Average arm span, by age

 Age Average Arm Span
  cm
8 or younger 133.7
9 140.5
10 143.5
11 149.1
12 155.3
13 161.6
14 164.2
15 165.3
16 167.1
17 168.5
18 165.1
19 or older 173.0

Source: Census at School Canada, 2020-2021