1. What is BMI Percentile?

BMI percentile is a measure used to compare a child's BMI to other children of the same age and sex. It helps determine if a child is underweight, healthy weight, overweight, or obese according to CDC growth charts.

2. How Does the Calculator Work?

The calculator uses the standard BMI formula adjusted for age and sex:

The result is then compared to CDC growth charts for girls to determine the percentile.

3. Importance of BMI Percentile

Details: BMI percentile is the best indicator of healthy weight for children and teens. It helps identify potential weight problems that might lead to health issues.

4. Using the Calculator

Tips: Enter weight in kilograms, height in meters, and age in years (2-20 years). For accurate results, measurements should be taken with minimal clothing and no shoes.

5. Frequently Asked Questions (FAQ)

Q1: What do the percentile ranges mean?
A: Below 5th = Underweight; 5th-85th = Healthy weight; 85th-95th = Overweight; 95th and above = Obese.

Q2: Why use percentiles instead of BMI categories?
A: Children's body fat changes with age, so percentiles account for normal growth patterns.

Q3: How often should BMI be checked in children?
A: The AAP recommends BMI screening at least annually starting at age 2.

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

Q5: What if my child's percentile changes significantly?
A: Consult a healthcare provider to evaluate growth patterns and potential health concerns.