Body Fat Calculator

About Body Fat Calculator

The body fat calculator uses the U.S. Navy circumference method with waist, neck, hip, height, weight, and sex inputs.

How to Use

The body fat calculator uses the U.S. Navy circumference method with waist, neck, hip, height, weight, and sex inputs.

  1. Open the calculator : Use Body Fat Calculator from the Health category.
  2. Check the inputs : Review the required values and any optional settings.
  3. Read the formula : Use the formula and notes below to understand how the result is produced.

Common Questions

What does the Body Fat Calculator estimate?

It estimates body fat percentage from the measurements you enter.

How accurate is the result?

Treat it as an estimate, since measurement method and body composition can change the result.

Inputs

  • Sex
  • Weight
  • Waist - Measure waist at navel height with the tape level and relaxed.
  • Neck - Measure just below the larynx without compressing the skin.
  • Hip - For female estimates, measure at the widest point of the hips.
  • Height

Outputs

  • Body fat
  • Fat mass
  • Lean mass
  • Method

Formula

Body fat estimate uses logarithmic circumference formulas from the U.S. Navy method.