Body Mass Index (BMI) Calculator.

What is BMI ? 

Body mass index, sometimes called the Quetelet index, it is a value taken from a person’s height and weight. BMI can be easily calculated, BMI index score results are shown by taking into account a person’s height and weight. Depending on the score that falls within the BMI category, it helps determine whether a person is obese, overweight, normal weight or underweight.

Calculate BMI?

BMI formula is easy to calculate. This is a simple calculation that takes your weight and height. Body mass index is calculated in 2 ways:

    1.Imperial BMI Formula: Calculate your height in inches and weight in LBS.

how to convert Weight into LBS: 1 kg = 2.2 pound or lbs , suppose your weight is 55 to convert in LBS

, 55 *2.2 = 121 lbs.

Imperial BMI Formula = Weight (LBS) x 703 ÷ Height (inches²)

   2. Metric BMI Formula: Calculate your height in meters and weight in kilograms.

Metric BMI Formula = Weight (KG) ÷ Height (m²)

Body Mass Index Score.

BMI result is very helpful .Because you know at what level your body weight is, whether it is in good condition or not and you understand the health of your body.

BMI score is shown in the table below, you can compare your result easily.


Body Mass Index Score


less than 18.5
Normal Weight

18.5 – 24.9


25 – 29.9

Obesity (Class 1)

30 – 34.9

Obesity (Class 2)

35 – 39.9

Extreme Obesity (Class 3)