Body fat estimation
For MEN: body fat (in lbs.) = 0.28 x body weight (in lbs.) + 28.5 x subscapuar skin fold (in Inches) -36
For WOMEN: body fat (in lbs.) = 0.49 x body weight (in lbs.) + 9 x thigh skin fold (in inches) - 22.7 x tricepts skin fold (in inches) - 30
Divide results by your body weight to get % of body fat.