Body Mass Index (BMI) is a simple index of weight-for-height that is commonly used to classify underweight, overweight and obesity in adults.

BMI Categories (WHO Standard)

• Underweight: < 18.5
• Normal weight: 18.5 - 24.9
• Overweight: 25.0 - 29.9
• Obesity: >= 30.0

Note: BMI is a useful measure of overweight and obesity. It is calculated from your height and weight. BMI is an estimate of body fat and a good gauge of your risk for diseases that can occur with more body fat.