1. What is BMI?

Body Mass Index (BMI) is a measure of body fat based on height and weight that applies to adults and children. For toddlers, BMI is age- and sex-specific and is often referred to as BMI-for-age.

2. How Does the Calculator Work?

The calculator uses the standard BMI formula:

Where:

• \( weight \) — Body weight in kilograms (kg)
• \( height \) — Height in meters (m)

Explanation: The formula calculates body mass index by dividing weight by the square of height.

3. Importance of BMI for Toddlers

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

4. Using the Calculator

Tips: Enter weight in kilograms and height in meters. All values must be valid (weight > 0, height > 0). For toddlers, BMI should be interpreted using age- and sex-specific growth charts.

5. Frequently Asked Questions (FAQ)

Q1: What is a normal BMI for a toddler?
A: Normal BMI ranges vary by age and sex. Generally, between the 5th and 85th percentiles on the CDC growth charts is considered healthy.

Q2: How often should I measure my toddler's BMI?
A: Pediatricians typically measure BMI at all well-child visits starting at age 2.

Q3: Why is BMI different for children than adults?
A: Children's body composition varies as they grow, so BMI must be compared against growth charts specific to their age and sex.

Q4: What if my toddler's BMI is high?
A: Consult your pediatrician. High BMI may indicate overweight, but other factors like muscle mass and growth patterns should be considered.

Q5: Are there limitations to BMI for toddlers?
A: BMI doesn't distinguish between fat and muscle mass, and may not be accurate for very muscular children or those with certain medical conditions.