Lean Body Mass Boer Formula Calculator
Calculate lean body mass (LBM) in kilograms and pounds using the clinical Boer equation.
About the Boer LBM Equation
The Boer formula estimates fat-free mass using biometric indices, widely utilized in clinical pharmacokinetics to calibrate water-soluble intravenous medication dosages.
Formulas
- Men: LBM = (0.407 × Weight) + (0.267 × Height) - 19.2
- Women: LBM = (0.252 × Weight) + (0.473 × Height) - 48.3
Frequently Asked Questions
Why is Lean Body Mass used in drug dosing?
Hydrophilic medications distribute primarily into non-fat tissues. Dosing based on total weight in obesity can result in overdosing.
Does Boer account for age directly?
No. Height and weight serve as primary physical variables; the Hume and James equations provide comparison benchmarks.
What does Lean Body Mass include?
It includes skeletal muscle, bone minerals, internal vital organs, connective tissue, and intracellular/extracellular water.
How does LBM relate to resting energy expenditure?
LBM represents the primary driver of basal metabolic rate (BMR), as lean tissues consume the majority of resting energy.
Calculate in three steps
- 1Enter your valuesUse the fields above and check the units shown beside each input.
- 2Run the calculationSelect Calculate to refresh the result with your latest values.
- 3Review or shareCompare the result, reset the form, print it, or share this page.