The Jackson and Pollock 4 equation is a fairly accurate equation for calculating body fat percentage, which utilizes 4 skinfold sites and considers gender and age. It is ideal for the general population, is simpler and faster to perform compared to the Jackson and Pollock 7 site equation, and is more accurate than the the 3-site equation. This well-performed equation makes it one of the most commonly used body fat percentage tests.
Body density = (0.29288 x sum of all the skinfolds) – (0.0005 x sum of all of skinfolds squared) + (0.15845 x age) – 5.76377
Body Fat Percentage (%) = [(495 / Body Density) – 450] x 100
Body Density = (0.29669 x sum of all the skinfolds) – (0/00043 x sum of all of skinfolds squared) + (0.02963 x age) + 1.4072
Body Fat Percentage (%) = [(495 / Body Density) – 450] x 100