# Jackson and Pollock 4 Site Formula for Calculating Body Fat Percentage

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.

### Jackson and Pollock 4 Skinfold Sites

• Tríceps
• Abdomen
• Suprailíac
• Thigh

What is the ideal body fat percentage for men and women?

#### Jackson-Pollock 4 Equation for Men

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

#### Jackson-Pollock 4 Equation for Women

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