Understanding This Calculator
The Devine formula was developed in 1974 to help clinicians calculate medication dosages based on lean body size rather than actual weight, which can be skewed by fat or fluid retention. It has since become a common reference point for ‘ideal’ weight ranges, though it’s a population average, not a personal prescription.
Frame size, muscle mass, and individual health goals all matter more than hitting an exact number — treat the result as a reference range, not a target.
- height in height in inches
- 60 baseline of 5 feet
- 2.3 kg added per inch above 5 ft
| Height | Men (IBW) | Women (IBW) |
|---|---|---|
| 5’4″ (163cm) | 61.4 kg | 56.9 kg |
| 5’8″ (173cm) | 70.8 kg | 66.3 kg |
| 6’0″ (183cm) | 80.2 kg | 75.7 kg |
Frequently Asked Questions
Is the Devine formula still used today?
Yes — it’s still the standard for calculating medication dosing (like chemotherapy) in clinical settings because it correlates well with lean body mass, which drives drug metabolism.
Should I try to hit my exact ‘ideal weight’?
Not necessarily. It doesn’t account for muscle mass, bone structure, or body composition. Combine it with body fat % and how you feel functionally rather than chasing a single number.