Body Fat Calculator

This Body Fat Calculator helps you estimate your body fat percentage based on simple body measurements, providing a clearer picture of your body composition beyond weight alone.

Body Fat Calculator







Results

Body Fat: 0%

Body Fat Mass: 0 lbs

Lean Body Mass: 0 lbs

Body Fat Formula (U.S. Navy Method)

For men:
Body Fat (%) = 86.010 × log10(waist − neck) − 70.041 × log10(height) + 36.76

For women:
Body Fat (%) = 163.205 × log10(waist + hip − neck) − 97.684 × log10(height) − 78.387

Measurements Explained

  • Waist: measured at the narrowest point of the waist
  • Neck: measured just below the Adam’s apple
  • Hip (women only): measured at the widest point of the hips
  • Height: measured without shoes

How It Works

The calculator uses body circumference measurements to estimate body fat percentage, offering a practical alternative to more complex laboratory methods.

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