How to calculate normal weight. How to calculate normal weight for each age? Calculating BMI: why you need to do it

The results of BMI calculations are not suitable for assessing the weight of professional athletes, pregnant women, as well as people suffering from edema and other disorders that lead to an incorrect assessment of the original data.

Weight ranges in this calculator are calculated taking into account height, according to the methodology of the World Health Organization (WHO).

The very method of estimating weight by BMI is intended for the primary detection of underweight or excess weight. Obtaining an estimate different from the norm is the reason for contacting a nutritionist and endocrinologist in order to conduct an individual weight assessment and make recommendations for its correction, if necessary.

The range of ideal weight (norm) shows at what weight the probability of occurrence and recurrence of diseases associated with overweight or underweight is minimal. In addition, as practice shows, a person with normal weight looks not only healthy, but also the most attractive. If you adjust your weight, it is highly recommended not to go beyond the norm, in order to avoid health problems.

About weight categories

underweight usually an indication for increased nutrition; consultation with a dietitian or endocrinologist is also recommended. This category includes people who are malnourished or have a disease that leads to weight loss.
Underweight is also typical of professional models, gymnasts, ballerinas or girls who are overly fond of weight loss without the control of a nutritionist. Unfortunately, this can sometimes lead to health problems. Therefore, weight correction in this range should be accompanied by regular medical supervision.

Norm shows the weight at which a person has the maximum chance of staying healthy as long as possible, and, as a result, beautiful. Normal weight is not a guarantee of good health, but it significantly reduces the risk of disorders and diseases caused by overweight or underweight. In addition, the owners of normal weight, as a rule, are in good health even after intense physical exertion.

Preobesity speaks of being overweight. A person in this category often has some signs associated with excess weight (shortness of breath, increased blood pressure, fatigue, fat folds, dissatisfaction with the figure) and has every chance of moving into the category of obesity. In this case, a slight weight correction to the norm, or to values ​​close to it, is recommended. It also does not hurt to consult a nutritionist.

Obesity- an indicator of chronic disease associated with excess body weight. Obesity invariably leads to problems with the cardiovascular system and significantly increases the risk of acquiring other diseases (diabetes, hypertension, etc.). Obesity is treated exclusively under the supervision of a nutritionist or endocrinologist, and only after the necessary tests have been carried out and its type has been determined. It is not recommended to engage in uncontrolled diets and serious physical exertion for obesity, as this can provoke additional problems.

Answers on questions

What is the ideal weight for me?

The calculator calculates a weight range that is ideal for you based on your height. From this range, you are free to choose any specific weight, depending on your preferences, beliefs and requirements for the figure. For example, adherents of a model figure tend to keep their weight on the lower border.

If your priority is health and life expectancy, then the ideal weight is calculated based on medical statistics. In this case, the optimal weight is calculated based on a BMI of 23.

Can you trust the resulting estimate?

Yes. Adult weight estimates are based on the results of authoritative research by the World Health Organization (WHO). Weight assessment from birth to 18 years of age is carried out according to a separate special method, also developed by WHO.

Why is gender not taken into account?

The BMI of adults is assessed in the same way for both men and women - this is justified by the results of statistical studies. At the same time, for weight assessment, gender and age are of fundamental importance.

Some other weight calculator gives a different result. What to believe?

There are a huge number of calculators designed to give an estimate of weight based on height and gender. But their formulas, as a rule, were developed in the last century by individuals or groups based on criteria that are unknown to you or do not suit you (for example, formulas for evaluating athletes).

The WHO recommendations used in this calculator are developed for ordinary modern people, taking into account the conditions of modern life, advances in medicine and based on recent observations of the population of all continents of the planet. Therefore, we trust only this technique.

I think the result should be different.

Evaluation is based solely on the height and weight you provide (and age and gender for children). In case of unexpected results, please double-check all entered data. Also, make sure that you do not belong to any of those whose weight cannot be assessed through the body mass index.

