FFMI Calculator (Fat-Free Mass Index)

Calculate your Fat-Free Mass Index β€” a measure of muscularity relative to height that helps assess if a physique is naturally achievable.

πŸ’ͺ FFMI Calculator

Results

FFMI22.2
Normalized FFMI22.5
Lean Body Mass68.0 kg
Fat Mass12.0 kg
CategoryExcellent

πŸ’‘ What Is FFMI?

FFMI = lean body mass (kg) / height (m)Β². The normalized FFMI adjusts for height differences: NFFMI = FFMI + 6.1 Γ— (1.8 βˆ’ height in m). This allows fair comparison between people of different heights.

A landmark 1995 study found that natural bodybuilders rarely exceed a normalized FFMI of 25. Steroid users averaged 25+. An FFMI of 22-23 represents an excellent natural physique.

80 kg, 175 cm, 15% body fat: LBM = 68 kg. FFMI = 22.2, Normalized FFMI = 22.5 (Above Average β€” excellent natural physique).

FFMI Calculator (Fat-Free Mass Index) FAQ

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