Average wrist circumference, by age

 

Age Girls  Boys
mm mm
8 132.98 139.46
9 141.99 147.31
10 144.32 150.12
11 147.80 152.65
12 149.99 154.46
13 152.87 162.04
14 151.83 162.50
15 152.69 168.64
16 151.70 170.45
17 152.70 169.59
18 152.91 170.05
19 146.17 170.82