BMI Calculator
Calculate Body Mass Index from weight and height, in metric or imperial units, and see which standard category it falls into. Nothing is stored.
- Runs entirely in your browser
- No sign-up, no watermark
- Free and unlimited
🔒 Your file stays on your device
How to use BMI Calculator
- 1
Open BMI Calculator and fill in the fields.
- 2
Pick any options that apply.
- 3
Read the result straight away — it recalculates as you type.
What you get
- Metric or imperial
- Standard WHO categories
- Instant, private
What happens to your files
This tool runs entirely in your browser. The file you choose is read into memory, processed on your device, and offered back as a download. Nothing is uploaded and nothing is kept once you leave the page.
There is no account, no email, no watermark and no daily limit. Come back whenever you need it.
Frequently asked questions
- Is BMI a diagnosis?
- No. BMI is a rough screening figure that doesn't account for muscle mass, age or body composition. Treat it as a starting point, not medical advice.