My result is underweight, but I want to lose more weight

There is nothing unusual in this, many professional models, dancers, ballerinas do just that. However, in this case, it is recommended to lose weight only under the supervision of a nutritionist and endocrinologist, so as not to harm your health. if it means something to you.

My result is normal, but I consider myself fat (or thin)

If you have concerns about your figure, then we recommend that you go in for fitness, having previously consulted a good nutritionist.

Please note that some elements of the figure are almost impossible to correct only with the help of fitness, exercise, diet, or a combination of both. Your goals should be analyzed by an experienced doctor in order to assess their reality, consequences and prescribe only the right procedures.

My result is pre-obesity (or obesity), but I do not agree with this

If you are an athlete with increased muscle mass, then BMI weight assessment is simply not intended for you (this is mentioned in). In any case, for an accurate individual weight assessment, contact a nutritionist - only in this case you will receive an authoritative result with a doctor's seal.

Why am I considered too thin or fat even though my weight is normal?

Pay attention to the personality and weight of those people who bother you. As a rule, they judge exclusively by themselves: subjectively. Fat people always consider thin people to be skinny, and thin people consider fat people to be fat, moreover, both of them can have a healthy weight. Take into account social factors: try to exclude or stop those judgments in your address that are based on ignorance, envy or personal hostility. Only an objective assessment of BMI is worthy of trust, which clearly indicates the norm, excess or deficiency of mass; and trust your anxieties about the figure only to supportive people of your weight category or a doctor.

How to calculate body mass index (BMI)?

It is necessary to divide the weight indicated in kilograms by the square of the height indicated in meters. For example, with a height of 178 cm and a weight of 69 kg, the calculation will be as follows:
BMI = 69 / (1.78 * 1.78) = 21.78

Calculate your ideal weight Almost everyone has tried at least once. There are many formulas that can be used to determine if your body weight is normal. The simplest method for calculating normal body weight is: "height minus 100" for men and "height minus 110" for women.

However, this approach does not give a true idea of ​​whether this particular person is overweight.

It is clear that asthenic people will weigh less than normosthenics, and normosthenics will weigh less than broad-boned people. In addition, an excess of muscle mass in an athlete can be interpreted as obesity, or vice versa, the body weight of an asthenic teenage girl can be considered insufficient.

Ideal weight

Currently ideal weight(normal body weight) is determined using a number of indicators that take into account the characteristic features of the structure of the individual. This approach allows you to more accurately determine whether you are overweight, which, by the way, from a medical point of view, may not be obese at all.

Degrees of obesity

Although we have become accustomed, following the fashion, to hang the tag "obesity" on anyone who does not look like anorexic catwalk beauties, there are a number of medical indicators for diagnosing this serious disease that are very different from our aesthetic ideas about beauty.

Endocrinologists distinguish 4 degrees of obesity. With 1 degree of obesity, excess body weight exceeds ideal or normal - 10-29%, with 2 degrees of obesity - by 30-49%, with 3 degrees of obesity - by 50-99%, with 4 degrees of obesity - 100% more.

To determine what degree of obesity a particular person suffers, it remains to find out what is normal, or ideal body weight.

What should be the ideal weight (ideal body weight)

The most scientifically substantiated, justified in practice and easy to measure is such an indicator as body mass index (BMI). Body mass index allows you to determine the degree of excess or insufficiency of body weight.

Determination of body mass index (BMI)

From a medical point of view, body weight is considered normal in a fairly wide range, which depends on body structure, age, gender, race, etc. The ideal body weight will be, respectively, the body weight, taking into account all these indicators.

Body mass index can be calculated using the formula:

Body weight in kilograms should be divided by height in meters squared, i.e.:

BMI \u003d weight (kg) : (height (m)) 2

For example, a person's weight \u003d 85 kg, height \u003d 164 cm. Therefore, BMI in this case is: BMI \u003d 85: (1.64X1.64) \u003d 31.6.

