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    Ideal Body Weight and Adjusted Body Weight

    Calculates ideal body weight (Devine formula) and adjusted body weight.
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    INSTRUCTIONS

    To calculate tidal volume by ideal body weight, use the ETT Depth and Tidal Volume Calculator.

    When to Use
    Pearls/Pitfalls
    Why Use

    This formula is only an approximation, and is generally only applicable for people ≥60 inches (5 feet) tall. For patients under 5 feet, one commonly-used modification is to subtract 2-5 lbs for each inch below 60 inches (written communication with leading expert Dr. Manjunath Pai, 2018).

    • 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.
    • Ideal body weight is the standard weight measurement in many clinical calculations, such as tidal volume.
    While many medications are weight-based, often they are recommended to be dosed on ideal body weight.
    Female
    Male
    in
    lbs

    Result:

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    Next Steps
    Evidence
    Creator Insights

    Advice

    Confirm medication dosing with pharmacy: some medication dosing uses ideal body weight while others use actual body weight.
    About the Creator
    Dr. Manjunath Pai
    Are you Dr. Manjunath Pai?