BMI Calculator
Calculate your Body Mass Index instantly. See your weight category, healthy range, and more.
Advertisement
Height:
Weight:
—
Underweight
<18.5 Normal
18.5–25 Overweight
25–30 Obese
>30
<18.5 Normal
18.5–25 Overweight
25–30 Obese
>30
BMI Reference Chart
| Category | BMI Range | Health Risk |
|---|---|---|
| Underweight | < 18.5 | Malnutrition risk |
| Normal weight | 18.5 – 24.9 | Low risk |
| Overweight | 25.0 – 29.9 | Moderate risk |
| Obese Class I | 30.0 – 34.9 | High risk |
| Obese Class II | 35.0 – 39.9 | Very high risk |
| Obese Class III | ≥ 40.0 | Extremely high risk |
Advertisement
What is BMI?
Body Mass Index (BMI) is a simple numerical value derived from a person's weight and height, widely used as a screening tool to identify potential weight-related health issues in adults.
Metric formula: BMI = weight (kg) ÷ height (m)²
Imperial formula: BMI = 703 × weight (lbs) ÷ height (in)²
BMI is a useful population-level indicator but does not directly measure body fat or account for muscle mass, bone density, age, sex, or fat distribution. Always consult a qualified healthcare professional for personalized health advice.