Ideal Weight Calculator

"How much should I weigh?" doesn't have one true answer, and any calculator giving a single number is oversimplifying. This one shows the honest picture: the four classic clinical formulas — Devine (1974, still used for medication dosing), Robinson (1983), Miller (1983) and Hamwi (1964) — side by side, plus the healthy BMI range for your height, which modern guidance treats as the more meaningful figure precisely because it's a range.

The formulas typically spread across several kilograms for the same height, and that spread is the real lesson: each was derived for a clinical purpose from a particular population, none accounts for muscle mass, frame size or body composition, and "ideal" in their names means "reference point for calculation", not "what you should weigh". A muscular person can be perfectly healthy above every formula's number; a sedentary person can carry health risk within them.

Presented with that context, the numbers are genuinely useful — as anchors for goal-setting, for understanding medication-dosing weight (Devine specifically), and for seeing where the healthy BMI band sits for your height. Metric and imperial supported, results update instantly, and the tool says plainly what a responsible one should: these are reference points; a healthy weight is individual.