Predict your child's adult height using evidence-based formulas like mid-parental height, Khamis-Roche, and growth charts. Fast, free, and personalized.
Medical Disclaimer: This tool provides general educational estimates. For clinical concerns, consult a pediatrician or endocrinologist.
This height predictor uses the mid-parental height method (Tanner method) which is widely used in pediatric practice. The calculation accounts for:
Note: This is an estimate only. Actual adult height can be affected by nutrition, health conditions, and other environmental factors. The prediction is most accurate for children who are not experiencing early or delayed puberty.
For children under 4 years old, predictions are less reliable. The margin of error is typically ±5 cm (±2 inches).
Curious about how accurate height prediction methods really are? Read our analysis of height prediction methods →
Follow these steps to predict a child's potential adult height:
The calculator provides:
The calculator combines two scientific approaches:
For the most accurate clinical prediction, pediatricians may also use bone age X-rays and specialized growth charts, which are beyond the scope of this calculator.
Most predictions using mid-parental height or Khamis-Roche are accurate within 5-8 cm (2-3 inches). However, actual height is influenced by genetics, hormones, nutrition, and other environmental factors. The prediction is most reliable for children following normal growth patterns without early or delayed puberty.
It's a non-invasive method developed by pediatric researchers that uses age, sex, weight, height, and parent heights to estimate adult stature without X-rays. This method is best used for children age 4 and older and has been validated in clinical studies. Our calculator incorporates principles from this method.
Yes. Bone age (skeletal maturity) can significantly improve prediction accuracy, but this requires X-rays that can only be ordered by a healthcare provider. This calculator uses non-invasive data only. If you suspect growth delays or early maturation, consult a pediatrician.
Different calculators may use varying formulas or emphasis on different factors. Some focus purely on parental heights, while others might weigh current height percentiles more heavily. Our calculator balances genetic potential with current growth trajectory for more comprehensive estimates.
Proper nutrition and regular physical activity help children achieve their genetic height potential, but they won't exceed it significantly. Severe malnutrition or chronic illness can prevent a child from reaching their genetic height potential, but extra nutrition beyond what's needed for normal growth won't make a child taller than their genetic programming.