Average arm span, by age

 Age Average Arm Span
  cm
8 or younger 128.5
9 137.0
10 143.8
11 151.0
12 157.2
13 162.7
14 163.3
15 165.6
16 167.9
17 170.5
18 168.7
19 or older 170.7

Source: Census at School Canada, 2021-2022