⚖️ Ideal Weight Calculator
Ideal Weight Formulas
These formulas estimate ideal body weight based on height and sex. They were originally developed in clinical settings (primarily for drug dosing) and should be used as general guides rather than strict targets.
| Formula | Male Base (5ft/152cm) | Per Inch/2.5cm |
|---|---|---|
| Devine (1974) | 50 kg | +2.3 kg |
| Robinson (1983) | 52 kg | +1.9 kg |
| Miller (1983) | 56.2 kg | +1.41 kg |
| Hamwi (1964) | 48 kg | +2.7 kg |
⚠️ Ideal weight is highly individual. Athletic builds may exceed these ranges while remaining healthy. Consult a healthcare provider for personal advice.
Frequently Asked Questions
This calculator uses four established medical formulas: Devine (1974, commonly used in drug dosing), Robinson (1983), Miller (1983), and Hamwi (1964). Each gives a slightly different result — the range they span gives you a practical target zone.
No. Ideal weight varies based on body frame size, muscle mass, age, and individual health factors. The formulas give estimates based on height and sex. A healthy weight range is more useful than a single target number.
Most ideal weight formulas target a BMI of roughly 21–23, which falls in the middle of the 'Normal' BMI range (18.5–24.9). However, body composition (muscle vs fat) matters more than the number on the scale.
These formulas were designed for adults and don't adjust for age. In practice, some doctors allow for slightly higher weight in older adults, as being slightly overweight can be protective against bone loss and illness recovery.