Ideal and Adjusted Body Weight Calculator (Devine)
Enter height, sex and actual weight to get ideal and adjusted body weight.
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Ideal and Adjusted Body Weight Calculator (Devine) by TheCalcTools
How the Ideal and Adjusted Body Weight Calculator (Devine) works
The Devine formula gives ideal body weight as 50 kg (men) or 45.5 kg (women) plus 2.3 kg for each inch of height over 5 feet. It was designed for drug dosing, not as a health target.
For people well above their ideal weight, some drugs are dosed on adjusted body weight: ideal weight plus 40% of the excess. Always follow the drug-specific guidance.
The formula
Worked example
Using the default values shown in the calculator:
| Sex | Male |
|---|---|
| Height | 175 |
| Actual weight | 110 |
- 175 cm = 68.9 in: IBW = 50 + 2.3 × 8.9 = 70.5 kg.
- AdjBW = 70.5 + 0.4 × (110 − 70.5) = 86.3 kg.
Result:
| Ideal body weight (kg) | 70.5 |
|---|---|
| Adjusted body weight (kg) | 86.3 |
| Actual weight as % of ideal | 156% |
| Which weight is usually used | Adjusted (actual weight is above 120% of ideal) |
Frequently asked questions
Is this my healthy weight?
Not exactly. It is a dosing reference. Use the healthy weight range calculator for a BMI-based range.
Sources and further reading
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This calculator gives general estimates for information and education. It is not medical advice and does not diagnose anything. Talk to a qualified health professional about your own situation. See our disclaimer.