1. What is BMI?

Body Mass Index (BMI) is a simple index of weight-for-height that is commonly used to classify underweight, normal weight, overweight and obesity in adults. It is calculated by dividing weight in kilograms by the square of height in meters.

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 provides a simple numeric measure of a person's thickness or thinness, allowing health professionals to discuss weight problems objectively with their patients.

3. Importance of BMI Calculation

Details: BMI is an inexpensive and easy screening method for weight category - underweight, healthy weight, overweight, and obesity. It correlates fairly well with body fat in most people.

4. Using the Calculator

Tips: Enter weight in kilograms and height in meters. For accurate results, measure weight after overnight fasting and height without shoes.

5. Frequently Asked Questions (FAQ)

Q1: What are the standard BMI categories?
A: Underweight (<18.5), Normal weight (18.5-24.9), Overweight (25-29.9), Obesity (≥30).

Q2: Is BMI different for women in South Australia or Indonesia?
A: The calculation is the same, but interpretation may vary slightly based on population characteristics.

Q3: What are limitations of BMI?
A: BMI doesn't distinguish between muscle and fat mass, and may not be accurate for athletes, pregnant women, or the elderly.

Q4: When should BMI be measured?
A: BMI should be checked regularly as part of routine health assessments, especially when monitoring weight-related health risks.

Q5: Should BMI be the only measure of healthy weight?
A: No, waist circumference and other factors should also be considered for a complete assessment.