1. What is BMI For Age Percentile?

BMI-for-age percentile is a measure that compares a child's BMI to other children of the same age and sex. It helps assess whether a child's weight is appropriate for their height, age, and sex.

2. How Does the Calculator Work?

The calculator uses the standard BMI formula:

Then compares the result to CDC growth charts for girls to determine the percentile.

Explanation: BMI percentile accounts for normal variations in body fat at different ages during growth and development.

3. Importance of BMI Percentile

Details: BMI-for-age is the recommended indicator for screening overweight and obesity in 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, measure height and weight without shoes and in light clothing.

5. Frequently Asked Questions (FAQ)

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

Q2: Why use percentiles instead of BMI categories for adults?
A: Children's body fat changes with age and differs between boys and girls. Percentiles account for these normal growth patterns.

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

Q4: What if my child is above the 85th percentile?
A: Consult a healthcare provider for evaluation. They may assess diet, physical activity, family history, and other health indicators.

Q5: Are there limitations to BMI-for-age?
A: BMI doesn't distinguish between fat and muscle. Athletic children with more muscle may have higher BMI without excess fat.