How to Calculate Your Own BMI

chart showing BMI calculations

by | Mar 18, 2015 | Diet, Resource Center

The BMI (Body Mass Index) is a calculation that estimates your weight category based upon your age, weight, and height.

 

To calculate your own BMI:

  1. Figure out your current weight. (Example 150 pounds)
  2. Multiply your weight by 704. (150 lbs x 704 = 105,600)
  3. Measure your height in inches. (Example 70 inches)
  4. Multiple your height by itself. (70 x 70 = 4,900)
  5. Divide the “weight answer” by the “height answer”.
    (105,600 / 4,900 = 21.55)
  6. In this example your BMI = 21.55.

 

BMI Categories

Under 20 = Underweight

20-25 = Healthy

25-30 = Overweight

30-35 = Obese

Over 35 = Seriously Obese

  • BMI may over estimate body fat in athletes and others who have a muscular build.
  • BMI may under estimate body fat in older persons and others who have lost muscle mass.

 

Overweight and obese individuals are at increased risk for many diseases and health conditions, including the following:

  • Hypertension
  • Dyslipidemia (for example, high LDL cholesterol, low HDL cholesterol, or high levels of triglycerides)
  • Type 2 diabetes
  • Coronary heart disease
  • Stroke
  • Gallbladder disease
  • Osteoarthritis
  • Sleep apnea and respiratory problems
  • Some cancers (endometrial, breast, and colon)