This tool is for informational use only and is not medical advice. Auburn AI is not a healthcare provider. For anything that affects your health, talk to your doctor or a qualified Canadian health professional.
BMI Calculator
Body Mass Index with metric or imperial units.
How to use
Runs entirely in your browser. Live updates or click to run. No signup, no tracking, no data sent anywhere.
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Part of 71 free tools by Auburn AI. Category: Calculators
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About this tool
The BMI Calculator takes your height and weight and returns your body mass index, a simple ratio used widely by doctors, nurses, and public health workers to screen for underweight, healthy weight, overweight, and obesity categories. It works in both metric and imperial units, so no conversion is needed before you start. It is straightforward enough for anyone to use without a health background.
How to use it
- Select your preferred unit system, either metric (cm, kg) or imperial (ft, in, lbs).
- Enter your height using the provided fields for your chosen unit system.
- Enter your current body weight in the matching unit field.
- Click Calculate to instantly see your BMI score and weight category.
- Review the category chart shown below the result to understand where your score sits.
- Use the Reset button to clear values and run a new calculation anytime.
Pro tips
- BMI uses total body weight, so heavily muscled individuals will often score in overweight ranges despite low body fat.
- Track your BMI over several months rather than a single reading to spot meaningful trends in your health data.