BMI Calculator
Use the BMI Calculator to quickly find your body mass index and assess your weight category for health insights.
BMI Range by Category
| Category | BMI Range |
|---|---|
| Underweight | Less than 18.5 |
| Normal weight | 18.5 – 24.9 |
| Overweight | 25.0 – 29.9 |
| Obesity Class I (Moderate) | 30.0 – 34.9 |
| Obesity Class II (Severe) | 35.0 – 39.9 |
| Obesity Class III (Very Severe) | 40.0 and above |
Important Tip:
BMI is a useful starting point for understanding body weight in relation to height, but it does not measure body fat percentage, muscle mass, or overall health.
For a more complete picture of your fitness and wellness, consider using additional tools like body fat percentage calculators or waist-to-height ratio checks.
What is the value of measuring BMI?
Body Mass Index (BMI) is a simple tool used to estimate whether a person’s weight is within a healthy range based on height.
It helps quickly identify if someone is underweight, normal weight, overweight, or obese.
Although BMI doesn’t directly measure body fat, it is widely used because it’s easy to calculate and provides a general picture of potential health risks associated with weight.
Where do the BMI recommendations come from?
BMI recommendations are based on guidelines from major health organizations such as the World Health Organization (WHO) and the Centers for Disease Control and Prevention (CDC).
These organizations analyzed large studies linking BMI ranges to health outcomes like disease risk and life expectancy, and created standard categories (underweight, normal, overweight, obese) to guide public health efforts.
