Calculate Body Fat Percentage

Body Fat Percentage Formula:

\[ \text{Body Fat %} = (1.20 \times \text{BMI}) + (0.23 \times \text{Age}) - 16.2 \text{ (for men)} \] \[ \text{Body Fat %} = (1.20 \times \text{BMI}) + (0.23 \times \text{Age}) - 5.4 \text{ (for women)} \]

Body Fat Percentage:

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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 BMI alone, as it distinguishes between fat mass and lean mass.

2. How Does the Calculator Work?

The calculator uses the following formulas:

\[ \text{For Men: Body Fat %} = (1.20 \times \text{BMI}) + (0.23 \times \text{Age}) - 16.2 \] \[ \text{For Women: Body Fat %} = (1.20 \times \text{BMI}) + (0.23 \times \text{Age}) - 5.4 \]

Where:

\( BMI \) — Body Mass Index (kg/m²)
\( Age \) — Age in years
Different constants are used for men and women

Explanation: This formula estimates body fat percentage based on BMI and age, with gender-specific adjustments.

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 (calculate it first if needed), age in years, and select your gender. 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 reasonable estimate but may not be as accurate as skinfold measurements 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 different formulas for men and women?
A: Women naturally carry more essential body fat than men due to reproductive needs.

Q4: Can I use this if I'm very muscular?
A: This method may overestimate body fat for very muscular individuals as it doesn't account for muscle mass.

Q5: How often should I measure body fat percentage?
A: Every 4-8 weeks is sufficient to track meaningful changes.