Health · Ideal body weight

Ideal weight calculator

Enter your height and gender to see your ideal body weight from four well-known medical formulas.

Your details

Average ideal weight
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Devine (1974)—
Robinson (1983)—
Miller (1983)—
Hamwi (1964)—

Rough sheet

step-by-step
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About the four formulas used

This calculator runs your height and sex through four well-known ideal-weight formulas — Devine (1974), Robinson (1983), Miller (1983), and Hamwi (1964) — each developed for slightly different clinical purposes, mainly to help estimate medication dosing by body weight rather than to define a personal weight goal. Showing all four side by side makes clear that "ideal weight" was never meant to be a single precise number; the formulas can disagree by several pounds for the same height.

Frequently asked questions

None is definitively best — each was derived from a different population. Averaging the Devine, Robinson, Miller, and Hamwi formulas, as this calculator does, gives a reasonable general estimate.

Yes, toggle between metric (cm/kg) and imperial (ft, in, lb) at the top of the calculator.