What the BMI calculator shows
The BMI calculator gives a quick adult weight-to-height estimate: underweight, normal range, overweight and obesity. It is a free self-check tool that works directly in the browser, with no sign-up and no data upload.
How to use it
- Enter height in centimeters.
- Enter weight in kilograms.
- Optionally add age: the tool warns when the adult scale is not suitable.
- Run the calculation and check BMI, category and the estimated healthy weight range.