Body Fat Calculator
The following body fat calculator uses the U.S. Navy Circumference Method where three or four body measurements are fed into a fixed formula to estimate the percentage of your body that is made up of fat. The measurements need to be accurate to within 0.5cm or 0.25 inches and should be taken as follows:
Height:
Neck:
Waist:
Hips:
taken without shoes
taken below the larynx sloping slightly downward at the front
for men at navel height, for women at the smallest point
(women only) at the largest point
         
  Description Women Men  
  Essential fat 12–15% 2–5%  
  Athletes 16–20% 6–13%  
  Fitness 21–24% 14–17%  
  Acceptable 25–31% 18–25%  
  Obese 32%+ 25%+  
         
This is an estimated only. It is not intended to be taken as medically accurate.