Free · Health · Body Measurements

Body Fat Calculator

Estimate body-fat percentage with the circumference-based U.S. Navy method and calculate fat and lean mass.

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Calculator inputs

Enter your values

Result

Your calculation

Estimated body fat
29.5%
U.S. Navy circumference method
Fat mass
20.6 kg
Lean mass
49.4 kg

Tape-based body-fat formulas are population estimates and can differ materially from clinical measurements.

How to use this calculator

  1. Enter current measurements as accurately as practical.
  2. Calculate to see the estimate, range, and method details.
  3. Use the result as context, and discuss health decisions with a qualified clinician.

Use the result with context

Health results are educational estimates, not a diagnosis or treatment recommendation. A qualified clinician can interpret measurements in the context of your health.