Age (years) 50th percentile height for boys (inches and centimeters)
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13 61.4 in. (156 cm)
14 64.6 in. (164 cm)
15 66.9 in. (170 cm)
16 68.3 in. (173.5 cm)
How tall will I be at 12?
How Tall Should a 12 Year Old Be? We can only speak to national average heights here in North America, whereby, a 12 year old girl would be between 137 cm to 162 cm tall (4-1/2 to 5-1/3 feet). A 12 year old boy should be between 137 cm to 160 cm tall (4-1/2 to 5-1/4 feet).
How tall are u supposed to be at 13?
Age (years) 50th percentile height for girls (inches and centimeters)
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11 56.7 in. (144 cm)
12 59.4 in. (151 cm)
13 61.8 in. (157 cm)
14 63.2 in. (160.5 cm)