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  BMI - Body Mass Index
If you are unable to use the BMI calculator, or if you are interested in how BMI is calculated, this page has the mathematical formulas. You can calculate BMI using either feet, inches, and pounds, or meters, centimeters, and kilograms.
English Formula

Body Mass Index can be calculated using pounds and inches with this equation

BMI = (             Weight in Pounds             
(Height in inches) x (Height in inches)		 ) x 703

For example, a person who weighs 220 pounds and is 6 feet 3 inches tall has a BMI of 27.5.

(             220 lbs.            
(75 inches) x (75 inches)		 ) x 703 = 27.5
Metric Formula

Body Mass Index can also be calculated using kilograms and meters (or centimeters).

BMI =             Weight in Kilograms             
(Height in Meters) x (Height in Meters)		  
  or  
BMI = (             Weight in Kilograms             
(Height in centimeters) x (Height in centimeters)		 ) x 10,000

For example, a person who weighs 99.79 Kilograms and is 1.905 Meters (190.50 centimeters) tall has a BMI of 27.5.

            99.79 Kg            
(1.905 m) x (1.905 m)		 = 27.5