Ideal weight formulas
Each formula starts from a base weight at 5 feet (152.4 cm) and adds a fixed amount for every inch above that.
| Formula | Men | Women |
|---|---|---|
| Devine (1974) | 50 kg + 2.3 kg per inch | 45.5 kg + 2.3 kg per inch |
| Robinson (1983) | 52 kg + 1.9 kg per inch | 49 kg + 1.7 kg per inch |
| Miller (1983) | 56.2 kg + 1.41 kg per inch | 53.1 kg + 1.36 kg per inch |
| Hamwi (1964) | 48 kg + 2.7 kg per inch | 45.5 kg + 2.2 kg per inch |
These formulas were originally created to calculate medicine doses, not to define a perfect weight. They ignore age, muscle and frame size, so the healthy BMI range (18.5–24.9) is shown as a broader guide.
This calculator gives general information for healthy adults. It is not medical advice. Talk to a doctor or registered dietitian before making significant changes to your diet or exercise.