💪 Lean Body Mass (Boer)
Estimate lean body mass with the Boer formula.
Clinical takeaway
Several LBM formulae exist (Boer, James, Hume).
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When to use
Drug dosing and physiological scaling.
How it works
Men: 0.407·wt + 0.267·ht − 19.2. Women: 0.252·wt + 0.473·ht − 48.3 (kg, cm).
Key points
- Several LBM formulae exist (Boer, James, Hume).
- Used for some anaesthetic drug dosing.
- Choose the weight specified for each drug.
References
Decision support for licensed clinicians only; not a substitute for clinical judgement, diagnosis or local protocols.
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| Weight | 80 kg |
|---|---|
| Height | 180 cm |
| Sex | Male |
→Lean body mass61.4kg
- Formula (Boer)：0.407·wt + 0.267·ht − 19.2
| Weight | 80 kg |
|---|---|
| Height | 180 cm |
| Sex | Female |
→Lean body mass57.0kg
- Formula (Boer)：0.252·wt + 0.473·ht − 48.3
Frequently asked questions
- What is Lean Body Mass (Boer)?
- Estimate lean body mass with the Boer formula.
- How is Lean Body Mass (Boer) calculated? What is the core formula?
- Men: 0.407·wt + 0.267·ht − 19.2. Women: 0.252·wt + 0.473·ht − 48.3 (kg, cm).
- When is Lean Body Mass (Boer) used?
- Drug dosing and physiological scaling.
- What are the key clinical points for Lean Body Mass (Boer)?
- Several LBM formulae exist (Boer, James, Hume). Used for some anaesthetic drug dosing. Choose the weight specified for each drug.
- What are the limits and cautions when using Lean Body Mass (Boer)?
- For licensed clinicians and clinical researchers. Interpret results with history, investigations and local protocols; not a diagnosis or prescription, and not a substitute for multidisciplinary decision-making or local guidelines.
- How is Lean Body Mass (Boer) calculated in practice? Can you show a worked example?
- Inputs: Weight 80 kg, Height 180 cm, Sex Male → Result: Lean body mass 61.4 kg（Formula (Boer): 0.407·wt + 0.267·ht − 19.2） Inputs: Weight 80 kg, Height 180 cm, Sex Female → Result: Lean body mass 57.0 kg（Formula (Boer): 0.252·wt + 0.473·ht − 48.3）