Predict a child's adult height from parent heights using the mid-parental height formula — with the ±2 standard deviation range, percentile context, and current child height tracking.
Enter both biological parents' heights
Child's sex and current height (optional)
Common parent height combinations
Predicted Height
About Mid-Parental Height
The mid-parental height method predicts a child's adult height using both parents' heights. The ±2 SD range (about ±4 in) captures ~95% of children.
Genetics accounts for ~80% of height variation. Nutrition, sleep, and health contribute the remaining ~20%.
Predictions are most accurate after puberty. See a pediatrician for clinical assessment.
US Average Heights