Body Fat Percentage Calculator
Estimate your body fat using the US Navy method, a reliable formula based on circumference measurements.
Your Estimate
Enter your measurements and click Calculate.
What is a Body Fat Calculator?
A body fat percentage calculator estimates how much of your total body weight comes from fat. This tool uses the U.S. Navy method, which relies on simple body measurements such as the neck, waist, and hips to estimate body composition without special equipment. The result is an estimate intended for general informational use.
How to Use the Body Fat Percentage Calculator
- Select Units and Gender: Choose Imperial (in/lb) or Metric (cm/kg), then select your gender.
- Enter Your Measurements: Measure and enter your age, height, weight, neck, and waist. If you are female, also enter your hip measurement
- Calculate Your Result: The calculator displays your estimated body fat percentage, a general category, and an estimate of fat mass and lean mass