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At what age does the average human reach half their full adult height?

Question #149033. Asked by gmackematix.
Last updated Oct 14 2022.
Originally posted Oct 13 2022 10:15 PM.

WesleyCrusher star
Answer has 2 votes
WesleyCrusher star
14 year member
158 replies avatar

Answer has 2 votes.
Just over two years of age. The average height of an adult American male is 1.77 meters, so half that would be 88.5 cm. This level is reached at about 2 years 3 months. For females, who grow at similar rates as small children but have a slightly lower end height, the threshold will be reached a little earlier.

Three quarters (134 cm for boys) is reached around age 9.

The numbers are taken from this chart:


Oct 14 2022, 8:10 AM
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