⚖️ Adjusted Body Weight
Calculate adjusted body weight for drug dosing in obesity.
Adjusted Body Weight
Height (cm)
Actual body weight (kg)
Sex
When to use
Dose drugs that use adjusted body weight (e.g. aminoglycosides).
How it works
AdjBW = IBW + 0.4 × (actual − IBW); IBW from the Devine formula.
Key points
- The correct dosing weight is drug-specific.
- IBW uses height and sex (Devine).
- Verify against each drug's reference.
References
Decision support for licensed clinicians only; not a substitute for clinical judgement, diagnosis or local protocols.