Body Fat
This calculator estimates your Body Fat Percentage (%), and also displays your Lean Body Mass and Body Fat Weight.
It's important when dieting that you monitor your change in body fat rather than just body weight. Particulary during weight training programs it is often the case that you will gain muscle mass, while losing fat. Sometimes the net difference may be an increase in overall weight which isn't a true reflection on whether or not your fitness and diet program is working.
Here's a guideline from the American Council on Exercise:
Classification
Women (% fat)
Men (% fat)
Essential Fat
10-12%
2-4%
Athletes
14-20%
6-13%
Fitness
21-24%
14-17%
Acceptable
25-31%
18-25%
Obese
32% plus
25% plus
Instructions
This calculator requires the use of a scale and a measuring tape.
Select whether to want to record your weight and measurements in either Metric or Imperial units. Select your gender. Input the weights and measures into the boxes displayed.
Note: Males only need to record a waist measurement.
Weight
Male
Female
Waist (at naval)
Lean Body Mass
Body Fat Weight
Body Fat
Metric
Imperial
kg
cm
kg
kg
%
Units
Gender