FFMI Calculator
Calculate your Fat-Free Mass Index (FFMI) to determine your muscle mass potential. Normalized for height to allow for consistent comparison.
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Applications
Used by bodybuilders, powerlifters, and fitness enthusiasts to track muscle growth independent of body fat changes. It helps identify your genetic muscular potential.
The Formula
Calculates normalized FFMI using the formula: Lean Body Mass (kg) / Height (m)² + 6.1 × (1.8 - Height). This adjustment allows for a consistent comparison of muscle mass across individuals of different heights.
Fun Fact: An FFMI of 25 is often cited as the upper limit for natural (non-enhanced) bodybuilders, based on historical data from the pre-steroid era.
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