BMI Calculator

Understanding Your BMI

Body Mass Index (BMI) is a measure of body fat based on height and weight that applies to adult men and women.

• Underweight: BMI less than 18.5
• Normal weight: BMI 18.5 to 24.9
• Overweight: BMI 25 to 29.9
• Obesity: BMI 30 or greater

While BMI is a useful screening tool, it does have limitations. It may overestimate body fat in athletes and others with a muscular build, and underestimate body fat in older persons and others who have lost muscle.