Lean Body Mass Calculator
Estimate your lean body mass and fat mass.
Result
Results are estimates for general information only and are not professional advice.
Lean body mass
Lean body mass is your total weight minus body fat — muscle, bone, organs and water. This calculator uses the Boer formula to estimate it, which is useful for fitness tracking and setting protein and calorie targets.
Frequently Asked Questions
What is the Lean Body Mass Calculator?
Estimate your lean body mass and fat mass. It runs instantly in your browser and is completely free.
Is the Lean Body Mass Calculator free and does it require signup?
Yes. Every calculator on Calculatis is 100% free with no registration, and the values you enter are never stored.
How accurate is the Lean Body Mass Calculator?
It uses standard, widely-accepted formulas. Results are reliable estimates for general use and are not a substitute for professional advice.