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Pediatric Growth ScienceKhamis-Roche & Mid-Parental Engine

Height Calculator

Predict a child's future adult height using clinical linear regression (Khamis-Roche method) and parental genetics (Tanner mid-parental method). Supports US and Metric units with unit conversion.

Modify the values and click the calculate button to use

Child Growth & Parental Genetics

Child Information
ftin
lbs
Biological Parents' Heights
ftin
ftin
Adult Height Prediction

Predicted Height: 5 ft 10.7 in(179.6 cm)

Normal Expected Range: 5 ft 8.7 in to 6 ft 0.7 in (174.6 cm to 184.6 cm)
Khamis-Roche Method
5 ft 10.7 in
±2.0 inches accuracy
Mid-Parental Target
5 ft 10 in
Based on genetics only
Growth Percentile
60th %tile
CDC Adult Standard
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How Pediatric Height Prediction Works

Pediatricians utilize two primary non-invasive methodologies to predict adult stature in children:

  1. Khamis-Roche Method: Developed at Wright State University, this method utilizes linear regression models incorporating the child's current age, height, weight, and both biological parents' heights without requiring skeletal bone-age X-rays. It boasts a margin of error of approximately $\pm 2$ inches.
  2. Tanner Mid-Parental Method: A genetic baseline calculation based solely on biological parents' heights, ideal for unborn children and infants under 4 years old.

Mid-Parental Height Formulas (Tanner Method)

For Boys 👦

Height = (Father's Height + Mother's Height + 5 in) ÷ 2

Metric: (Father's Height + Mother's Height + 13 cm) ÷ 2

For Girls 👧

Height = (Father's Height + Mother's Height - 5 in) ÷ 2

Metric: (Father's Height + Mother's Height - 13 cm) ÷ 2