How it works
The calculator reports BMI, the adult screening category, BMI Prime, ponderal index, and the weight interval corresponding to BMI 18.5 through 24.9 at the entered height.
Input query strings and outputs
Use an input name in this page’s URL as ?name=value, and join additional inputs with &. Portable shared links may instead use the compact ?ac= state parameter.
Input query strings
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?unitSystem=UnitsChoice · Required · Default: metric · Accepted values: metric, imperial
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?sex=Sex used by equationChoice · Required · Default: male · Accepted values: male, female
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?age=AgeNumber · Required · Default: 30
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?weightKg=WeightNumber · Required · Default: 70 · Used when unitSystem = metric
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?heightCm=HeightNumber · Required · Default: 175 · Used when unitSystem = metric
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?weightLb=WeightNumber · Required · Default: 154 · Used when unitSystem = imperial
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?feet=Height feetNumber · Required · Default: 5 · Used when unitSystem = imperial
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?inches=Height inchesNumber · Required · Default: 9 · Used when unitSystem = imperial
Outputs
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bmiBMINumber · Primary output
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categoryScreening categoryText
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healthyRangeBMI 18.5–24.9 weight rangeText
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bmiPrimeBMI PrimeNumber
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ponderalIndexPonderal indexNumber · Suffix: kg/m³
Limits
BMI does not distinguish fat from muscle or describe fat distribution. Children and teenagers require age- and sex-specific percentile interpretation rather than adult cutoffs.