BMI Calculator
Get BMI value, category and healthy weight range as you type.
FREE - NO SIGN-UP - RUNS ON YOUR DEVICE
Your entries stay on your device
- Liveupdates as you type
- 0data uploaded
- 1clear result
- Freeno account needed
What you can count on
- 0data sent
- Calculations run in this browser
- Entries stay on this device
- Liveresult
- Figures update as values change
- Copy the summary when ready
- Clearmethod
- Inputs and formula basis shown
- Estimate, not medical advice
BMI Calculator at a glance
- Input
- Height and weight, metric or imperial
- Output
- BMI, its category, healthy weight range
- Health notice
- Estimate, not medical advice
- Processing
- Runs locally in your browser
- Band edges
- 18.5 / 25 / 30
- Price
- Free
- Account required
- No
How to use BMI Calculator
- 1
Enter your values
Enter height and weight in metric or imperial units.
- 2
Review the estimate
See a BMI estimate, its reference category, and a healthy weight range for the entered height.
- 3
Copy the result
Use Copy result to save the displayed summary for your own notes.
Frequently asked questions
Is this result medical advice?
No. It is a general estimate based on the values and formula shown. A qualified health professional can interpret measurements for your circumstances.
Are my entries uploaded?
No. The calculation runs in your current browser tab, and the tool does not send the values to a server.
Why might my result differ elsewhere?
Methods, rounding and reference assumptions vary. Check the selected units and inputs, then treat the result as an estimate rather than a diagnosis.
Understanding the estimate
Enter height and weight in metric or imperial units. See a BMI estimate, its reference category, and a healthy weight range for the entered height. This calculator provides an estimate, not medical advice.
- The result follows the method named in the tool and rounds figures for easy reading.
- Personal circumstances vary, so use the figure as a general reference and not a diagnosis.
Full specification
| Input | Enter height and weight in metric or imperial units. |
|---|---|
| Output | See a BMI estimate, its reference category, and a healthy weight range for the entered height. |
| Health notice | This result is an estimate for general information and is not medical advice. |
| Processing | All calculations run locally in the current browser tab. |
| Band edges | Below 18.5, 18.5 to under 25, 25 to under 30, and 30 or above. The healthy-weight range is worked from 18.5 to 24.9. |
| Price | Free |
| Account required | No |
Keep going with the same files
All health tools: Health tools on SPOTTOOLS