Ideal Body Weight (IBW) Metric (kg/cm) Imperial (lbs/in) Gender Male Female Formula Hamwi (1964) Devine (1974) Robinson (1983) Miller (1983) Lemmens (2005) Height (cm) Height (inches) Calculate Clinical Guidelines Ideal Body Weight is used for: Mechanical ventilation settings Nutritional requirements Drug dosing calculations Renal replacement therapy Note: These formulas apply to adults 18+ and don't account for muscle mass or body composition.