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Body Mass Index (BMI)

Measurement of body fat based on height and weight.
Applicable for people, age 18 or older.



World Health Organization's (WHO) recommended body weight based on BMI values for adults.

Category BMI
Severe Thinness < 16
Moderate Thinness 16 - 17
Mild Thinness 17 - 18.5
Normal 18.5 - 25
Overweight 25 - 30
Obese Class I 30 - 35
Obese Class II 35 - 40
Obese Class III > 40

Additional Information

The results should be used only as a guide and should not replace medical advice.

Muscle structure and ethnic origin should be considered when interpreting the results.

Example 1: BMI may overestimate body fat for people who are very muscular and physically fit.
Example 2: People of Asian descent may have an increased risk of health problems at a lower BMI threshold than the general population.

Body Mass Index, or BMI, is a person’s weight in kilograms divided by the square of his/her height in meters. The National Institute of Health (NIH) has now defined BMI to be the deciding parameter to know if you are underweight, normal weight, overweight or obese. BMI is calculated by dividing a person’s weight in kilograms by the square of his/her height in meters. For example, if your weight is 60 kilograms and your height is 5 feet 3 inches, your BMI will be calculated as follows:
60 / 2.61 (1.6 * 1.6) = 22.9.

(Here we converted 5 feet and 3 inches into meters which is equal to 1.6)

BMI reading of 22.9 means underweight which makes you more prone to diseases because it signifies that your body’s immunity is weak. You can even get osteoporosis in later stages of life or be anaemic. If you are overweight, obese or severely obese, your chances of developing various diseases increase with the increase in your BMI number. You get more prone to diseases such as high blood pressure, type 2 diabetes, high cholesterol, coronary artery disease, stroke, among many others.