1. What is BMI?

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

2. How Does the Calculator Work?

The calculator uses the BMI formula:

Where:

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

Explanation: The formula calculates body mass per unit of height squared, providing a standardized measure of body composition.

3. Importance of BMI Calculation

Details: BMI is a quick screening tool to identify potential weight problems in adults. It helps assess risk for diseases associated with overweight and obesity.

4. Using the Calculator

Tips: Enter weight in kilograms and height in meters. 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), Obesity (≥30).

Q2: Is BMI accurate for everyone?
A: BMI may overestimate body fat in muscular individuals and underestimate it in older people who have lost muscle mass.

Q3: Why is this calculator specific to adult males?
A: While the BMI formula is the same for all adults, interpretation may differ slightly by gender and age.

Q4: Should athletes use BMI?
A: Athletes with high muscle mass may have high BMI without excess body fat. Additional measurements may be needed.

Q5: What's a healthy BMI range?
A: For most adult males, a BMI between 18.5 and 24.9 is considered healthy.