1. What is BMI Percentile?

BMI percentile is a measure that compares a child's BMI to other children of the same age and gender. It helps assess whether a child has a healthy weight relative to their peers.

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 age and gender.

3. Importance of BMI Percentile

Details: BMI percentile is the preferred measure for assessing weight status in children and teens because it accounts for normal differences in body fat between boys and girls and differences in body fat at various ages.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: Why use BMI percentile instead of regular BMI for children?
A: Children's body fat changes with age and differs between boys and girls, so BMI percentiles provide a more accurate assessment.

Q2: What do the percentile categories mean?
A: Below 5th: Underweight; 5th-85th: Healthy weight; 85th-95th: Overweight; Above 95th: Obese.

Q3: How often should children's BMI be checked?
A: The American Academy of Pediatrics recommends BMI screening annually for all children aged 2+ years.

Q4: Are there limitations to BMI percentile?
A: It doesn't distinguish between fat and muscle mass, and may be less accurate for very muscular teens or those with certain medical conditions.

Q5: Where can I find official growth charts?
A: The CDC provides detailed growth charts at: https://www.cdc.gov/growthcharts/