FFMI Calculator – Fat-Free Mass Index for fitness

FFMI Calculator

Calculate your Fat-Free Mass Index and track your muscle mass development

Body Measurements

Body Weight

Body Fat Percentage (%)

Height

Gender (Optional)

Body Weight: -

Body Fat Percentage: -

Height: -

Fat-Free Mass: -

FFMI Score: -

Normalized FFMI: -

Muscle Mass Category

Enter measurements to calculate

Fat-Free Mass

lean body mass

FFMI Score

muscle index

Below Avg 0% Excellent

< 17 Below Average

17 - 19 Average

19 - 21 Fit

21 - 23 Muscular

23 - 25 Excellent (Natural Limit)

> 25 Possibly Enhanced