Enter your details above to see your result.
How it works
The Devine formula estimates ideal body weight (IBW) from height and sex. Adjusted body weight (AdjBW = IBW + 0.25 × (actual − IBW)) is used in clinical nutrition when actual weight is well above IBW, e.g. for some energy and protein calculations. These are reference estimates, not targets for any individual.
| Component | Value |
|---|---|
| Men, base (at 5 ft) | 50 kg |
| Women, base (at 5 ft) | 45.5 kg |
| Per inch over 5 ft | +2.3 kg |
How it's calculated
We use the Devine formula: a base of 50 kg (men) or 45.5 kg (women) for the first 152 cm (5 ft) of height, plus 2.3 kg for each additional inch. 'Ideal' here is a clinical reference point, not a personal target.
How to use this calculator
- Enter your details — such as age, weight, and height — in the fields above.
- Choose any options that apply, like your activity level, goal, or formula.
- Read your result instantly. It updates as you type — no sign-up required.
Sources: Devine BJ. Gentamicin therapy. Drug Intell Clin Pharm. 1974;8:650–655 (origin of the Devine ideal-body-weight formula).
These calculators give general estimates for healthy adults and are not medical or dietary advice. For individual guidance, consult a registered dietitian or your healthcare provider.
Reviewed by the NutraPlanner nutrition team. · Last updated 2026-06-17
Frequently asked questions
What is ideal body weight (IBW)?
IBW is a reference weight estimated from height and sex — here via the Devine formula. It's a clinical starting point (e.g. for some medication and nutrition calculations), not a personal goal weight.
What is adjusted body weight?
Adjusted body weight = IBW + 0.25 × (actual − IBW). Dietitians use it when actual weight is well above IBW, so energy and protein estimates aren't skewed by excess adipose tissue.
Should I aim for my ideal body weight?
Not necessarily — IBW is a population reference, not a target for any individual. A healthy weight depends on body composition, health, and goals; discuss with a dietitian or clinician.