The Four Formulas Explained
Each formula was developed from regression analysis on clinical patient data. They share a common structure: a base weight at 5 feet (152 cm), plus a fixed increment per inch above that height.
| Formula | Year | Male Base (5 ft) | Per Inch (M) | Female Base (5 ft) | Per Inch (F) |
|---|---|---|---|---|---|
| Devine | 1974 | 50.0 kg | +2.3 kg | 45.5 kg | +2.3 kg |
| Robinson | 1983 | 52.0 kg | +1.9 kg | 49.0 kg | +1.7 kg |
| Miller | 1983 | 56.2 kg | +1.41 kg | 53.1 kg | +1.36 kg |
| Hamwi | 1964 | 48.0 kg | +2.7 kg | 45.4 kg | +2.3 kg |
What These Formulas Don't Capture
All four formulas were created before body composition analysis was routine. They don't account for muscle mass, bone density, or age. A 180 cm competitive athlete and a sedentary person of the same height have the same "ideal weight" by these formulas, despite completely different health profiles.
Use these numbers as a rough reference point. Body fat percentage, waist-to-height ratio, and metabolic markers give a more accurate picture. Check your body fat percentage and BMI for a fuller assessment.