Online Tools

    Ideal Weight Calculator

    Compare adult ideal body weight formulas including Devine, Robinson, Miller, Hamwi, Broca and Lorentz, with a healthy BMI range for context.

    Ideal body weight formulas

    This calculator is built for formula comparison. It estimates adult ideal body weight with Devine, Robinson, Miller, Hamwi, Broca and Lorentz equations, then shows the adult healthy BMI range beside those formula values.

    Devine, Robinson, Miller and Hamwi use sex-specific constants and height above 5 feet.

    The healthy BMI range is shown as context, not as an ideal-weight formula.

    Not a goal prescription
    Ideal body weight is a reference estimate, not medical advice, diagnosis or a required weight-loss target. It does not measure muscle, body fat, bone size, edema, pregnancy changes or eating-disorder risk.

    How to read the result

    • Use the formula range to see how much the estimate depends on the equation.
    • Use the healthy BMI range as adult screening context, not as proof of health.
    • Use body-fat, lean-mass and waist tools when body composition matters more than a height-only formula.
    Formula familyWhat it providesMain limitation
    Devine, Robinson, Miller, HamwiIBW-style reference weights from height and sexNo direct body-composition measurement
    Broca and LorentzHistorical height-based estimatesCruder than modern screening context
    BMI rangeAdult weight range for BMI 18.5 to 24.9Screening only; may misclassify some individuals

    Frequently Asked Questions

    Sources and References

    Calculations are based on the listed reference sources. Links open in a new tab.

    Updated:

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