The body mass index was proposed as a determinant of normal body weight by the Belgian sociologist and statistician Adolf Ketele ( Adolphe Quetelet) back in 1869.

Body mass index is used to determine the degree of obesity and the risk of developing cardiovascular disease, diabetes and other complications associated with overweight and obesity.

Body mass types	BMI (kg / m 2)	Risk of comorbidities
underweight	<18,5	Low (increased risk of other diseases)
normal body weight	18,5-24,9	Ordinary
Overweight	25,0-29,9	elevated
Obesity I degree	30,0-34,9	High
Obesity II degree	35,0-39,9	Very tall
Obesity III degree	40	Extremely high

The table below shows the parameters at which body weight remains within the normal range from a medical point of view.

normal weight(marked in green in the table):

Yellow indicates overweight, red indicates obesity.

In addition, a number of other indices can be used to determine normal body weight:

1. Broca's index is used with a height of 155-170 cm. The normal body weight in this case is (height [cm] - 100) - 10 (15%).
2. Breitman index. Normal body weight is calculated by the formula - height [cm] 0.7 - 50 kg.
3. Bornhardt index. Ideal body weight is calculated by the formula - height [cm] chest circumference [cm] / 240.
4. Davenport index. The mass of a person [g] is divided by the height [cm] squared. Exceeding the indicator above 3.0 indicates the presence of obesity. (obviously this is the same BMI, only divided by 10)
5. Oder index. Normal body weight is equal to the distance from the crown to the symphysis (pubic articulation of the pubic bones) [cm] 2 - 100.
6. Noorden index. Normal weight is height [cm] 420/1000.
7. Taton index. Normal body weight = height-(100+(height-100)/20)

In clinical practice, the Broca index is most commonly used to assess body weight.

In addition to height and weight indicators, the method for determining the thickness of the skin fold proposed by Korovin can be used. According to this technique, the thickness of the skin fold in the epigastric region is determined (normally -1.1-1.5 cm). An increase in the thickness of the fold to 2 cm indicates the presence of obesity.

abdominal obesity

Another measurement option that is proposed to determine the degree of obesity along with the calculation of the body mass index is the measurement of waist circumference, since it is believed that the deposition of fat in the visceral-abdominal type (on the internal organs) is the most dangerous for health. The normal waist size for women is not more than 88 cm and for men - no more than 106 cm.

Although here the indicators are, of course, more subjective, because the waist circumference largely depends on the height and build of the person. So, women with a pear-shaped figure may have obesity on the hips and in the lower part of the body, but the waist remains thin, at the same time, women with an apple-shaped figure (thin legs, but an excess waist) will recognized as suffering from abdominal obesity.

body volume index

One of the relatively new methods for determining overweight is based on the use of three-dimensional scanning, which calculates body volume index(Engl. Body Volume Index, BVI). This method of measuring obesity was proposed in 2000 as an alternative body mass index, which does not provide accurate information about the risks of obesity for each individual patient. At the moment, the method has passed clinical trials in the USA and Europe as part of a two-year project. Body Benchmark Study.

Before you start “sculpting” the ideal figure, you should find out the norm of body weight and several formulas that describe how to correctly calculate your weight. Most of them take into account age, gender and height. These criteria are individual for each person, although with the same indicators, people may look different. It all depends on the volume of the figure, in which there is more fat or muscle. There is more than one way to calculate the weight rate. The information below will help you to study them and choose the right one for you.

Norm of weight for women

To determine the normal weight for a woman, it is important to note that it will be different for a particular body type. Three stand out:

1. Hypersthenic. A man of medium or even slightly shorter height, with a broad chest, short arms and legs, broad-boned.
2. Normosthenic. A person with average lengths of arms and legs, width of the chest.
3. Asthenic. A tall man, has long legs, has a narrow chest, slender, as if "stretched" upwards.

