Child height predictor
Estimate your son's or daughter's adult height from the parents' heights (mid-parental height), with the likely range.
How tall will my child be?
Everything happens on your device: nothing is uploaded to the internet.
Available in: 
Child height predictor: what it is for
Choose boy or girl and type the parents' heights in centimeters. The calculator uses mid-parental height, the method pediatricians use: the average of the parents' heights, plus 6.5 cm for boys or minus 6.5 cm for girls, with a range of about 8.5 cm up or down.
It is a genetic estimate: nutrition, sleep and health also count, and the pediatrician follows growth with the charts.
How to use
- Choose boy or girl.
- Type the father's and mother's height.
- See the estimated height and range.
When to use it
- Satisfy your curiosity about your baby's height.
- Compare with growth at checkups.
- Understand the target height your pediatrician mentions.
Frequently asked questions
How is it calculated?
With the mid-parental height used by pediatricians: for boys, (father's height + mother's height + 13) ÷ 2; for girls, (father's height + mother's height − 13) ÷ 2, in centimeters. Most people end up within about 8.5 cm (3.3 in) above or below that value.
Is the result guaranteed?
No. It is a genetic estimate. Nutrition, sleep, health, physical activity and the age puberty starts also play a part. Growth is followed by the pediatrician with growth charts.
Is it really free?
Yes, 100% free. No sign-up, no subscription and no usage limits. All Tools123 tools are free and run right in your browser.