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 health than weight or BMI alone, as it distinguishes between fat mass and lean body mass.

2. How Does the Calculator Work?

The calculator uses the following equation:

Where:

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

Explanation: This equation provides a simple method to estimate body fat percentage based on BMI and age, though more accurate methods like DEXA scans or skinfold measurements may be needed for precise assessment.

3. Importance of Body Fat Measurement

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

4. Using the Calculator

Tips: Enter your BMI (calculated from height and weight) and your age. All values must be valid (BMI > 0, age between 1-120).

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this calculation?
A: This provides a rough estimate. For more accuracy, consider methods like skinfold measurements, bioelectrical impedance, or DEXA scans.

Q2: What are healthy body fat percentages?
A: For men: 6-24% (athletes 6-13%, fitness 14-17%, average 18-24%). For women: 16-30% (athletes 14-20%, fitness 21-24%, average 25-30%).

Q3: Why does age factor into body fat percentage?
A: As we age, we tend to lose muscle mass and gain fat, even if weight stays the same. The equation accounts for this natural progression.

Q4: Does this work for athletes?
A: Athletes with high muscle mass may get inflated results, as BMI doesn't distinguish between muscle and fat.

Q5: Should I be concerned about low body fat?
A: Yes, extremely low body fat (under 5% for men, under 13% for women) can cause health issues like hormonal imbalances and organ dysfunction.