1. What is Body Mass Index?

Body Mass Index (BMI) is a measure of body fat based on height and weight that applies to adult men and women. It is a simple and widely used screening tool to identify weight categories that may lead to health problems.

2. How Does the Calculator Work?

The calculator uses the standard BMI formula:

Where:

• \( weight_{kg} \) — Weight in kilograms (kg)
• \( height_{m} \) — Height in meters (m)

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

3. Importance of BMI Calculation

Details: BMI is an important screening tool for identifying potential weight-related health risks. It helps in assessing whether an individual is underweight, normal weight, overweight, or obese, which can indicate potential 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 accurate results, measure weight and height using calibrated scales and stadiometers.

5. Frequently Asked Questions (FAQ)

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

Q2: Is BMI accurate for everyone?
A: BMI may not be accurate for athletes with high muscle mass, pregnant women, children, and the elderly as it doesn't distinguish between muscle and fat.

Q3: How often should I check my BMI?
A: For general monitoring, checking every 3-6 months is sufficient unless you're actively trying to change your weight.

Q4: What are the limitations of BMI?
A: BMI doesn't account for muscle mass, bone density, overall body composition, and racial and sex differences.

Q5: Should BMI be used alone for health assessment?
A: No, BMI should be used in conjunction with other measurements like waist circumference, body fat percentage, and overall health assessment.