1. What is BMI?

Body Mass Index (BMI) is a simple calculation using a person's height and weight. The formula is BMI = kg/m² where kg is a person's weight in kilograms and m² is their height in meters squared. It provides a reliable indicator of body fatness for most people.

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 standardize the measurement across different body sizes.

3. Importance of BMI Calculation

Details: BMI is a simple, inexpensive screening tool for weight categories that may lead to health problems. For men, BMI interpretation may vary slightly by age.

4. Using the Calculator

Tips: Enter weight in kilograms, height in meters, and age in years. All values must be valid (weight > 0, height > 0, age ≥18).

5. Frequently Asked Questions (FAQ)

Q1: What is a healthy BMI range for adult men?
A: For most men, 18.5 to 24.9 is considered healthy. However, optimal BMI may increase slightly with age.

Q2: Does BMI differ by age for men?
A: Yes, older men may have slightly higher optimal BMI ranges compared to younger men.

Q3: What are the limitations of BMI?
A: BMI doesn't distinguish between muscle and fat, so muscular individuals may have high BMI without excess fat.

Q4: Should athletes use BMI?
A: BMI may overestimate body fat in athletes with significant muscle mass. Other measurements may be more appropriate.

Q5: How often should I check my BMI?
A: For most adults, checking every 6-12 months is sufficient unless you're actively trying to change your weight.