Average arm span, by age

 Age Average Arm Span
  cm
8 or younger 150.4
9 138.6
10 144.2
11 149.8
12 155.8
13 162.2
14 164.4
15 163.3
16 167.4
17 170.6
18 170.8
19 or older 169.0

Source: Census at School Canada, 2019-2020