Predict a child's adult height using the Khamis-Roche method based on current height, weight, age, and parental heights. Also convert between different height units.
Height prediction involves estimating a child's adult height based on various factors including genetics, current growth patterns, and environmental influences. Our calculator uses scientifically-validated methods to provide accurate predictions for planning and health assessment purposes.
The most accurate predictions combine multiple data points including the child's current age, height, weight, and parental heights. The Khamis-Roche method, used in our detailed calculator, is widely recognized as one of the most reliable non-invasive prediction methods available.
| Method | Accuracy | Best Used For |
|---|---|---|
| Khamis-Roche Method | ±2.2 inches (5.6 cm) | Children 4-17 years old |
| Parental Height Average | ±4 inches (10 cm) | General estimates, unborn children |
| Growth Charts | ±3 inches (7.6 cm) | Tracking growth percentiles |
| Bone Age Analysis | ±1.8 inches (4.6 cm) | Medical assessments |
Genetic factors account for approximately 60-80% of a person's final adult height, making parental heights the strongest predictive factor. However, environmental influences including nutrition, health status, physical activity, and sleep patterns can significantly impact growth potential.
Growth occurs in two major phases: rapid growth during infancy and toddlerhood, followed by steady growth until the pubertal growth spurt. Understanding these phases helps in interpreting prediction results and identifying potential growth concerns early.
Children typically experience their fastest growth during the first two years of life, followed by a relatively steady growth rate of 2-3 inches per year. The pubertal growth spurt usually begins between ages 8-13 for girls and 9-14 for boys, adding approximately 8-12 inches to final height.
Growth plates typically close by age 16-18 for girls and 18-20 for boys, marking the end of vertical growth. Understanding this timeline helps parents and healthcare providers monitor normal development and identify when intervention might be beneficial.
While genetics largely determine height potential, ensuring optimal nutrition, regular physical activity, adequate sleep, and proper medical care can help children reach their maximum genetic potential. Deficiencies in these areas during critical growth periods may result in reduced final height.
Modern height calculators serve as valuable tools for parents, educators, and healthcare professionals in monitoring growth patterns, planning for the future, and identifying when additional evaluation might be warranted.