Free Body Fat Percentage Calculator
Calculate your body fat percentage for free using the U.S. Navy method. Get accurate estimates of your fat mass and lean mass.
Your results will appear here
Fill out the form to see your estimated body fat percentage and composition.
How to Use This Body Fat Calculator
This tool estimates your body composition using the U.S. Navy method.
- Measure: Use a soft tape measure to record your neck, waist, and hip (for women) circumferences.
- Input: Enter your measurements along with your height, weight, age, and gender.
- Calculate: Click the button to see your estimated body fat percentage, fat mass, and lean mass.
Frequently Asked Questions
How accurate is this method?▼
The U.S. Navy method is considered accurate within 3-4% for most people. However, it can be less accurate for extremely muscular individuals or those with very low body fat.
What is a healthy body fat percentage?▼
Healthy ranges vary by age and gender. Generally, 21-32% is considered healthy for women, and 8-19% for men.