BMI Calculator
Calculate body mass index. Metric and imperial units, with a clear category indicator.
Calculate body mass index in metric or imperial units with a clear category indicator and a horizontal scale showing where your value falls. Includes a brief explainer noting BMI is a rough indicator and not medical advice.
When to use it
- 1Quick personal reference for a fitness or wellness goal.
- 2Showing the impact of a weight change on the BMI category.
- 3A first-pass screen before talking to a doctor about body composition.
How it works
- 1
Pick units
Metric (cm/kg) or imperial (ft+in/lb). The form adapts.
- 2
Enter height and weight
BMI updates as you type. The category label is color-coded.
- 3
See where you fall
The horizontal scale visualizes underweight through obese class III with your value marked.
Frequently asked
Is BMI a good measure of health?
It is one signal among many. Athletes and very tall or short people tend to score off-trend. Always pair BMI with other measures.
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