Calculate your Fat Free Mass (FFM) — everything in your body that isn't fat, including muscle, bone, water, and organs. FFM is an important metric for tracking fitness progress.
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How this calculator works
Fat Free Mass is calculated by subtracting fat mass from total body weight. It includes muscle mass, bone density, water content, and organ weight.
Common questions about this calculator
These calculators provide estimates based on standardized formulas. For clinical assessment, consult a healthcare professional.
