BMI (and ideal weight) calculator

The body mass index (BMI) classification can help identify obesity or malnutrition problems in children, adolescents, adults and the elderly.

In addition to calculating the BMI value, this calculator also indicates the ideal weight range you should have to ensure a better quality of life. Having a weight within the ideal weight range also helps prevent the onset of several chronic diseases, such as diabetes and hypertension.

Enter your data into the calculator and calculate your BMI:

The result of this calculator also tells you the ideal weight range for your height.

How BMI is calculated

BMI is calculated by dividing weight (in kg) by height squared (in m), according to the following formula: BMI = weight / (height x height).

The BMI result is given in kg/m².

How to interpret the BMI result

After obtaining the BMI result, you must interpret the value using the following table:

According to the BMI result, it is also possible to predict each person’s risk of developing chronic diseases. This is because the higher the BMI value, the greater the amount of fat accumulated in the body and the greater the risk of diseases such as high blood pressure, diabetes and heart problems.

Whenever possible, the BMI result should be interpreted by a nutritionist, who will adapt the diet according to each person’s goals and health history.

What does BMI mean?

BMI is the acronym for Body Mass Index, a parameter that is used to assess whether weight is within the ideal value for height.

This means that, based on the BMI result, it is possible to know whether the person is above or below the recommended weight and also diagnose health problems such as obesity or malnutrition.

BMI can be used in children, adolescents, adults or the elderly.

Why is it important to know your BMI?

Knowing the BMI is important to check if the weight is in accordance with the person’s height, as well as being important to know if there is a risk of developing any disease. In the case of children, BMI is important to know if their development is as expected.

Furthermore, knowing the BMI, it is also possible to check the ideal weight and, thus, know if the person is above or below the recommended weight for their height. See how the ideal weight is calculated.

Is BMI the best way to assess weight?

Although BMI is considered essential for knowing a person’s nutritional status, it is a tool that does not take into account many other factors that are important for assessing a person’s weight.

So, although it is a good quick tool to understand whether or not your weight is adequate, it is not the best way to assess your weight. To do this, the ideal is to consult a doctor or nutritionist to evaluate other factors such as age, level of physical activity, body composition, hydration level and health history, for example.

See which exam allows you to analyze your body composition.

What to do to improve BMI?

To improve your BMI, it is important to check whether you are above or below the weight considered normal. When your BMI is in the thin range, it is important to consult a nutritionist who will carry out a complete assessment, recommending a personalized eating plan that prioritizes weight gain in a healthy way.

On the other hand, when the BMI is in the overweight or obese range, the nutritionist may recommend a reduced calorie diet. In addition to diet, regular physical activity is also recommended, which will help speed up metabolism and facilitate weight loss, which directly influences BMI.