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**How to calculate the ideal weight***: tools for online calculation, the formula for the ideal weight based on height and advice on how to calculate the ideal weight of a boy or girl.*

The **Ideal weight** o "desirable weight" is the weight which corresponds to a more optimal life expectancy. In practice, for **calculate the ideal weight**, we can use various formulas or tables. Some start from the Body Mass Index while others refer to your gender and height.

## Table to calculate the ideal weight in adults

It is important to keep in mind that the thickness of your bone (often defined as *bone build*) could affect the result of the**calculation of your ideal weight**. Our advice is to start by consulting the following table to get a first indication of the relationship between your weight and your height and gender. To have the real weight (without the risk of underestimating or overestimating this data), it is essential to use all the appropriate information: bone structure, age, height ... For more detailed information, however, we recommend that you contact your trusted nutritionist.

## Calculation of the ideal weight based on height

Print the following table and if in drawing the line that starts from height to reach weight, you enter the green field, you are in the range of your ideal weight and at most you can focus on losing weight in terms of fat compensating it with muscle mass from create through exercise.

It will be appropriate to act as soon as possible with the aim of losing weight through a diet combined with moderate but constant exercise only if your line runs through the purple, red or even blue area.

The center line, indicated with **IMC**, represents the**Body Mass Index**, a reference parameter obtained through static studies on samples, therefore based on standard average parameters without taking into consideration the individuality of the subject, as only a good **nutritionist doctor**.

The **calculation of the ideal weight** it is just one of the many factors to consider on the path to good physical shape.

Other important indicators include the percentage of fat or rather the percentage of fat mass on the total mass which also includes bones and muscle mass.

It is important to consider that body fat in most cases tends to accumulate in specific areas in relation to sex and your morphology. All factors that make an evaluation by a specialist doctor essential.

Your weight may also be subject to fluctuations due to particular moments of our sight such as the onset of menopause for women or stressful situations at work or very delicate moments such as serious grief or sentimental disappointment.

The bmi value must therefore always be considered as one of the many indicative factors of your state of form but only a nutritionist or dietician will be able to correctly diagnose your physical state by collecting many other information and data on your history and situation.

Therefore, often speaking of "normal weight" can make little sense as the ideal weight varies for each of us based on our specific physiological characteristics.

Achieving a good BMI should be just one of the many goals on our path to wellness.

## How to calculate the ideal weight, the mathematical formula

For **calculate the ideal weight based on height**you can apply this mathematical formula:

**Ideal weight** = Desirable BMI (22) x height (meters squared); practical example.

My height is 1.73 m. I will therefore do:

22 x (1.71 x 1.71) = 64 kg.

This formula is very indicative, it does not take age into account (it cannot be applied for **calculate the ideal weight of children**) nor of the skeleton. It does not consider subjective parameters because it is the result of mere statistical studies. If you are interested **to calculate** **the body mass index**, continue reading this article.

## How to calculate the Body Mass Index. BMI calculation

L'**Body Mass Index** it is not reliable on people of less than 150 cm or more than 180 cm stature. It cannot be calculated in people of developmental age (less than 18 years) or on the elderly, so even in this case children are excluded. It is calculated with this formula:

**IMC** = Weight (kg) / height.

The height is expressed in meters and raised to the square. Practical example, I am 60 kg by 1.71. BMI = 60 kg / (1.71 × 1.71) = 20.54. The recommended BMI fluctuates between a minimum of 19 and a maximum of 24.9. It is in this range that our ideal weight will fall but according to standardizations, the BMI is equal to 22. In fact, if a **online program** for the calculation of your ideal weight, most likely, it will use this data without taking into account your bone structure.

**Ideal weight** = Desirable BMI (22) x height (meters squared);

When we talk about bone we refer to the so-called "**morphological type**“, It is calculated as“ height (cm) / wrist circumference (cm) ”, but even in this case there are standardizations and we will not need to make further calculations. To understand your morphological type you need a tape measure or a flexible tape measure similar to the one you find on purchases from Ikea or Leroy Marlin.

