Body Fat Calculator
Estimate body fat percentage
Formula
Male:
86.010 × log₁₀(waist−neck)
− 70.041 × log₁₀(height) + 36.76
Female:
163.205 × log₁₀(waist+hip−neck)
− 97.684 × log₁₀(height) − 78.387
All measurements in inches
Body Fat Categories
Men
< 6%Essential Fat
6–13%Athletic
14–17%Fitness
18–24%Average
25%+Obese
Women
< 14%Essential Fat
14–20%Athletic
21–24%Fitness
25–31%Average
32%+Obese
FAQ
Where do I measure my waist?
Measure your waist at the navel (belly button) level while relaxed. Do not suck in your stomach.
Where do I measure my neck?
Measure your neck just below the larynx (Adam's apple), sloping slightly downward at the front.