Body mass index (BMI) is often used to diagnose obesity. To calculate BMI, multiply weight in pounds by 703, divide by height in inches and then divide again by height in inches. Or divide weight in kilograms by height in meters squared. BMI 


BMI
Weight status




Below 18.5
Underweight


18.5-24.9
Normal


25.0-29.9
Overweight


30.0 and higher
Obesity


 

BMI
Weight status

 
BMI
Weight status
 BMI BMI Weight status 

Below 18.5
Underweight


18.5-24.9
Normal


25.0-29.9
Overweight


30.0 and higher
Obesity

 
Below 18.5
Underweight
 Below 18.5 Underweight 
18.5-24.9
Normal
 18.5-24.9 Normal 
25.0-29.9
Overweight
 25.0-29.9 Overweight 
30.0 and higher
Obesity
 30.0 and higher Obesity Asians with BMI of 23 or higher may have an increased risk of health problems. BMI For most people, BMI provides a reasonable estimate of body fat. However, BMI doesn't directly measure body fat, so some people, such as muscular athletes, may have a BMI in the obesity category even though they don't have excess body fat. BMI BMI BMI Many doctors also measure a person's waist circumference to help guide treatment decisions. Weight-related health problems are more common in men with a waist circumference over 40 inches (102 centimeters) and in women with a waist measurement over 35 inches (89 centimeters).