The genetic potential height predictor has a 68 percent chance of being within 2 inches and a 95 percent chance of being within 4 inches of this predicted height. ... While none of these height predictors is 100 percent accurate, they are interesting ways for you to gauge just how tall your kids might be.

Do height predictors work?

There's no proven way to predict a child's adult height. However, several formulas can provide a reasonable guess for child growth. Here's a popular example: Add the mother's height and the father's height in either inches or centimeters.

What is the most accurate height predictor?

Khamis-Roche method

The Khamis-Roche child height predictor calculates your child's future height by using parents' height, child's current height, child's current weight, and child's gender. It's the most accurate method of predicting a child's height without determining the skeletal age.