Each body type will have its own optimal weight. An exact number cannot be given. One can only describe the criteria by which the norm is determined:

• potential risks of developing diseases do not appear;
• there is no moment of comparing yourself with other people in relation to the figure;
• there are no obstacles to the usual rhythm of life, opportunities are not limited, especially movement.

Even such criteria may not be enough to determine the norm. In this case, it is worth using a special table, which defines the relationship between body weight (hereinafter referred to as “MT”) and height (hereinafter referred to as “P”):

Optimal weight for a man

The same body types are typical for men. You can determine it with a very simple test - you need to measure the circumference of the wrist of the working hand. In hypersthenics, it is 18.5 centimeters or more. In normosthenics, this value varies from 16 to 18.5. In asthenics, the wrist circumference is always less than 16 cm. The ideal weight for men is reflected in the form of a scale, which is represented by a table. The dependencies here are the same as in the case for women.

How to calculate your ideal weight

The body weight formula can be different. In one option, how much a person has grown is taken into account, in another - age, and in the third - volumes. As a result, approximately the same result is obtained. Although most of the instructions describing how to correctly calculate your weight allow you to quickly determine the range in which the mass of a healthy person is located. They also determine the interval when problems already appear. The result, in any case, is the number of kilograms that you need to strive for, because it has less risk of developing diseases.

How to calculate weight by height

The main way to calculate the ideal weight is used as the main indicator of a person's height. This method is popular due to the fact that it is very simple and also takes into account the type of physique. Normal weight with the growth of a certain value is calculated as follows:

• with asthenic type - P (cm) -110;
• with normosthenic type - P (cm) -103;
• with hypersthenic type - P (cm) -100.

How to calculate the correct weight based on age

The next method, how to calculate your weight (B), is also very simple. Only in it, as the main variables, two quantities are used at once - height and age. There is a reason for using this method. Some increase in weight over the years is considered the norm. Extra pounds in this case may not be "superfluous". Short notations are used in the calculation. The result will be optimal body weight. The calculation of the ideal weight, taking into account age, is done as follows:

50 + 0.75 * (P - 150) + (B - 20) / 4.

Ideal weight formula

There are other options for how to correctly calculate your weight. Most of them also take into account height and age. Depending on them, some amendments are introduced. A special coefficient is also used as a criterion - the body mass index, or BMI. Thanks to this indicator, conclusions are drawn about the onset of obesity or, conversely, anorexia. Read the information below and choose which ideal weight formula is right for you.

Quetelet index

The first instruction just uses a person's body mass index. The calculation is carried out for persons aged 18 to 65 years, i.е. for adults. To find BMI, you need to make the following calculation - MT / (P ^ 2). The notation "^2" indicates that the value is squared. Further, by the value of BMI, you can assess your condition:

• anorexia (urgent to the doctor) -
• insufficient - 17.5-18.5;
• the norm is 19-23 (if 18-25 years old);
• norm - 20-26 (from 25 years old);
• above the norm - 23-27.5 (if 18-25 years old);
• excess - 26-28 (from 25 years old);
• the initial stage of obesity - 27.5-30 (18-25 years old) or 28-31 (over 25 years old);
• the second degree of obesity - 30-35 (18-25 years old) or 31-36 (over 25 years old);
• the third degree of obesity - 35-40 (18-25 years old) or 36-41 (over 25 years old);
• the fourth degree of obesity -\u003e 40 (18-25 years old) or 41 (for people over 25).

