BMI Calculator

The Body mass index was invented by Belgian polymath Adolph Quetelet. It is used to measure whether one is underweight, overweight or in normal category. It is widely used by physicians and dieters to judge body composition. Proper consultation and diagnosis by a qualified and certified doctor is necessary about body fat levels. BMI calculator should not be meant to replace the physicians’ advice.

Free BMI calculator can be installed for calculating body fats. It gives reliable measurement of the body fats. It can be used both for male and female. For calculating BMI, enter your weight and height into the required fields and press ‘calculate’. In this way, you get number indicating your BMI.

You can find your category according to your BMI measurement by using the following body mass index chart.

A body mass index measurement of
30 means obesity
25-29.9 means overweight
18.5-24.9 means underweight
17.5 Or below means anorexic BMI



For measurement of children’s BMI, it is not used in the same way as it is used to measure body mass index in adults. Body mass index in children is measured by comparing the results with children of the same age to get more or less proper estimation.

Body mass index calculator is basically designed for people of 20 or more than 20 years of age. The body is still growing in teens and children. For teens and children, separate BMI calculators have been designed. Child and teen calculator provides BMI and the corresponding BMI for age percentile on a CDC BMI for growth chart. This calculator is used for children and teens, aged 2 to 19 years old. For 20 years old and older, adult BMI calculator is used.

There is a drawback of BMI calculator. BMI calculator cannot differentiate between fat and muscle mass i.e. a heavy body builder having no body fat is categorized in obese people. But, such cases are exceptional. Therefore, BMI of muscular large frame is not a reliable measurement of existing body fat. It overestimates body fat levels in overly muscular people like body builders or people having naturally muscular large frame work.

Advanced body mass index calculator is a great BMI calculator with advanced features for body mass index. It has BMI charts for making percentile comparisons.

BMI calculator helps in determining whether you are a suitable candidate for weight loss surgery or not. Every overweight person can not undergo weight loss surgery or cannot be fit for it. A suitable candidate for weight loss surgery is one who is clinically obese or morbidly obese. Such a person must be at least 100 pounds or more overweight. At this stage of obesity, body and skeleton functions are severely affected. Physicians and surgeons have to consider many other medical reasons before declaring anyone a candidate for weight loss surgery. An overall assessment of the body fats has to be made in this regard.