Ideal Weight Calculator
Calculate your ideal body weight using 4 clinical formulas — Devine, Robinson, Miller, and Hamwi. Supports metric and imperial. See how each formula compares and what doctors use most.
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Frequently asked questions about ideal weight calculator.
What does ideal weight actually mean?
Ideal weight is a reference estimate based mainly on height and sex, using older clinical formulas. It can be helpful for context, but it is not a perfect measure of health, fitness, body composition, or how you personally should look.
Why are there multiple ideal weight formulas?
Different formulas were created in different clinical settings and time periods. Devine, Robinson, Miller, and Hamwi use slightly different assumptions, so showing several methods gives a more realistic range instead of pretending there is one exact target.
Is ideal weight the same as a healthy BMI range?
No. Ideal-weight formulas estimate a single target or narrow range, while the healthy BMI range shows a broader span of body weights associated with lower health risk for most adults. Both are rough guides, not diagnoses.
Should athletes use ideal weight formulas?
With caution. Muscular people, larger-framed individuals, and athletes can sit outside these formula targets while still being very healthy. Body composition, performance, and medical context matter more than a single number.
Which formula do doctors use most often?
The Devine formula is still commonly referenced in clinical settings, especially for medication dosing and quick estimates, but clinicians often consider multiple measures rather than relying on a single ideal-weight formula alone.