Ideal body weight (IBW) and Adjusted body weight calculator

Ideal Body Weight & Adjusted Body Weight

Height     Weight:


Ideal body weight

Estimate Ideal body weight in (kg)
Males: IBW = 50 kg + 2.3 kg for each inch over 5 feet.
Females: IBW = 45.5 kg + 2.3 kg for each inch over 5 feet.

Devine BJ. Gentamicin therapy. DICP. 1974; 8:650–5.

Adjusted body weight

AjBW = adjusted body weight:
AjBW = IBW + 0.4( ABW - IBW)

1) Bauer LA. Applied clinical pharmacokinetics. New York: McGraw Hill, Medical Publishing Division; 2001:93-179.

2) Winter, M.E., 2004. Basic pharmacokinetics. London: Lippincott Williams and Williams.

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