Understanding Body Mass Index (BMI)
Body mass index (BMI) is a ratio of your height to your weight. Knowing your BMI is a way of finding whether you are at a healthy weight. The higher your BMI, the greater your risk for weight-related health problems.
What BMI Means
BMI below 18.5: Underweight
BMI 18.5 to 24.9: Healthy weight
BMI 25 to 29.9: Overweight
BMI 30 and over: Obese
Using the BMI Chart
To figure your BMI, find your height and weight (or the numbers closest to them) on the chart below. Follow each column of numbers to where your height and weight meet on the chart. That is your BMI. You can also calculate your BMI using the formula below.
Using the BMI Formula | Example |
Multiply your weight in pounds by 703. | 160 pounds x 703= 112480 |
Divide the answer by your height in inches. | 112480 ÷ 63 inches= 1785 |
Divide this number by your height in inches again. This is your BMI. | 1785 ÷ 63 inches= BMI of 28 |