of your ear, not on your ear. Pull the tape snug but not tight.

If in doubt, always choose a size up where available rather than a size down. For example, for 55.5cm, choose a Medium.

If you own other hats with different hat size labels, the following is a useful conversion table:

Inches	Centimetres	Hat Size Number (UK)	Tom Smarte Size
21-1/4”	54	6-3/4	Small
21-5/8”	55	6-7/8	Small
22”	56	7	Medium
22-3/8”	57	7-1/8	Medium
22-3/4”	58	7-1/4	Large
23-1/8”	59	7-3/8	Large
23-5/8”	60	7-1/2	X-Large
24”	61	7-5/8	X-Large
24-3/8”	62	7-3/4	XX-Large
24-3/4”	63	7-7/8	XX-Large