There **wrist circumference** it is an indicator of growth and body size as this region of the body is free of fat and muscle. Once you have measured your pulse, keep in mind that:

-Longiline or Slim Build: Man <16 cm. Woman <14 cm

-Normoline or Average build: Male 16-20 cm. Woman 14 - 18 cm

Short-lived or heavy build: Man> 20 cm. Woman> 18 cm

The closer your build approaches the short model, the closer your desirable BMI will have to approach the maximum limit of 24.9.

Likewise, the closer your build will be to a slender model, the more yours **IMC** desirable will have to approach the minimum limit of 19.

Therefore, as seen, the standard value of 22 that is used in the various online applications is merely for reference.

To correctly determine yours **weight**, no application can replace the opinion of a good nutritionist, above all because, as you have noticed, the parameters to be observed are not only those of "weight" and "height" because there are many other factors at stake.

In any case, if you want to calculate your BMI (or BMI - Body Mass Index) in a few seconds you can use our online BMI tool.

However, remember to consider that to achieve and maintain a healthy weight you will need to monitor**calorie intake** according to yours **caloric needs** which varies in relation to your lifestyle, the type of work you do, your age and your sex.

If you carry out intense physical activity on a regular basis, your body will need one **diet with a higher calorie intake**. Physical activity, in fact, involves a greater calorie expenditure. In addition, for the same body weight, those with more developed muscle mass will burn more calories than those with more fat mass.

If you lead one **sedentary lifestyle** and do not engage in physical activity you will have to avoid diets too rich in calories as you would risk accumulating fat quickly and moving away from your **ideal weight**. Lean mass is defined*metabolically active mass*because for its maintenance it needs more nutrients (for this reason it burns more calories).

## How to calculate fat mass

The fat mass represents the totality of lipids present in our body. For **calculate fat mass**it is possible to use tailor-made methodologies such as plicometry, bioimpedance analysis and the technique that measures body circumferences one by one. According to the formula developed by Wilmore and Behnke, fat mass can be calculated simply by measuring the waistline and neck circumference. Different constants are used and the formula differs between men and women.

Fat mass percentage calculation in men (%):

495 / {1.0324 - 0.19077 [log (waist-neck)] + 0.15456 [log (stature)] - 450

Calculate percentage of fat mass in women (%):

495 / {1.29579 - 0.35004 [log (waist + hips-neck)] + 0.22100 [log (stature)]} - 450

Also in this case we can use the online calculation using our tool for calculating fat mass.

As already mentioned for the body mass index and the ideal weight, no online tool, nor the standardized mathematical formulas can replace an accurate analysis performed by a professional in the sector.

## Calculation of the ideal weight in children

When it comes to children, a consultation with a nutritionist is a must. The calculation of the infant body mass index, as well as of the ideal weight, varies from year to year. Children are at an age of full growth and the use of tools is not recommended.

Descriptively, we provide you with the tables for calculating the ideal weight in children.

To consult the tables you will need your child's body mass index. The body mass index can be obtained as explained in the previous paragraph dedicated to **BMI calculation**.

## In pink: table to calculate the ideal weight of a child

Using the tables shown here is easier than you might imagine. The procedure is similar to what we saw for adults but in this case we do not use weight and height, but age and body mass index.

On the side of the two columns you can read BMI,*Body Mass Index*, body mass index.

Along the horizontal line at the bottom, reference is made to age. The data shown are the same for both the calculation table intended for children and the calculation table for girls. Look at the tables.

## Table for calculating the ideal weight of a child

Print the table to facilitate the calculation. With a ruler, draw a horizontal line at the**Body Mass Index (BMI)** of your little boy or girl.

Again with a ruler, draw a vertical line corresponding to the age of your daughter or son.

The point of intersection will tell you, in a very orientative way, if your child is eating properly or if he is accumulating too much fat. In reality, the graph only tells you if your child's weight is greater or less than the standards of the population examined to make the table. In any case, the statistical data states that:

- If the point of intersection is below the 5th percentile, the graph indicates
**underweight**. - If the intersection point goes from the 5th to the 85th percentile, we speak of
**normal weight**. - If the intersection point of the two lines goes from the 85th to the 95th percentile, reference is made to the
**risk of being overweight**. - From the 95th percentile onwards we speak of
**overweight**or childhood obesity.

You might be interested in the related article on **impedance balance**