← All Tools
/ Fat-Free Mass Index (FFMI) Calculator
Fat-Free Mass Index (FFMI) Calculator
Calculate your Fat-Free Mass Index (FFMI) to assess muscular potential and genetic limits.
Understanding the Fat-Free Mass Index (FFMI)
While BMI only looks at total weight and height, the **Fat-Free Mass Index (FFMI)** accounts for muscle mass relative to height. It is highly valued in bodybuilding to estimate natural potential, as scores above 25 without performance-enhancing drugs are historically rare.
常见问题解答
For natural male lifters, an FFMI of 25 is generally considered the maximum genetic limit.
FFMI = Lean Body Mass in kg / (Height in meters)^2.