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    Ideal Body Weight

    Calculates ideal body weight by the Devine formula.
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    When to Use
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    Why Use

    This formula is only an approximation, and is generally only applicable for people 60 inches (5 foot) tall or greater.

    There are multiple ideal body weight formulas that have been developed; they all have different caveats and problems. Your hospital may use a slightly different formula based on its local population.
    While many medications are weight-based, often they are recommended to be dosed on ideal body weight.
    in
    mL/kg

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    Creator Insights

    Advice

    Confirm medication dosing with pharmacy: some medication dosing uses ideal body weight while others use actual body weight.

    Formula

    The Dr. Devine formula:

    • Ideal Body Weight (men) = 50kg + 2.3kg*( Height(in) - 60 )
    • Ideal Body Weight (women) = 45.5kg + 2.3kg *( Height(in) - 60 )
    • Note: this formula is only an approximation, and is generally only applicable for people 60 inches (5 foot) tall or greater.
    Dr. Manjunath Pai

    About the Creator

    Leading expert on the Ideal Body Weight calculator:

    Manjunath Pai, PharmD, is a professor in the Department of Pharmacy Practice at the Albany College of Pharmacy. He is the author of “The Origin of the 'Ideal' Body Weight Equations”, a comprehensive literature review on the creation of and iterations to the ideal body weight formula over time. Dr. Pai conducts research on the optimization of antimicrobial drug dosing, most recently in the obese population.

    To view Dr. Manjunath Pai's publications, visit PubMed