1. What is BMI for Children?

Body Mass Index (BMI) is a measure that adjusts body weight for height. For children and teens, BMI is age- and sex-specific and is often referred to as BMI-for-age. Growth charts from WHO or CDC are used to determine the weight status category.

2. How Does the Calculator Work?

The calculator uses the standard BMI formula:

The result is then plotted on either:

• WHO growth charts: For children aged 0-5 years
• CDC growth charts: For children and teens aged 2-20 years

3. Importance of BMI Calculation

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

4. Using the Calculator

Tips: Enter weight in kilograms, height in meters, and age in years. Select gender and growth chart type. Measurements should be as accurate as possible for reliable results.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between WHO and CDC charts?
A: WHO charts are international standards for children 0-5 years. CDC charts are used for children 2-20 years in the United States.

Q2: What do the percentiles mean?
A: Percentiles compare a child's BMI to others of the same age and gender. Underweight (<5th), Healthy weight (5th-85th), Overweight (85th-95th), Obese (≥95th).

Q3: When should I be concerned about my child's BMI?
A: Consult a healthcare provider if your child is below the 5th percentile or above the 85th percentile.

Q4: Are there limitations to BMI for children?
A: BMI doesn't distinguish between fat and muscle mass. Athletic children may have high BMI due to muscle rather than fat.

Q5: How often should BMI be checked?
A: Annual BMI checks are recommended for children as part of routine health assessments.