Fat Free Mass Index Formula

Equation for calculate fat free mass index is,

Lean: Weight × ( 1.0 - (Body Fat / 100.0 ))

FFMI = ( Lean / 2.2 ) / ((Height × 12 + Inches) × 0.0254)²

Adjusted FFMI = FFMI + ( 6.0 × ( ((Height × 12.0 + Inches) × 0.0254) - 1.8 ))