(For Imperial Method Click Blue CM button)
Your BMI
Your body mass index is {bmiString} ({weightStatus}). {weightMessage}
Your body fat percentage is approximately {percentFatString}% ({percentFatStatus}).
BMI Calculator for Kids & Teens: Growth Tracking
Monitoring a child’s Body Mass Index (BMI) is different from adults. Because children’s bodies change rapidly as they grow, their BMI is calculated relative to their age and sex using BMI-for-age percentiles.
Why Percentiles Matter
A single BMI number doesn’t tell the whole story for a child. Instead, we look at where they stand compared to other children of the same age and gender.
- Underweight: BMI-for-age < 5th percentile.
- Healthy Weight: 5th percentile to < 85th percentile.
- Overweight: 85th to < 95th percentile.
- Obese: 95th percentile or greater.
Healthy Growth & Development
BMI is a screening tool, not a diagnosis. If your child’s BMI falls outside the healthy range, it is a signal to discuss nutrition and activity levels with a pediatrician. Healthy habits started young last a lifetime!