Average wrist circumference in millimetres, by age

Age¹	Girls	Boys
Average wrist circumference in millimetres, by age
years	mm
8	141.87	150.43
9	143.37	150.17
10	146.87	151.91
11	151.50	155.99
12	154.16	161.38
13	154.55	164.90
14	153.98	166.66
15	152.75	165.81
16	152.36	169.23
17	150.59	167.63
18	151.81	167.28
19	147.64	166.11
1. There are too few students below age 8 and above age 19 to compute a meaningful average. Source: Census at School – Canada, 2004/05.