Weight by body volume

If in other ways your figure is normal, but you observe some fullness, try using the waist-to-hip ratio. Using them, you can check not how much you need to weigh, but what proportions should be. For this, waist circumference (OK) is measured at the level of the navel. You will also need the volume of the hips (OB). As a result, for girls, the standard will be a value in the range of 0.65-0.85, and for men - 0.85-1.0. The calculation itself looks like this:

Brock's formula

The ideal weight, taking into account the physique, is calculated according to the Brock method. The definition of the type of figure on the wrist has already been described above. Then you can proceed to the calculation itself. Its algorithm is:

1. At the age of less than 40 years - P (cm) -110. If you are older - P (cm) -100.
2. The resulting number needs to be corrected. With the asthenic type, 1/10 of the calculated value is subtracted, with the hypersthenic type, 1/10, on the contrary, is added.

McCallum formula

One of the best ways to correctly calculate your ideal wrist weight is the John McCallum method. As a criterion, he used the circumference of the wrist. It serves as the basis for calculating the remaining average parameters of the figure. Therefore, it is rather not the optimal mass that is determined here, but the proportions to which it is worth striving. The girth of each part is determined as follows:

• 6.5% of the circumference of the wrist = chest circumference (CG);
• 85% OG = buttock volume;
• 70% OG = waist circumference;
• 53% OG = volume of one thigh;
• 37% OG = neck girth;
• 36% OG = bicep volume;
• 34% OG = circumference of one leg;
• 29% OH = forearm volume.

Lorentz formula

One of the simplest is the Lorentz weight formula. And it is only suitable for women. The designations remain the same. The calculation is as follows:

• (R (cm) - 100) - (R (cm) - 150) / 2.

Weight calculator online

Modern technology makes it possible to calculate your ideal weight online. To do this, you just need to open a browser, go to the search engine page. Next, you need to enter the appropriate request. The result - you will receive a list of links to follow. You can choose a calculator of calories, optimal weight, body volume, etc.

There are a variety of options for such calculators. Some take into account only height, for others, the calculation will depend on age. The BMI calculator stands out separately. You can even find out your body type online. There are options based on gender or lifestyle. If you want to lose weight or gain weight, then the basal metabolic rate calculator is for you. It's just a calorie counter that calculates your daily calorie intake based on your lifestyle.

Video: How to find out your correct weight

Do you know how to calculate your ideal weight? Yes, you can use complex medical formulas and spend a lot of time. An online ideal weight calculator will do it in just 3 seconds! Enjoy!

You can calculate the ideal weight in kilograms, in each case, using special medical formulas. Why is this needed? Firstly, in order to properly monitor your own health, since extra pounds are not only an aesthetic, but also a medical problem. Secondly, to monitor the progress of weight loss or weight gain.

Online ideal weight calculator

Using a free online calculator, you can determine the weight rate for a representative of any gender and age in a few seconds.

How to calculate ideal weight

For many centuries of existence, mankind has created enough formulas to help you find out your ideal weight. All of them are great for determining the boundaries of underweight and overweight, but they differ in complexity and the set of necessary initial data. The simplest and at the same time informative is the Lorentz formula, which allows you to calculate the ideal weight by height. The people called it the "dream formula".

The Lorentz method was developed in 1929. Suitable for people over 18 years old, height from 140 to 220 cm. It has two options - for women and for men. An undoubted advantage is obtaining indicators close to the results of more complex and time-consuming calculation methods.

For woman

The only indicator that you need to know to calculate the ideal weight using this formula is height in centimeters. It is not difficult to make accurate measurements of growth: you need to stand with your back to the wall, make a mark at the level where the top point of the head (crown) will be located and measure the result with a centimeter tape.

Calculations of ideal body weight are made according to the following formula: (height in cm - 100) - (height in cm - 150) / 2.

Example: (170-100) - (170-150)/2= 70-20/2=60.

The ideal weight for a 170 cm tall woman is 60 kg.

For a man

The Lorenz method is quite informative for men as well. Again, in order to determine the norm of its own weight, it is enough for a man to know his height in centimeters exactly. The calculation goes like this: (height in cm - 100) - (height in cm - 150) / 4.

Example: (180-100) - (180-150) / 4 = 72.5.

The norm for a man with a height of 180 cm is 72.5 kg.

