The YMCA uses a simple equation to estimate the body fat in adults.
Parameters:
(1) waist circumference at the level of the umbilicus (navel) in inches
(2) weight in pounds
(3) gender
male body fat in pounds =
= (4.15 * (waist circumference in inches)) - (0.082 * (body weight in pounds)) - 98.42
female body fat in pounds =
= (4.15 * (waist circumference in inches)) - (0.082 * (body weight in pounds)) - 76.76
percent body fat =
= (body fat in pounds) / (body weight in pounds)
