Height Prediction Formula

The height that a child grows to as an adult is influenced by a number of factors, such as genetics (their parents height), sex (are they male or female), and overall health and nutrition. It is believed that genetics accounts for 70% of the adult height, while 30% comes from environmental factors, such as health, nutrition and exercise.

Although there is no way to predict the future to see how tall a child will become, the following height calculators can be used to give you some idea.

See more about measuring baby length and standing height.

Simple and Easy (but inaccurate?)

There are a couple of simple methods used to estimate a child's height potential that are commonly used but less scientific and less accurate than the formula listed below.

  1. estimate adult height by adding the parents' heights together, then dividing this by two, then adding three inches (7.6 cm) for a boy or subtracting three for a girl.
  2. estimate of your child's height when they reach adulthood by taking their height at age 2 and doubling it.

height measurementUsing Formula


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Credit: thanks to Mohamad Motevalli for providing the majority of this information.

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