Ideal Weight Calculator

This uses the Devine formula (1974), the most common clinical reference for "ideal" body weight. It was originally created to estimate a dosing weight for gentamicin and other medications, not as a personal fitness goal — actual healthy weight varies with frame size, muscle mass, and other individual factors, so treat this as a population-average reference range rather than a target number.

Devine isn't the only formula in clinical use — Robinson (1983), Miller (1983), and Hamwi (1964) all estimate the same general concept with slightly different coefficients, so if you see a different number on another calculator, it's likely just using one of those instead. None is more "correct" than the others; they're different population-average approximations of the same rough idea.

Source: McCarron, M.M., & Devine, B.J. (1974). Clinical Pharmacy Case Studies: Case Number 25, Gentamicin Therapy. Drug Intelligence & Clinical Pharmacy, 8(11), 650–655. Commonly cited in shorthand as "Devine, B.J. (1974)."

Read more on its clinical origin →