Ideal Weight Calculator

Where these formulas actually come from

Classic formulas like Devine or Robinson were originally developed to estimate medication dosing by body size, not as personal health targets. They've since been repurposed as general "ideal weight" references, which is worth knowing since that isn't what they were built to measure.

Why one number can't fit everyone

These formulas use height alone and don't account for frame size or muscle mass beyond a basic sex-based split. Two people of the same height can have very different healthy weights depending on build — treat the output as a general reference range, not a personal target.