What This Calculator Estimates
This calculator estimates body mass index from height and weight. It can help with general health screening, but it is not a diagnosis.
How to Use This Calculator
- Select the height and weight units you want to use.
- Enter current height and weight values.
- Click Calculate BMI to view the estimate.
- Review the category shown with the result.
- Use the estimate as informational screening only.
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Frequently Asked Questions
What does BMI estimate?
BMI estimates body size relative to height and weight using a simple screening formula.
Is BMI a diagnosis?
No. BMI is an informational screening measure and not a medical diagnosis.
Can athletic body types affect BMI?
Yes. Muscle mass and body composition can make BMI less representative for some people.
Should I use metric or imperial units?
Use whichever units you know best. The calculator converts them into the same estimate.
When should I recalculate BMI?
Recalculate when your height or weight changes enough to matter for your estimate.
This calculator provides informational health estimates only and is not medical advice. Consider professional guidance for personal health decisions.
Last updated: May 11, 2026