Standard Sizing Chart for Hats

Head sizes

Although it is preferable to work with actual measurements when knitting hats, this chart gives you a guide depending on the age required.

The circumference of the hat should measure about 2.5cm less than the actual head measurement. Simply run a tape measure from the forehead, about 2.5cm above the brows, and then around the bump behind the head (the tape will be on the diagonal). All measurements are in centimeters.

Age Circumference Height
Newborn - 1 month     32 15
1 to 3 months 34.5 17
3 to 6 months 37 18
6 to 9 months 38 18
9 to 12 months 39.5 18
12 to 18 months 41 19
18 to 24 months 43 19
2 to 5 years 45.5 20
5 to 10 years 48 22
Teenager 51 - 55 25
Women 55 - 60 28
Men 58 - 61 28-31