ChompCalc

Body Fat % Calculator

Estimate your body fat percentage using the US Navy method — no equipment needed.

cm
cm
cm
cm

Plug in some numbers —

we'll crunch.

How to use

  1. 1Select your biological sex.
  2. 2Measure your height accurately.
  3. 3Measure your waist at the narrowest point (at the navel for men, smallest point for women).
  4. 4Measure your neck just below the larynx (Adam's apple).
  5. 5Women: also measure hip circumference at the widest point.
  6. 6Enter all measurements and click Calculate.

Frequently asked questions

Estimated values only. DEXA scan or hydrostatic weighing provides clinical-grade accuracy.