BMI Calculator

What is BMI?

The abbreviation BMI comes from the English abbreviation of the words “body mass index”, which refers to the body mass index.

A simple formula calculated the BMI by dividing body weight by the square of the height in meters. In addition, when determining the BMI, apart from body weight and height, gender and age are also considered.

Therefore, to calculate your body mass index, it is good to use the BMI calculator available for this purpose.

You should know that the BMI calculator for men will show a slightly different result than the one that will cause calculations when the same parameters are entered by a woman.

Why should you know your BMI?

Maintaining a healthy BMI is about keeping your body healthy. The BMI calculator will allow you to determine the risk of cardiovascular diseases, atherosclerosis and diabetes. Both too low and too high body weight have consequences for our health, so it’s worth knowing the results.

You should also realize that the BMI calculator and calculation results should be interpreted considering the lifestyle we lead. For example, bodybuilders have a high BMI, which does not make them obese. In case of athletes from other disciplines, the BMI calculator may show too low a value, which will also not mean a threat to their health.

There are also differences in terms of gender. It is natural for women to have more body fat than for men. So let’s keep common sense when using the BMI calculator for calculations. The ideal weight will not be the same for every person of the same height.

BMI calculator, exact score, and interpretation

For a person who leads a lifestyle without practicing competitive or professional sports, interpreting the results is not a challenge.

However, to interpret the calculated BMI that the calculator has calculated, it is good to use a table that includes BMI values ​​and their tolerances, and then classify the state of our body according to the result.

To help you interpret your result, use the table below to find out if your weight is within the standard developed by global health organizations.

BMI table – general
BMI score Weight interpretation
<16 Severe malnutrition
16.1 – 18.4 Moderate malnutrition
18.5 – 22 Underweight
22.1 – 24.9 Normal weight
25 – 29.9 Overweight
30 – 34.9 Type I obesity
35 – 39.9 Type II obesity,
> 40 Type III obesity

BMI Calculator – Women – Interpreting the Results

As we have already mentioned, fatty tissue naturally accumulates in certain areas of the body in women, because it is simply a feature of the female anatomy. Therefore, the BMI Calculator calculates the values ​​differently depending on the sex of the examined person.

That is why we recommend all ladies to familiarize themselves with the BMI table, which presents the norms for women. It should be noted, however, that the BMI calculator for pregnant women will not show the correct values. Pregnant women should not undergo BMI tests.

BMI score Weight interpretation
less than 20 Underweight
20 – 23.9 Normal weight
24 – 28.9 Type I obesity
29 – 37 Type II obesity
over 37 Type III obesity

BMI calculator – men

Since tables dedicated to women have been developed, it is easy to guess that similar tables have been developed for men.

So, if you just did the calculations, please refer to the table below to see what the BMI calculator showed you. The age you are at is not essential, but if you can enter it in the calculator – it will be more accurate.

BMI score Weight interpretation
less than 20 Underweight
20 – 24.9 Normal weight
25 – 29.9 Type I obesity
39 – 40 Type II obesity
over 40 Type III obesity

BMI calculator for kids

The BMI calculator used to calculate the correct adult body weight cannot be used to determine a child’s BMI without correct interpretation.

First, because children’s development is dynamic and uneven. Children have periods of rapid growth, stabilization, and rapid weight gain. To determine the correct body weight of children, the percentile method is used.

It comprises comparing the child’s height and body weight with statistics compiled by health organizations (eg WHO). Similarly, when using the BMI calculator for adolescents, the goat result should be interpreted using a percentile grid.

To facilitate the interpretation of the result of the BMI calculator for children up to 24 months of age, below, we present charts intended for this age group.

BMI for age Criteria for assessing BMI
<3c Significant body weight deficiency
<10-3c Body weight deficiency
<25-10c Thinness
25–75c Standard
<75–90c Tendency to be overweight
<90–97c Overweight
> 97c Obesity

When the BMI calculator shows you are overweight

When we do not have problems with getting food, more and more people are struggling with overweight or even obesity. It is a chronic disease of civilization. From a medical point of view, overweight and obesity are different, although both are because of the accumulation of excess body fat.

How much unwanted body fat defines the difference between these conditions is there. According to the accepted norms for a person over 15, when the BMI calculator for teenagers shows a value of 25, but not over 30, we are talking about overweight.

When the BMI calculator calculates a value above 30, we are talking about obesity. Similar norms apply to adults. The type of obesity is also classified and so when the BMI calculator calculates the value:

30 – 35 – we are talking about moderate obesity,
35 – 40 – shows significant obesity,
Over 40 is obesity posing a serious risk of disease.
Cardiovascular diseases such as hypertension, type 2 diabetes, dyslipidemia and metabolic syndrome are the most frequent and the most frequent in obesity.

Left ventricular hypertrophy in obese people contributes to coronary heart disease and circulatory failure.

Research shows that these ailments increase in direct proportion to the high index calculated by the BMI calculator.

High BMI can also cause cancer, and also affects the occurrence of various degenerations of the joints in the lower extremities. Our legs are overloaded and there is pain, swelling and restriction of joint mobility.

Obesity showed by the BMI calculator causes cholelithiasis, in which bile saturated with cholesterol has an excellent basis for the formation of deposits.

Among the diseases occurring with a high index of the BMI calculator, there are also obstructive sleep apnea, disorders of the reproductive system (in women amenorrhea) or even mental disorders. Obesity, in many people, lowers self-esteem and leads to depression.

When the BMI calculator shows you are underweight

Although we can find the most literature and advice on overweight and obesity, the condition when the BMI calculator shows a significant shortage of body weight is also not recommended and can also be dangerous to your health.

First, it can be a signal that the body is not absorbing nutrients. Their proper amount is necessary to maintain the work of the brain, heart and digestive functions. When your BMI calculator shows the result less than 20, and all physical activity is a source of fatigue for you, so your body may be exhausted.

This condition slows down the development of children and adolescents, disrupts their sexual maturation, hinders pregnancy, weakens the structure of the bones, which become brittle, and reduces resistance to diseases.

That is why it is so important to check your weight systematically and use the BMI calculator to monitor your risk of disease.

The easiest way is to go to the online BMI calculator on our website and, after entering the data about weight, height, etc., get fully reliable information.

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