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 to use.
What do I need to enter to use the Lean Body Mass Calculator?
The Lean Body Mass Calculator asks for the following values (3): Gender, Weight (kg), Height (cm). Fill them in and the result appears immediately — the calculation runs on your own device, so nothing you type is sent to a server.
How accurate is the Lean Body Mass Calculator?
The Lean Body Mass Calculator uses standard, widely-accepted formulas, so its figures are reliable estimates for everyday planning. They are not a substitute for advice from a qualified professional.
Is the Lean Body Mass Calculator free, and do I need an account?
Yes. The Lean Body Mass Calculator — and every other calculator on Calculatis — is completely free, with no registration, no download and no limit on how often you use it.