1. What is Body Fat Percentage?

Body fat percentage is the proportion of fat in your body compared to your total body weight. It's a more accurate indicator of fitness than body weight alone, as it distinguishes between fat and lean mass.

2. How Does the Calculator Work?

The calculator uses the following formula specifically for men:

Where:

• \( BMI \) — Body Mass Index (kg/m²)
• \( Age \) — Age in years

Explanation: This equation estimates body fat percentage based on BMI and age, with coefficients specifically calibrated for male physiology.

3. Importance of Body Fat Percentage

Details: Knowing your body fat percentage helps assess health risks associated with obesity, track fitness progress, and set appropriate weight management goals.

4. Using the Calculator

Tips: Enter your BMI (calculated as weight in kg divided by height in meters squared) and your age in years. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this formula?
A: This provides a reasonable estimate for most men, but more accurate methods include skinfold measurements, DEXA scans, or bioelectrical impedance analysis.

Q2: What are healthy body fat percentage ranges for men?
A: For men: Essential fat 2-5%, Athletes 6-13%, Fitness 14-17%, Average 18-24%, Obese 25%+.

Q3: Why is age a factor in the calculation?
A: Body composition changes with age, typically showing increased fat mass and decreased muscle mass as we get older.

Q4: Can this formula be used for women?
A: No, women have different body fat distribution and require a different formula.

Q5: How often should I measure my body fat percentage?
A: Monthly measurements are sufficient for tracking trends, as daily fluctuations are common but not meaningful.