About the BMI Calculator
The BMI Calculator applies the standard weight-to-height-squared formula and labels common adult screening ranges. BMI is a broad screening measure, not a diagnosis or a direct body-fat measurement.
How to use the BMI Calculator
- Select metric or US customary units.
- Enter weight and height in the labels shown.
- Calculate and interpret the range with personal clinical context.
Practical tips
- Use a recent weight and an accurate standing height.
- Athletes, pregnant people and children require context beyond adult BMI categories.