⚖️ Ideal & Adjusted Body Weight (Devine)
Calculate ideal and adjusted body weight (Devine) for medication and ventilator settings.
Clinical takeaway
IBW is used for tidal-volume (mL/kg) and some drugs.
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When to use
Weight-based dosing and tidal-volume calculations.
How it works
Devine IBW = (50 male / 45.5 female) + 2.3 × (height in inches − 60). Adjusted BW = IBW + 0.4 × (actual − IBW).
Key points
- IBW is used for tidal-volume (mL/kg) and some drugs.
- Adjusted BW is common for dosing in obesity.
- Always follow the specific drug's weight basis.
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.
| Height | 175 cm |
|---|---|
| Actual weight | 90 kg |
| Sex | Male |
→Ideal body weight70.5kg
- Formula：Devine: 50 + 2.3·(height in − 60)
- Adjusted body weight：78.3 kg (IBW + 0.4·(actual − IBW))
| Height | 175 cm |
|---|---|
| Actual weight | 90 kg |
| Sex | Female |
→Ideal body weight66.0kg
- Formula：Devine: 45.5 + 2.3·(height in − 60)
- Adjusted body weight：75.6 kg (IBW + 0.4·(actual − IBW))
Frequently asked questions
- What is Ideal & Adjusted Body Weight (Devine)?
- Calculate ideal and adjusted body weight (Devine) for medication and ventilator settings.
- How is Ideal & Adjusted Body Weight (Devine) calculated? What is the core formula?
- Devine IBW = (50 male / 45.5 female) + 2.3 × (height in inches − 60). Adjusted BW = IBW + 0.4 × (actual − IBW).
- When is Ideal & Adjusted Body Weight (Devine) used?
- Weight-based dosing and tidal-volume calculations.
- What are the key clinical points for Ideal & Adjusted Body Weight (Devine)?
- IBW is used for tidal-volume (mL/kg) and some drugs. Adjusted BW is common for dosing in obesity. Always follow the specific drug's weight basis.
- What are the limits and cautions when using Ideal & Adjusted Body Weight (Devine)?
- 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 Ideal & Adjusted Body Weight (Devine) calculated in practice? Can you show a worked example?
- Inputs: Height 175 cm, Actual weight 90 kg, Sex Male → Result: Ideal body weight 70.5 kg（Formula: Devine: 50 + 2.3·(height in − 60), Adjusted body weight: 78.3 kg (IBW + 0.4·(actual − IBW))） Inputs: Height 175 cm, Actual weight 90 kg, Sex Female → Result: Ideal body weight 66.0 kg（Formula: Devine: 45.5 + 2.3·(height in − 60), Adjusted body weight: 75.6 kg (IBW + 0.4·(actual − IBW))）