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Health & FitnessFormula-based · Runs in your browser

Healthy Weight Calculator

Calculate the adult weight interval corresponding to BMI 18.5 through 24.9 and compare adjacent BMI categories.

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Inputs

Enter the values you know. Optional fields may be left empty.

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Required
Required
cm

Result

Updates as valid inputs change.

Calculated locally
This is an adult BMI screening range, not a personalized target or diagnosis.
Healthy-weight range
—
Range midpoint
—
Underweight is below
—
Overweight starts at
—
Obesity starts at
—

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Calculation steps

Follow what happened from the selected formula to the displayed answer.

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  1. 1

    Formula selected

    The calculator uses the following formula or method.

    weight = target BMI × height², using BMI 18.5 and 24.9 for the adult healthy-weight interval.

  2. 2

    Values entered

    Your values are placed into the calculation.

    Enter values to see what is used in this step.

  3. 3

    Result calculated

    The formula or method produces the following result values.

    Results will appear after a successful calculation.

  4. 4

    Answer formatted

    Displayed values are rounded and formatted using each output’s configured precision.

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Data and privacy

How it works

The calculator rearranges the BMI equation to find the weights corresponding to adult BMI values of 18.5 and 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

4
  • ?unitSystem= Units

    Choice · Required · Default: metric · Accepted values: metric, imperial

  • ?heightCm= Height

    Number · Required · Default: 175 · Used when unitSystem = metric

  • ?feet= Height feet

    Number · Required · Default: 5 · Used when unitSystem = imperial

  • ?inches= Height inches

    Number · Required · Default: 9 · Used when unitSystem = imperial

Outputs

5
  • healthyRange Healthy-weight range

    Text · Primary output

  • midpoint Range midpoint

    Text

  • underweightUpper Underweight is below

    Text

  • overweightStarts Overweight starts at

    Text

  • obesityStarts Obesity starts at

    Text

Important context

A BMI range is a population screening tool. It is not a prescription for an individual and does not directly measure body fat or health.

Sources
Limitations
  • This is an adult BMI screening range, not a personalized target or diagnosis.
  • Health results are educational estimates, not a diagnosis or treatment recommendation. Individual circumstances may require a qualified clinician's assessment.

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