Body Fat Calculator
Estimate your body fat percentage using the U.S. Navy method. Get fat mass, lean mass, and body composition category.
How to use
This tool calculates your body fat percentage using the U.S. Navy circumference method. 1. Select your measurement system using the Imperial/Metric toggle buttons 2. Choose your gender using the Male/Female buttons (females get an additional hip measurement field) 3. Enter your measurements by typing in each field: - Height and weight - Waist circumference (measure at narrowest point) - Neck circumference (measure below Adam's apple) - Hip circumference (females only, measure at widest point) 4. Click "Calculate Body Fat" to see results The calculator will display: - Your body fat percentage as a large number - A fitness category (Essential Fat, Athletic, Fitness, Average, or Above Average) - Fat mass and lean mass breakdown All input fields accept decimal values for precise measurements. The calculator automatically converts between measurement systems and applies gender-specific formulas for accurate results.
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