1. What is BMI?

Body Mass Index (BMI) is a simple calculation using a person's height and weight. It provides a reliable indicator of body fatness for most people and is used to screen for weight categories that may lead to health problems.

2. How Does the Calculator Work?

The calculator uses the standard BMI formula:

Where:

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

Explanation: The formula divides weight by the square of height to provide a standardized measure of body mass relative to height.

3. Importance of BMI Calculation

Details: BMI is a quick screening tool for weight categories that may lead to health problems. It helps identify potential weight problems in adults.

4. Using the Calculator

Tips: Enter weight in kilograms, height in meters, and select gender. All values must be valid (weight > 0, height > 0).

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), and Obese (≥30).

Q2: Is BMI different for men and women?
A: The calculation is the same, but interpretation may vary slightly due to natural body composition differences.

Q3: What are limitations of BMI?
A: BMI doesn't directly measure body fat and may misclassify muscular individuals as overweight or fail to detect excess fat in some individuals.

Q4: Is BMI applicable to all ages?
A: This calculator is for adults (20+ years). Children and teens need age- and sex-specific percentiles.

Q5: What's a healthy BMI range?
A: For most adults, 18.5 to 24.9 is considered healthy, though individual health factors should also be considered.