Calculate your Fat-Free Mass Index (FFMI) and discover how much muscle mass you can still build. More accurate than BMI for athletes.
FFMI is an estimate. Individual genetic potential varies. An FFMI above 25 for men suggests the use of performance-enhancing drugs, but exceptions exist.
Do you want a training plan focused on reaching your genetic potential?
Message SteevThe Fat-Free Mass Index (FFMI) is a measure of how much muscle mass you carry relative to your height. Where BMI makes no distinction between fat and muscle, FFMI does. A bodybuilder with a BMI of 30 can be perfectly healthy - their FFMI tells the real story.
The normalized FFMI corrects for height (to 1.80m), so you can honestly compare yourself to reference values. Scientific research suggests that an FFMI of 25 for men and 20 for women is the upper limit of what is naturally achievable. That's your genetic ceiling.
Use your FFMI as a compass. Are you at 70%? Then you still have room to grow. Are you at 90%? Then progress slows down and your training and nutrition strategy becomes increasingly important.