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Science-based height calculator / adult height predictor, which doubles as a height conversion calculator (cm to ft, feet to cm, etc.). Accurately predict a child's adult height and learn how tall it will be when it grows up.
Calculate your height in cm or feet and inches using our height converter and chart, with conversion for imperial and US units to metric units.
The average height of a 10-year-old girl is 138.6 cm (4 ft 6), while for boys, it is 138.4 (also 4 ft 6). The reason for this similarity is that, at a population level, puberty hasn't begun to cause growth spurts yet, and both sexes are the same height until sexual differences occur during puberty.
This free height calculator predicts a child's adult height based on linear regression analysis. It can also convert between different units of height.
What is the average height of a child in the UK? A child’s height can vary a lot. One child can be quite a bit taller than the average height, whereas another child may be shorter. Children often go through growth spurts, and then tend to grow slowly in height when they get older.
Add 2.5 inches (7.6 cm) to the average height of the boy’s parents or subtract 2.5 inches (7.6 cm) from the parents' average height for the girl. We use this strategy in the second calculator above. Another quick method uses the child's height at age 2 for a boy or 18 months for a girl.
Height Calculator or Height Predictor for determining adult height, Khamis-Roche Method. How tall will I be? How tall will my child be? Height calculator boys girls all ages.
