BMI Calculator for Kids & Teens
Calculate BMI percentile using CDC/WHO age- and sex-based growth charts for children 2-19.
Pediatric BMI Percentile Calculator (Ages 2–19)
Calculate CDC & WHO age- and sex-adjusted growth percentiles for children and teenagers.
⚙️ Child Details
Calculated for a 10-year-old boy (BMI: 16.8 kg/m²).
What is the BMI Calculator for Kids & Teens?
The BMI Calculator for Kids & Teens computes age- and sex-adjusted BMI percentiles according to CDC and WHO pediatric growth charts.
Unlike adult BMI (which uses fixed cutoffs), child and teen BMI depends heavily on age and sex because body fat changes rapidly as kids grow.
How Does the BMI Calculator for Kids & Teens Work?
1. Select Sex & Age — Child's sex and exact age in years/months (ages 2 to 19).
2. Enter Height & Weight — Metric or imperial.
3. View Growth Percentile — See exact BMI percentile (e.g. 50th percentile = average).
Formula & Calculation Method
$$\text{Pediatric Percentile} = f(\text{BMI}, \text{Age}, \text{Sex}) \quad \text{via CDC/WHO growth tables}$$
Example Calculation
Example: 10-year-old boy, 138 cm, 32 kg -> BMI 16.8 (52nd Percentile — Normal Weight)
Frequently Asked Questions
$$\text{Pediatric Percentile} = f(\text{BMI}, \text{Age}, \text{Sex}) \quad \text{via CDC/WHO growth tables}$$
Disclaimer: Fitness, BMI, and calorie calculations provide general guidance based on standard exercise science models. Consult a qualified medical practitioner before starting any intensive fitness or diet regimen.