BMI Calculator

To find SI, US, & UK units enter weight, height, and press the calculate button using BMI calculator 

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English BMI Formula
BMI = (Weight in Pounds / (Height in inches * Height in inches)) *703


Metric BMI Formula
BMI = (Weight in Kilograms / (Height in Meters* Height in Meters ))

BMI is an easy and quick way to calculate the corresponding measure of body fat, based on your height and weight.BMI is an indicator that helps u to decide if whether you are underweight, overweight, obese or normal. You can calculate your BMI by using BMI Calculator or by applying BMI Formula.

BMI Classification
18.5 or less           Underweight
18.5-24.99            Normal Weight
25-29.99               Overweight
30-34.99               Obesity (Class 1)
35-39.99               Obesity (Class 2)
40 or greater        Morbid Obesity

Underweight: It is a stage where BMI is equal to or less than 18.5. The lean BMI indicated that your weight may be too low. At this stage you are asked to consult your physician. Underweight describes if you should gain weight, as low body mass can decrease your body’s immune system.  The decrease in immune system leads to illness such as disappearance of periods (women), bone loss, malnutrition and other health conditions.

Normal Weight: People gaining BMI between 18.5 to 24.9 are said to have an ideal amount of body weight.  Those gaining the Normal Weight achieve the lowest incidence of serious illness, as well as perceive more physical attraction than people with BMI in higher or lower ranges.

Over Weight: Those ranging between the BMI 25-29.9 are considered overweight. They are advised with healthy tips to lower their weight such as diet and exercise. Higher the BMI, higher are risk of health problems. As per the recent health survey, an increased rate of blood pressure, diabetes and heart disease are recorded at 27.9 for women and 27.8 for men.

Obesity (Class 1): People with a BMI of 30-34.99 come in the category of Obesity (class 1). These people are in a physically unhealthy condition. Those coming under this category are prone to serious illness such as heart disease, diabetes, high blood pressure, gall bladder disease, and also some cancers. In this case people are advised to reduce their weight by 5-10 percent that results in considerable health improvements.

Obesity (Class 2):  BMI showing the result between 35-39.99 indicates a high risk of weight-related health problems and even death is severe. Consult doctor and reduce weight to a lower BMI.

Morbid Obesity:  The BMI ranging to 40+ have an extremely high risk of weight-related disease and premature death. A health specialist is recommended to get in touch with the health conditions. 

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