How Tall Will My Child Be?

Child Height Predictor

Curious how tall your child may be when they grow up? Of course, nobody can predict the future perfectly, but modern growth formulas can give a pretty close estimate of your child's future adult height.

This calculator helps estimate how tall your child may be as an adult using current measurements and parents' height information. Sometimes the results end up surprisingly close to reality — especially when a child follows average growth patterns for their age. But every child grows differently: some shoot up early, some later, and some seem to grow several inches almost overnight.

Genetics play a big role in future height, but they're not the only factor. Sleep, nutrition, physical activity, overall health, and even the timing of puberty can all influence how a child grows over time.

This calculator is designed for children ages 4 and older.

How Future Height Is Estimated

There are several popular ways to roughly estimate a child's future adult height.

One of the best-known methods uses a child's current height and weight, age, sex, and parents' height information. This approach is considered one of the more accurate ways to estimate adult height without medical testing.

There are also simpler "at-home" methods that many parents use just for fun. For example, one common trick is to double a boy's height at age 2 to get a rough idea of his future adult height. For girls, a similar estimate is sometimes based on height at 18 months. These methods aren't considered highly accurate, but they can still be fun to try.

Another popular approach is simply looking at the parents' height. In many cases, children end up somewhere "in between" their mom and dad, although real-life growth can vary quite a bit.

Of course, no calculator can predict a child's future height with 100% accuracy — but it can provide a fun and fairly realistic estimate of how tall your child may become one day.

Important

This calculator is intended for informational and entertainment purposes only and does not guarantee your child's future adult height. If you have concerns about your child's growth or development, talk with your pediatrician or healthcare provider.