Estimate an "ideal" body weight from your height and sex. This figure comes from the Devine formula, originally created in 1974 for drug dosing calculations and later repurposed as a weight reference. Use it as one data point — never as a rigid target.
Estimated ideal body weight (Devine)
Approximate healthy weight range: 59.3 kg – 72.5 kg
Based on the Devine formula (1974), originally developed for drug dosing. Treat this as a rough guide only — ideal weight is a contested concept. BMI, body composition, and waist circumference matter more than any single target number.
The Devine formula assumes a baseline weight at 5 ft tall and adds a fixed amount per inch above that, adjusted for sex:
We also show a ~10% healthy band around that midpoint, since any single-number target is arbitrary and bodies vary.
"Ideal body weight" is an old clinical shortcut, not a biological truth. Different formulas (Devine, Robinson, Miller, Hamwi, and several others) give different answers for the same person — sometimes by several kilograms. None of them account for muscle mass, bone density, body-frame size, ethnicity, or age. A muscular 80 kg person and a lightly-built 80 kg person have the same Devine "ideal" but very different health profiles.
BMI and body composition tell you more than a single target number, and waist-to-height ratio is a better predictor of metabolic risk for many people. Use this calculator as a sanity-check alongside our BMI calculator, BMR calculator, and calorie calculator, and talk to your doctor before pursuing a specific weight goal.