1. What is BMI for Children?

BMI (Body Mass Index) for children is calculated the same way as for adults, but the interpretation is different. Children's BMI is age and sex-specific and is expressed as a percentile relative to other children of the same age and sex.

2. How Does the Calculator Work?

The calculator uses the standard BMI formula:

The percentile is then determined by comparing the calculated BMI to CDC growth charts for children of the same age and sex.

3. Importance of BMI Percentiles

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

4. Using the Calculator

Tips: Enter weight in kilograms, height in meters, and age in years (2-20 years). The calculator will provide both the BMI value and the percentile based on CDC growth charts.

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 fixed BMI values?
A: Children's body composition changes as they grow, so percentiles account for normal growth patterns.

Q3: How accurate is this calculator?
A: It provides a screening tool but doesn't diagnose body fatness or health. A healthcare provider should evaluate concerning results.

Q4: When should I be concerned about my child's BMI?
A: If your child's BMI percentile is below 5th or above 85th, consult a healthcare provider.

Q5: Can I use this for children under 2?
A: No, BMI isn't recommended for children under 2 years. Use weight-for-length measurements instead.