Free BMI Calculator
Calculate your Body Mass Index using metric or imperial units.
What Is BMI?
Body Mass Index (BMI) is a screening measure calculated from a person’s weight and height. It can help identify weight categories, but it does not directly measure body fat or determine overall health.
BMI Formula
\[ BMI=\frac{\text{Weight (kg)}}{\text{Height (m)}^2} \]
Adult BMI Categories
| BMI | Category |
|---|---|
| Below 18.5 | Underweight |
| 18.5–24.9 | Healthy weight |
| 25.0–29.9 | Overweight |
| 30.0 or above | Obesity |
These are standard adult categories; BMI should be interpreted with other health information.