Health

FFMI Calculator

Assess muscularity with the Fat-Free Mass Index.

Weight (kg)

Height (cm)

Body Fat (%)

FFMI—

Adjusted FFMI—

Fat-Free Mass—

Interpretation—

FFMI = FFM / Height(m)²
Adjusted FFMI = FFMI + 6.1 × (1.8 − Height)
Natural limit ~25 for men, ~22 for women.