How to find out the normal weight of a child

Since there are formulas for calculating weight based on age, it is possible to determine the norm for a small child, a teenage girl, and a young man. Formulas for children are different from adults, since with age there are some changes in the rate of metabolic processes. You can calculate the normal weight of a child using a free one.

Making such calculations is no less important than for an adult, because by identifying the ideal weight of a teenager, you can adjust his diet and prevent weight gain in the future.

Many people strive to lose weight by adhering to their own ideal standards. However, in pursuit of the parameters of the figure of a top model or actress, you can overdo it and harm the health of the body. Remember that the optimal body weight of a person is always calculated individually. Therefore, it is important to calculate the correct body weight. There are several formulas for this, and there is also a special weight and height calculator for men and women.

Before we talk about how to calculate the ideal weight, we note that each of us has an individual genetically predetermined value of the optimal body weight. It depends on the innate characteristics, the structure of the body. Therefore, any calculation of the norm of weight is conditional.

What determines the ideal weight of a person

Before moving on to the ideal body weight formula, it is important to understand what criteria affect the definition of a person's ideal weight. First, it is the gender of the person. A woman has a greater amount of fat by nature. Secondly, body type (normostenic, hypersthenic and asthenic). Thirdly, height and age play a significant role in calculating ideal weight. For example, it is much more difficult for people over 40 to lose weight due to the ongoing restructuring of the body.

The hereditary factor also plays an important role. If at the genetic level there is a predisposition to fullness, it is much more difficult to get rid of extra pounds. If we discard this factor, you can find out the weight norm for men and women using various formulas, we will consider each of them in more detail.

Body weight formulas for men and women

There are various weight and height calculators for adults and teenagers, but the easiest and surest way is to calculate the ideal weight by height yourself. There are many formulas developed by scientists that allow you to find out weight by height.

Brock's formula

The French physician Paul Brock developed the formula for the ratio of weight and height, which is still considered one of the most universal. The formula takes into account not only height, but also physique (lean, normal, stocky) and age.

Brock's ideal weight formula is as follows: height - 100. If a person has a thin physique, you need to subtract 10%, and if there is a stocky one, add 10%.

If the height is less than 165 cm, subtract 105, if above 175 cm, subtract 110. Age should also be taken into account. People between 20 and 30 years old need to reduce the figure you get by 10-12%. If you are over 50, increase it by 5-7%.

Lorentz method

Calculation of the optimal weight for women: (height - 100) - 0.25 x (height - 150).

Ideal weight formula for height and age

Weight norm for women by age and height: 0.9 × (50 + 0.5 × (Height, cm - 150)) + 0.5 × (age - 20)

Weight and height formula for men: 1 × (50 + 0.5 × (Height, cm - 150)) + 0.5 × (age - 20)

Tables of normal weight and height

In addition to special formulas, there are weight and height tables for men and women.

Quetelet index

We present a table of norms of weight and height for adults from 20 to 65 years. Please note that this calculation of weight and height for undergrowth, pregnant women, athletes and the elderly from 65 years of age is not suitable.

The result obtained must be compared with the height and weight table for girls and men:

Calculation of the ideal body weight of an adult Quetelet

This author has another table of ideal height and weight, taking into account the age and physique of a person. To find out the ratio of weight, height and physique, divide the weight in grams by the height in centimeters. Compare the result with the parameter in the specified cell, relative to your physique. The main criterion is to be honest with yourself when evaluating the physique.

Example: we calculate the normal weight with a height of 175 cm, age 25, weight 60 kg and a normal physique: 60,000 / 175 = 342.8. This is a normal index for this person.

Table of weight and height of an adult Egorov-Levitsky

To calculate the weight for a man and a woman using this table, you just need to compare the data. Be careful, this is not the ideal weight for men and women, but the maximum. Also remember that the table shows the height and weight of an adult from 20 to 69 years old.