Health & Fitness Calculators

Lean Body Mass Calculator

Estimate lean body mass with Boer, James, and Hume equations.

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Introduction

Lean body mass (LBM) estimates the weight of your body excluding fat. Equations by Boer, James, and Hume are commonly used in clinical and research settings. Comparing multiple formulas reduces reliance on a single estimate.

Benefits

  • Three established equations
  • Useful for nutrition planning context

Educational wellness tool only — not medical advice. Consult a qualified healthcare professional for personal decisions.

How It Works

  1. Select sex
  2. Enter height and weight
  3. Review Boer, James, Hume, and average LBM

Formula Used

Boer, James, and Hume LBM equations

Examples

Example: Male 180 cm, 80 kg → LBM often around the mid-60 kg range depending on formula.

Frequently Asked Questions

Is LBM the same as muscle mass?

No. LBM includes muscle, organs, bone, and water — not muscle alone.