The Body Mass Index, commonly referred to as the BMI, is an indicator of a person's body fatness, and is often used to determine whether or not a person is underweight or overweight, in relation to the general population. BMI is calculated via a fairly simple formula: weight (lb.) / [height (in.)]squared x 703, thought there are a number of websites available online that can do these calculations for you.
- Skill level:
Other People Are Reading
Things you need
- Your height
- Your weight
- Internet access
Open your Internet browser.
Visit the Center for Disease Control's main website (see Resources).
Perform a search for "adult bmi calculator" using the search bar at the top right of the CDC website's home page.
Click the top link, which should read "Healthy Weight: Assessing Your Weight: BMI: Adult BMI..."
Enter your height (in feet and inches) and weight (in pounds) into the "Height" and "Weight" fields.
Tips and warnings
- Use a scale to calculate your weight before calculating your BMI if you have not weighed yourself recently. This will improve the accuracy of your results.
- Having a BMI declared to be "normal" does not mean you are not at risk for all diseases and medical conditions.
- Though males and females do not have separate BMI charts, Dr. Stephen Halls says that results should be interpreted differently, as female bodies tend to carry more fat than male bodies naturally.
- BMI will not be 100-percent accurate, as it does not calculate the difference between the weight of fat and the weight of muscle.
- BMI is calculated the same way for children as it is for adults, but there are different scales used for interpreting these results because the amount of body fat changes with age, and the amount of body fat differs between the two sexes.
- 20 of the funniest online reviews ever
- 14 Biggest lies people tell in online dating sites
- Hilarious things Google thinks you're trying to search for