BMI Calculator BMI Calculator Enter Your Details Unit System: Metric Imperial Weight (kg): Height (cm): Weight (lbs): Height (ft): Inches: Calculate BMI Your BMI Result - - Underweight: BMI less than 18.5 Normal weight: BMI 18.5 to 24.9 Overweight: BMI 25 to 29.9 Obese: BMI 30 or greater Note: BMI is a simple index of weight-for-height that is commonly used to classify underweight, overweight, and obesity in adults. Advertisement Space