Free Body Fat Calculator – Estimate Your Body Fat Percentage
Use our Body Fat Calculator to quickly estimate your body fat percentage based on your age, gender, height, weight, waist, and other measurements.
This tool applies the U.S. Navy Body Fat Formula, widely used in fitness training, bodybuilding, and health assessments to analyze how much of your weight comes from fat vs. lean muscle mass.
Understanding your body fat percentage is more accurate than using weight or BMI alone, especially when tracking fat loss, muscle gain, or improving your physique.
Body Fat Calculator (US Navy method)
Frequently Asked Questions
Body fat percentage shows what portion of your body weight is made up of fat. It is a key indicator of fitness and health.
Yes. BMI only compares height and weight, while body fat percentage shows actual fat levels, making it more useful for athletes and fitness tracking.
A healthy range varies by age and gender, but generally:
Men: 10–20%
Women: 18–28%
You can lower body fat through strength training, calorie control, balanced nutrition, hydration, and sufficient sleep. Consistency matters more than intensity.