Child Height Predictor

Estimate your child’s likely adult height using mom and dad's height and child’s gender. An easy, evidence-based tool for parents and caregivers.

Metric (cm) or click below for example

What does this Child Height Predictor do?

This tool estimates your child’s possible adult height using the widely-recognized mid-parental height formula. Simply enter the heights of both parents and select your child’s gender to instantly get a realistic height prediction, with an uncertainty range.

How to use the Height Predictor

  1. Enter the father’s height and mother’s height in centimeters (cm). Example: 179.2 and 165.7
  2. Select the child’s gender as boy or girl.
  3. Click Predict Height. The predicted adult height will be shown instantly below, alongside the likely range.
  4. Use the Copy Result button to save the estimate, if needed.

Example Calculation

A family with a father who is 179.2 cm and a mother who is 165.7 cm wants to estimate the expected adult height of their daughter:

Assumptions, Method, and Limitations

Frequently Asked Questions

How accurate is this height prediction?
For most healthy children, the formula predicts actual adult height within about ±6.5 cm (2.5 in). However, genetics, health, and environment can cause variation.
Do I need to enter heights in centimeters?
Yes, enter heights in centimeters for best accuracy. You can convert feet/inches to centimeters by multiplying inches by 2.54 or using an online converter.
Does it work for all children?
The formula is most accurate for healthy children and average parental heights. Children with very early/late puberty, chronic illness, or exceptional growth patterns may see bigger differences.
Is this a replacement for a doctor’s advice?
No—this calculator is for general informational use only and not a substitute for personalized medical or growth advice from a doctor.