Child Height Predictor
Predict your child's approximate adult height.
📐 Mid-Parental Height Method — Boy: (Father + Mother + 13) ÷ 2 · Girl: (Father + Mother − 13) ÷ 2, ± 8.5 cm typical range.
A child's adult height is primarily determined by genetics — specifically, the heights of both parents. The Mid-Parental Height (MPH) method, used by paediatricians worldwide, estimates a child's predicted adult height based on both parents' heights. While the actual adult height will fall within a range (MPH ± 8.5 cm for 95% of children), this prediction is valuable for tracking whether a child's growth is on an expected trajectory and identifying potential growth concerns early.
📋 How to Use This Calculator
Enter both parents' heights in cm (or feet/inches). Select the child's sex. The calculator computes the Mid-Parental Height and shows the predicted adult height range (MPH ± 8.5 cm) within which 95% of children with these parents will fall. It also shows the expected adult height trajectory if you input the child's current age and height, comparing against the CDC/WHO growth charts.
💡 Key Facts & Information
Mid-Parental Height formula: For boys: ((Father's height + Mother's height + 13) / 2). For girls: ((Father's height + Mother's height − 13) / 2). The ±8.5 cm range (±2 standard deviations) captures 95% of children. Factors that can alter height potential: chronic illness during childhood (particularly affecting the first 3 years), severe malnutrition, hormonal disorders (growth hormone deficiency, hypothyroidism, precocious puberty), and genetic conditions. In India, secular trend data shows average heights increasing by approximately 1 cm per decade due to improved nutrition — today's children are taller than their parents' generation on average. Peak height velocity occurs during puberty: boys typically grow 8–13 cm/year; girls 6–11 cm/year.