What is Ideal Body Weight?
Ideal body weight (IBW) is a clinical estimate of the most healthy weight for a given height and gender. It is used by healthcare professionals for drug dosing, anesthesia, ventilator settings, and general health benchmarking. However, it is not a one-size-fits-all answer.
The 4 Clinical Formulas Compared
- Hamwi (1964): The oldest and most commonly referenced. Used in clinical settings worldwide.
- Devine (1974): Originally developed for medication dosing. Widely used in pharmacology.
- Robinson (1983): A modified Devine formula, producing slightly different results for each gender.
- Miller (1983): Generally produces the lowest (lightest) estimate of the four formulas.
IBW vs. BMI vs. Body Fat %
IBW formulas don't account for muscle mass or body composition. A muscular athlete may weigh more than their IBW while having an excellent health profile. Body fat percentage is a more accurate health indicator than weight alone.