Skip to main content
BMI calculator online tool showing height weight inputs and calculated BMI

BMI Calculator

Calculate body mass index from your height and weight.

Body measurements

How to Use the BMI Calculator in 4 Steps

  1. 1

    Enter height.

    Add your supported height measurement.

  2. 2

    Enter weight.

    Add your supported weight measurement.

  3. 3

    Run the BMI calculation.

    Process the inputs with the tool.

  4. 4

    Review the resulting value and interpret it cautiously.

    Treat BMI as a screening measure only.