The Body Mass Index (BMI) is an index calculated from an individual’s weight and height, designed to serve as a guide for human body fat (i.e., an individual’s “fatness” or “thinness”). Generally, an adult person with a BMI of 18.5 –24.9 is regarded as having a normal or healthy weight for his or her height. A BMI lower than 17.5 is an indicator for anorexia nervosa, while a BMI higher than 30 is an indicator for obesity.
In order to calculate the BMI, simply type the values of your weight and height in either imperial (pounds and feet) or metric (kilograms and centimeters) units into the boxes provided in the BMI calculator above and then click on the “calculate” button.
The BMI is calculated by dividing the individual’s body weight to the square of his or her height.
|SI (metric) units||Imperial or US customary units|
BMI = mass (kg) x 1002 / (height (cm))2
BMI = mass (lb) x 4.88 / (height (ft))2
Understanding the BMI:
|BMI below 16.0||Severely underweight|
|BMI = 16.0 to 18.5||Underweight|
|BMI = 18.5 to 24.9||Normal weight|
|BMI = 25 to 29.9||Overweight|
|BMI of 30 or greater||Obesity|