Skip to main content
FitNest

Body Fat Calculator

Estimate body fat percentage using circumference measurements.

17.8%

estimated body fat

Circumference methods carry a meaningful margin of error compared with DEXA scanning.

Formula: U.S. Navy circumference method

About this calculator

  • The U.S. Navy method uses circumference measurements as a low-cost estimate.
  • Measure consistently — same time of day, same tape tension — for the trend to be meaningful.

Disclaimer: This content is provided for general educational purposes only and is not medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional before making decisions about your health, exercise, or nutrition.

Related calculators