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The Body Fat E-Guide 
Calculator Demo 
Measure infinite muscle & body fat combinations, and modify your energy balance with Energy Balance Calculators for males and females. 

Watch the animation below.

STEP 1: Enter Weight and Waist. 
Click calculate button.

Your body composition and RMR (resting metabolic rate) are calculated. 

STEP 2: Enter Activity and Diet. 
Click calculate button.

Your Energy Output and Net Calorie Intake are calculated.