Ideal body weight calculator

Ideal Body Weight

Ideal Body Weight / Adjusted Body Weight

Parameter	Value
Sex	1 Male   Female
Height (inches) — total inches, e.g. 70 for 5'10"
Actual Weight (kg) — for adjusted BW
Results
Ideal Body Weight (Devine)	kg
Adjusted Body Weight (IBW + 0.4 × [ABW − IBW])	kg

References
Devine BJ. Gentamicin therapy. Drug Intell Clin Pharm. 1974;8:650-655. Male IBW = 50 kg + 2.3 kg per inch over 5 feet. Female IBW = 45.5 kg + 2.3 kg per inch over 5 feet. Adjusted BW = IBW + 0.4 × (Actual BW − IBW). Used for drug dosing in obese patients (e.g., vancomycin, aminoglycosides). Tidal volume dosing: Use IBW for ventilator settings (6–8 mL/kg IBW per ARDSNet protocol).