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. For men, the normal range is typically 18.5–24.9 kg/m².

2. How Does the Calculator Work?

The calculator uses the standard BMI formula:

Where:

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

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

3. Importance of BMI Calculation

Details: BMI is an inexpensive and easy screening method for weight category—underweight, healthy weight, overweight, and obesity. For most men, BMI correlates with amount of body fat.

4. Using the Calculator

Tips: Enter weight in kilograms and height in meters. For accurate results, measure weight without heavy clothing and height without shoes.

5. Frequently Asked Questions (FAQ)

Q1: What is the normal BMI range for men?
A: For adult men, normal BMI is 18.5–24.9 kg/m². Below 18.5 is underweight, 25-29.9 is overweight, and 30+ is obese.

Q2: Does BMI differ for men and women?
A: The same BMI categories apply to both men and women, though men typically have more muscle mass at a given BMI.

Q3: What are BMI limitations?
A: BMI doesn't distinguish between muscle and fat, so muscular men may have high BMI without excess fat. It also doesn't account for fat distribution.

Q4: Is BMI accurate for athletes?
A: BMI may overestimate body fat in athletes with significant muscle mass. Additional measurements like waist circumference may be helpful.

Q5: Should elderly men use the same BMI ranges?
A: Some experts suggest slightly higher BMI ranges (up to 27) may be acceptable for men over 65, as very low BMI can indicate health risks.