Lean Body Mass Calculator
Estimates lean body mass from total weight and body fat percentage.
Lilu Baba's Lean Body Mass Calculator splits your total weight into lean mass and fat mass using your body fat percentage. Informational only.
How to use this calculator
- Enter your total body weight.
- Enter your body fat percentage (use our Body Fat Calculator if unsure).
- Lean body mass updates instantly.
Lean Body Mass (kg)
—
Fat Mass (kg)
—
FAQ
Lean Body Mass Calculator — frequently asked questions
Your total body weight minus fat mass — including muscle, bone, organs and water.
Use our Body Fat Calculator, a body composition scale, or a professional measurement method.