Body Fat Calculator

Estimate your body fat percentage using the U.S. Navy method. This calculator provides an estimate of your body fat based on your height, weight, and circumference measurements.

Your Body Fat

Body Fat Percentage 0.0%
Body Fat Mass 0.0 kg
Lean Body Mass 0.0 kg

How the Body Fat Calculator Works

Our Body Fat Calculator uses the U.S. Navy method to estimate your body fat percentage. This method is based on your height, weight, and circumference measurements.

What Is Body Fat Percentage?

Body fat percentage is the total mass of fat divided by total body mass, multiplied by 100. Body fat includes essential body fat and storage body fat.

How This Calculator Determines Your Body Fat Percentage

  1. Input Your Details: Enter your gender, height, weight, and circumference measurements for your waist, neck, and (for women) hips.
  2. Body Fat Calculation: The calculator uses the U.S. Navy formula to estimate your body fat percentage:
    • Men: %Fat = 86.010 * log10(waist - neck) - 70.041 * log10(height) + 36.76
    • Women: %Fat = 163.205 * log10(waist + hip - neck) - 97.684 * log10(height) - 78.387
  3. Mass Calculation: The calculator then uses your body fat percentage to calculate your body fat mass and lean body mass.

Why Use a Body Fat Calculator?

Using a body fat calculator can help you:

  • Get a More Accurate Picture of Your Health: Body fat percentage is a better indicator of health than BMI because it distinguishes between fat and muscle.
  • Track Your Progress: Monitor your body fat percentage over time to see the results of your diet and exercise program.
  • Set Realistic Goals: Use your body fat percentage to set realistic and healthy goals for your body composition.

Frequently Asked Questions (FAQs)

1. How accurate is the U.S. Navy method?

The U.S. Navy method is a good estimate of body fat percentage, but it's not as accurate as more advanced methods like DEXA scans. It's a convenient and easy way to get a general idea of your body composition.

2. What is a healthy body fat percentage?

Healthy body fat percentages vary by age and gender. For men, a healthy range is typically 8-19%, and for women, it's 21-33%.

3. How can I lower my body fat percentage?

To lower your body fat percentage, you need to create a calorie deficit by eating fewer calories than you burn. A combination of a healthy diet and regular exercise is the most effective way to achieve this.