Health Conditions

Another way to measure BMI is by using the following mathematical calculation:

Step 1: Multiply your weight in pounds by 703

Example: 703 x 200 lb = 140,600

Step 2: Multiply your height in inches by your height in inches

Example: 63 in x 63 in = 3,969

Step 3: Divide the answer in Step 1 by the answer in Step 2 to get your BMI

Example: 140,600 / 3,969 = 35.4

BMI = 35.4

Like the weight-for-height tables, BMI measurement is not without limitations. BMI does not provide information on a person's percentage of body fat or the difference between excess fat and muscle (which also increases body weight). Although BMI is closely associated with measures of body fat for most adults between the ages of 19 and 70 years it may not be the most accurate measurement for bodybuilders or pregnant women. These are individuals who may be overweight, but may not be obese. If you have any questions or are unsure of how to calculate your BMI, be sure to speak with your doctor at your next appointment.

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Note: The above information is intended to supplement, not substitute for, the expertise and judgment of your physician, pharmacist, or other healthcare professional. It is not intended to diagnose a health condition, but it can be used as a guide to help you decide if you should seek professional treatment or to help you learn more about your condition once it has been diagnosed.