Health tool
Ideal Weight Calculator
Estimates from three well-known formulas, shown side by side since they don't always agree.
—Devine formula
—Robinson formula
—Hamwi formula
Why the three numbers differ
Devine, Robinson, and Hamwi are all decades-old formulas developed for different clinical purposes (originally for medication dosing), and none accounts for body frame or muscle mass — treat the spread between them as a rough range rather than a single target.