Bodyfat calculator for female athletes
by the 3-folds formula by Jackson / Pollock

Attention:
male athletes should use the 3-folds formula by Jackson / Pollock for men.

Please enter your measurements:
Location 1st fold 2nd fold 3rd fold
mm mm mm
mm mm mm
mm mm mm
years




How does it work?

First measure all sites; three times would be best, but once is enough. Then enter your values into the apropriate fields and click the Calculate button. The result will be displayed.

What if no result is displayed?

We need one value in each line at least. If you did not, the calculator ignores your input. And please don't forget to enter your age, please. It's needed, too.

The Locations:

1) Triceps: A vertical fold at mid of the upper arms backside.

2) Waist: A vertical fold an inch right from the navel.

3) Hip: A diagonal fold straight over the pelvis, close to the navel. Angle of inclination should be 30°, clockwise.

The formula:

S = Sum of 3 folds
A = Age in years
d = 1.089733 - 0.0009245*S + 0.0000056*S² - 0.00012828*A
fat [%] = 495 / d - 450

Source:

Jackson and Pollock: Generalized equations for predicting body density of women.
Published in: British Journal of Nutrition, issue Nr. 40 (November 1978), pages 497 for 504.