Calculate your BMI

How to use the calculator

To calculate your BMI enter the suggested values in the fields below the result will be displayed below:

Weight (kg)
Height (m)

What is Body Mass Index?

BMI (Body Mass Index) is a measure of how obese a person is based on the ratio of their weight to their height. It is widely used as a screening tool to identify potential health issues related to obesity or being underweight.

How to calculate BMI

To calculate BMI, divide a person's weight in kilograms by their height squared in meters. The formula is as follows:

BMI = weight (kg) / height² (m²)

For example, if a person weighs 70 kg and is 1.75 m tall, their BMI calculation would be:

BMI = 70 / (1.75 x 1.75) = 22.9

After obtaining the result, a reference table can be consulted, such as the table provided by the WHO (World Health Organization), which is the weight category corresponding to the calculated BMI.

The reference table divides BMI into categories from underweight to obese class III based on the range of BMI values.

Note the following table:

BMI category Classification
Below 18.5 Underweight
18.5 - 24.9 Normal weight
25.0 - 29.9 Overweight
30.0 - 34.9 Grade I obesity
35.0 - 39.9 Grade II obesity
40 or more Grade III obesity

Reinforce your knowledge with the video below