Body Fat Mass Calculator
Calculate your body fat mass, body fat percentage, and lean body mass. Determine your body composition based on various measurement methods including BMI, waist-to-hip ratio, and skinfold measurements.
Step 1: Personal Information
Understanding Body Composition
Body fat mass refers to the total mass of fat in your body, while lean body mass includes muscles, bones, organs, and water. A healthy body fat percentage varies by age and gender.
Step 2: Body Measurements
Measurement Tips
Measure your waist at the narrowest point (usually just above the belly button). Measure your neck just below the larynx. For women, measure hips at the widest point.
Body Composition Results
Body Fat Percentage
Body Fat Category Comparison
| Category | Men (% fat) | Women (% fat) | Description |
|---|
Body Mass Breakdown
Body Fat Formula
U.S. Navy Body Fat Formula
For men: %Fat = 86.010 × log10(abdomen – neck) – 70.041 × log10(height) + 36.76
For women: %Fat = 163.205 × log10(waist + hip – neck) – 97.684 × log10(height) – 78.387
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