1. What is BMI?

Body Mass Index (BMI) is a measure of body fat based on height and weight. For children, BMI is age- and gender-specific and is expressed as a percentile comparing the child to others of the same age and gender.

2. How Does the Calculator Work?

The calculator uses the standard BMI formula:

Then compares the result to CDC growth charts for 9-year-olds:

• Underweight: Less than the 5th percentile
• Healthy weight: 5th percentile to less than the 85th percentile
• Overweight: 85th to less than the 95th percentile
• Obese: Equal to or greater than the 95th percentile

3. Importance of BMI for Children

Details: Tracking BMI in children helps identify potential weight problems that could lead to health issues. Early identification allows for timely intervention and healthy lifestyle changes.

4. Using the Calculator

Tips: Enter weight in kilograms and height in meters. For accurate results, measure height without shoes and weight with minimal clothing. The calculator is specifically designed for 9-year-old children.

5. Frequently Asked Questions (FAQ)

Q1: Is BMI accurate for children?
A: BMI is a screening tool, not a diagnostic measure. It can indicate if a child's weight might be a health concern, but a healthcare provider should evaluate further.

Q2: What if my child is very muscular?
A: BMI may overestimate body fat in muscular children. A healthcare provider can assess body composition more accurately.

Q3: How often should I check my child's BMI?
A: The CDC recommends BMI screening at least annually as part of routine health checkups.

Q4: What should I do if my child's BMI is high?
A: Consult with a pediatrician who can evaluate growth patterns over time and recommend appropriate actions if needed.

Q5: Where can I find CDC growth charts?
A: CDC growth charts are available on the CDC website (www.cdc.gov/growthcharts).