Average wrist circumference, by age

Age (years) Girls Boys
mm
8 137.83 141.48
9 140.33 145.01
10 144.27 148.56
11 147.82 150.34
12 149.30 156.04
13 151.70 161.01
14 152.48 163.82
15 153.19 165.44
16 153.27 169.43
17 154.85 173.87
18 151.79 169.20
19 146.59 176.16
Notes: The wrist circumference was measured in millimetres and not in centimetres like the other body measurements. There are too few students below 8 years of age or older than 19 to calculate a meaningful average for these groups.
Source: Statistics Canada, Census at School, 2006/2007.