Body Fat: 0.0
Fat Free Mass: 0.0
FFMI: 0
Normalized Fat-Free Mass Index: 0
BF [kg], FFM [kg], FFMI [kg/m²], NFFMI [kg/m²].
FFMI Formulas
The mathematical formulas to compute the fat-free mass index (FFMI) are listed below:
Fat-Free Mass Index (FFMI): FFMI [kg/m2] = FFM [kg] / (height [m])2
Normalized Fat-Free Mass Index: Normalized FFMI [kg/m2] = FFM [kg] / (height [m])2 + 6.1 × (1.8 − height [m])
Fat-Free Mass (FFM): FFM [kg] = weight [kg] × (1 − (body fat [%] / 100))
FFMI is a measurement of how much muscle you have per unit of height. Although imperfect,
research shows FFMI is a reliable indicator of whether or not someone is taking or has taken steroids to build muscle. You can calculate your FFMI by dividing your fat-free mass (your total body weight minus the weight of your body that’s fat) in kilograms by your height in meters squared, or simply entering your height, weight, and body fat percentage into the Legion FFMI Calculator.
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