The quest for practical, measurable, and relative body weight index was something that began shortly after World War II due to a rise in mortality rates of overweight insurance policy holders. The link between a person’s weight and cardiovascular health became a front and center discussion. And thanks to the work of Adolphe Quetelet, a Belgian astronomer, mathematician, statistician, and sociologist, the Quetelet Index was born in 1832.

Later in 1972, an American scientist, by the name of Ancel Benjamin Keys confirmed the validity of the Quetelet Index in an epidemiological study, and though Ancel Keys credited Adolphe Quetelet for his work, nonetheless he renamed it Body Mass Index (BMI).

The body mass Index (BMI) is a metric used to estimate the amount of body fat a person has. The two measurements factors needed for BMI calculation are height and weight. To calculate your BMI, divide your weight by your height squared, and then multiply by the conversion factor of 703.
For example, a person who weighs 195 pounds and stands tall at 6 foot, 4 inches has a BMI of 23.7.

BMI=   703   X     195 (lb)      =0.03376039   X   703    =23.7
5,776 (76 X 76)