About these formulas: Devine, Robinson, Miller, and Hamwi are population-average estimates from decades-old clinical formulas — not individualized medical targets. Muscle mass, frame size, body composition, and personal health goals vary widely, so treat these numbers as a general reference, not a prescription. Consult a healthcare provider for personalized guidance.
Each formula starts from a base weight at 5 feet (60 in) tall, then adds a fixed amount for every inch above that.
| Formula | Men — Base | Men — Per Inch Over 5ft | Women — Base | Women — Per Inch Over 5ft |
|---|---|---|---|---|
| Devine | 50 kg | +2.3 kg | 45.5 kg | +2.3 kg |
| Robinson | 52 kg | +1.9 kg | 49 kg | +1.7 kg |
| Miller | 56.2 kg | +1.41 kg | 53.1 kg | +1.36 kg |
| Hamwi | 48 kg | +2.7 kg | 45.5 kg | +2.2 kg |
Devine, Robinson, Miller and Hamwi are all long-standing population formulas that don't fully agree with each other. Showing all four, plus their average, is more honest than picking one and implying it's uniquely correct.
All four formulas are built as a base weight at 5 ft plus an adjustment per inch above that. Under 5 ft, that adjustment term goes negative — a known quirk of these decades-old formulas, not a sign they stop applying to shorter people.
No. These are population-average equations from mid-20th-century medical literature, not personalized targets. Body composition, frame size and your own health goals matter far more than matching one of these numbers exactly.
Each formula uses a different base constant and per-inch adjustment for each sex, reflecting the average body composition differences the original studies were built from.
