Hat size

Hat sizes are determined by measuring the circumference of a person's head about 1 centimetre (1⁄2 in) above the ears.

From

is equal to

To

Chart

Unit
Adult size
Children size
Centimeters
Inches
US size
UK size

Size
XXXXS	XXXS	XXXS	XXS	XXS	XS	XS	S	S	M	M	L	L	XL	XL	XXL	XXL	XXXL	XXXL
XS	XS	S	S	M	M	L	L	XL	XL
47	48	49	50	51	52	53	54	55	56	57	58	59	60	61	62	63	64	65
18 1/2	18 7/8	19 1/4	19 5/8	20 1/8	20 1/2	20 7/8	21 1/4	21 5/8	22	22 1/2	22 7/8	23 1/4	23 5/8	24	24 1/2	24 7/8	25 1/4	25 5/8
5 7/8	6	6 1/8	6 1/4	6 3/8	6 1/2	6 5/8	6 3/4	6 7/8	7	7 1/8	7 1/4	7 3/8	7 1/2	7 5/8	7 3/4	7 7/8	8	8 1/8
5 3/4	5 7/8	6	6 1/8	6 1/4	6 3/8	6 1/2	6 5/8	6 3/4	6 7/8	7	7 1/8	7 1/4	7 3/8	7 1/2	7 5/8	7 3/4	7 7/8	8

Settings