1. What is Pediatric BMI Percentile?

The CDC BMI-for-age growth charts are the most commonly used indicator to measure the size and growth patterns of children and teens in the United States. BMI percentiles show how a child's measurements compare with others the same gender and age.

2. How Does the Calculator Work?

The calculator uses the standard BMI formula:

Then compares the result to CDC growth charts to determine the percentile based on the child's age and gender.

3. Importance of BMI Percentile

Details: BMI percentiles are the most commonly used indicator to assess the size and growth patterns of children. They help identify potential weight problems that may lead to health issues.

4. Using the Calculator

Tips: Enter weight in kilograms, height in meters, age in years (2-19), and select gender. All values must be valid (weight > 0, height > 0, age between 2-19).

5. Frequently Asked Questions (FAQ)

Q1: What do the percentile ranges mean?
A: Underweight (<5th), Healthy weight (5th-85th), Overweight (85th-95th), Obese (≥95th).

Q2: Why use percentiles instead of BMI categories?
A: Children's body fat changes with age and differs between boys and girls, so percentiles are more accurate.

Q3: How often should BMI be calculated for children?
A: The AAP recommends annual BMI screening for all children ages 2 years and older.

Q4: Are there limitations to BMI percentiles?
A: BMI doesn't distinguish between fat and muscle, so athletic children may have higher BMI without excess fat.

Q5: What if my child is below 2 years old?
A: For children 0-2 years, use WHO weight-for-length charts instead of BMI.