Tools > LBM Calculator
Lean Body Mass Calculator
Lean Body Mass (LBM) is the weight of your body minus your body fat. It includes your skin, bones, ligaments, tendons, and organs.
Calculating your LBM is often more useful than just knowing your weight, as it gives you a clearer picture of your actual body composition.
Calculate Your LBM
Estimate your lean mass based on your height and weight.
Your Lean Body Mass
--
lbs
Estimated Body Fat %--%
User
OneBody Member
LBM Composition Report
Primary Biometrics
Input Height
--
Input Weight
--
Lean Body Mass
--lbs
Est. Body Fat
--%
Verified Composition Analysis
Composition & Longevity Insights
Calculating your personalized composition strategy...
Mass Optimization Checklist
Maintain protein intake above 1.6g/kg
Engage in resistance training 3-4x weekly
Prioritize sleep quality (growth hormone)
Monitor visceral fat markers (Clinic)
Optimize recovery and hydration
Track lean mass trends quarterly
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The Science
Lean Body Mass Explained
What is Lean Body Mass?
Lean Body Mass (LBM) is the amount of weight you carry on your body that isn't fat. The goal of any bodybuilder or fitness enthusiast is to drop weight while keeping your lean body mass the same.
The Boer Formula
We use the Boer formula:
Men: 0.407 × weight[kg] + 0.267 × height[cm] − 19.2
Women: 0.252 × weight[kg] + 0.473 × height[cm] − 48.3