Child & Teen BMI Calculator

Calculate BMI for children and teens aged 2-20 with age- and sex-specific percentile categories from the CDC.

πŸ§’ Child & Teen BMI

Results

BMI15.3
Percentile Range5th-50th
CategoryHealthy (5th-50th)

πŸ’‘ Why Child BMI Uses Percentiles

Unlike adult BMI which uses fixed categories, child BMI must be interpreted using age- and sex-specific percentile charts. A 'normal' BMI changes as children grow β€” what's healthy for a 5-year-old is different from a 15-year-old.

CDC categories: Underweight (<5th percentile), Healthy (5th-85th), Overweight (85th-95th), Obese (β‰₯95th). These percentiles are based on growth data from US children.

10-year-old boy, 30 kg, 140 cm: BMI = 15.3 β€” approximately 50th percentile (Healthy weight).

Child & Teen BMI Calculator FAQ

πŸ”— Related Calculators

BMI CalculatorCalculate your Body Mass Index (BMI) from height and weight. See your BMI category and healthy weight range instantly.Child Height Percentile CalculatorFind your child's height-for-age percentile using CDC growth charts for children aged 2-18 years.Child Weight Percentile CalculatorFind your child's weight-for-age percentile using CDC growth charts for children aged 2-18 years.