How this calculation works
Calculate adult body mass index and show the standard screening category. The result is calculated locally in your browser from the visible inputs, and the method below remains available for checking.
Worked example
70 kg at 175 cm gives BMI 22.9, within the standard adult healthy screening range.
Assumptions and limits
- Inputs use the units shown beside each field.
- Intermediate values retain precision; displayed values are rounded for readability.
Questions people ask
How does the BMI Calculator work?
It applies this displayed method: BMI = weight in kilograms ÷ height in metres². Values stay in your browser and are not submitted to a server.
What should I check before using the BMI result?
Inputs use the units shown beside each field. Intermediate values retain precision; displayed values are rounded for readability. This is a general adult estimate, not a diagnosis or personalised medical advice. Seek a qualified clinician for health decisions.
Does this BMI calculator save my information?
No. Calculation inputs are processed on this device. Sharing creates a URL only when you choose the share action.