Ideal body weight and approximate lean body weight in obesity (adult)

	Height (in)	Height (cm)	IBW* (kg)	Approximate LBW in class III obesity^¶ (kg)
Female (adult)	60	152	46	52
	65	165	57	60
	70	178	68	70
	75	191	80	80
Male (adult)	60	152	50	63
	65	165	62	73
	70	177	76	85
	75	191	89	97
	80	203	103	112

IBW: ideal body weight; LBW: lean body weight; TBW: total body weight; BMI: body mass index
* IBW male = 50 + (2.3 x height in inches over 5 feet); IBW female = 45.5 + (2.3 x height in inches over 5 feet).
¶ Approximate LBW in class III obesity (BMI 40-45 kg/m2) for dosing emergency drugs; LBW estimate (kg) = (9270 x TBW)/(A + B x BMI) where A and B are 6680 and 216 respectively for males and 8780 and 244 respectively for females.

Formulas from: Devine BJ. Drug Intell Clin Pharm 1974; 8:560 and Hanley, MJ et al. Clin Pharmacokinet 2010; 49:71.

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Ideal body weight and approximate lean body weight in obesity (adult)