1. What is BMI for Children?

Body Mass Index (BMI) is a measure that adjusts body weight for height. For children, BMI is age and gender-specific and is referred to as BMI-for-age. It's compared to growth charts to determine weight status categories.

2. How Does the Calculator Work?

The calculator uses the standard BMI formula adjusted for children's growth patterns:

The result is then compared to NSW growth charts to determine the percentile for the child's age and gender.

3. Importance of BMI Calculation

Details: BMI-for-age is the recommended measure for screening overweight and obesity in children and adolescents. It helps identify potential weight problems that may lead to health issues.

4. Using the Calculator

Tips: Enter weight in kilograms, height in meters, age in years (2-18), and select gender. Measurements should be as accurate as possible for reliable results.

5. Frequently Asked Questions (FAQ)

Q1: Why is BMI different for children than adults?
A: Children's body composition varies by age and gender as they grow. BMI-for-age accounts for these normal growth patterns.

Q2: What do the percentile ranges 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: Annual BMI screening is recommended for children aged 2 years and older.

Q4: Are there limitations to BMI for children?
A: BMI doesn't distinguish between muscle and fat mass. Athletic children may have high BMI without excess fat.

Q5: What if my child's BMI is outside the normal range?
A: Consult a healthcare provider for further evaluation. BMI is a screening tool, not a diagnostic tool.