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The Number That Tells the Truth

FFMI cuts through the noise. Enter your measurements and see exactly where you stand against natural limits and the enhanced population.

Free Tool —
Input Your Data
Units
Sex
centimeters
kilograms
%
Normalized FFMI
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Enter your measurements

The natural ceiling sits around 25 FFMI for males. Genetic outliers exist. Above 25 does not confirm enhancement. Below 25 does not confirm natural status. It is one data point, not a verdict.

FFMI Spectrum
Your Numbers
Lean Mass
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Fat Mass
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Raw FFMI
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unadjusted
Normalized FFMI
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height-adjusted
Normalization adjusts for height differences. Taller individuals tend to have lower raw FFMI at equivalent muscularity. The formula adds 6.1 × (1.8 − height in meters) to the raw FFMI.
Population Context

Male Reference Points

Population FFMI Range

FFMI is a population-level metric, not an individual diagnosis. Genetics, training history, and measurement accuracy all affect output. Your body fat estimation method (DEXA, calipers, visual) will significantly shift the result. Educational purposes only.

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Protocols.is

Every compound analyzed. Positives and negatives. No agenda. You make the call.

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