Baby weight calculator. How to calculate the expected weight of the fetus

The indicators of the development of children according to the table provide parents with an approximate assessment of the physiological development of the baby. It presents the results of low, high, medium or very high scores. If the indicators are too low or too high, then this indicates a deviation from the norm.

If the deviation is above or below the average, then it's ok. specialists in the period from 1997 to 2003. a number of studies have been conducted that are aimed at studying the health of children from 0 to 1 year. And also studies were conducted for children from 18 to 71 months. The studies included parameters of weight and height of babies, their ratio and monthly increase. Why is there a need for new research? The last indicators of the normal body weight of a child were registered in the twentieth century in the 70s. For such a long time, the pace of life has changed, the ecological situation and nutrition have also changed.

In addition to these factors, there are many other influences on the overall development of children. Now babies are fed differently. Previously, the child's weight indicators were based on the fact that the baby is on artificial feeding. Now a large number of children is on breastfeeding, and this in a special way affects weight parameters. Children's research was carried out in various countries peace. Studies have been conducted in Brazil, Europe, India and the USA.

Baby weight and height calculator

Up to a year, weight is the most important indicator of an infant's health. The pediatrician weighs the baby every month. In addition, measurements are taken of the girth of the chest and head. All measurements are recorded in the medical record. Many factors are taken into account when determining normal development..

The factors that the child has suffered are taken into account. This includes: dehydration, intestinal infections, SARS, teething and loss of appetite. Improper development of the child may occur due to congenital pathologies, other disorders or chromosomal diseases.

They also contribute to its development social conditions in which the baby grew up. The development of the crumbs is affected by its feeding: breastfeeding or artificial. If the baby was born with low weight or premature, then his weight table will be different from children with normal weight. Parents of children born with low weight note that it is important for them to increase the child for every 10 g. They take into account every millimeter that was added when the crumbs grew up.

Features of the first year of life

When calculated using a calculator, the average weight of an infant at birth is between 3.3 and 3.8 kg. In this case, the height and weight calculator is normal. The norms of weight and height of children should correspond to his proper development. For example, when a baby is born normal weight, then within 7 days he does not notice an increase in weight. But in the first days of life, he loses a little body weight.

The average growth of a baby in 1 year is from 75 to 78 cm. The weight of a child is distributed over the years depending on the indicators of the calculator. And if the indicators differ from the norm, then parents and doctors must find the cause of the deviations. As a rule, in the first year of life, the baby grows by about 30 cm. More such intensive growth will not be observed in any period of the baby's life.

Children under one year of age are more sensitive to underweight. If the child is underweight, then the doctor can make the following diagnosis: an eating disorder, anemia, immunodeficiency, rickets, a violation of the central nervous system and endocrine diseases. If the baby has a lack of weight periodically, then he can lag behind not only in physical, but also in psychological development. If the baby is breastfed, then you need to make sure that there is enough milk in the mother’s breast. If the mother's lactation is disturbed, then the baby is advised to supplement with mixtures.

Growth chart from 1 year to 10 years

During this period, the ratio of weight and height is of great importance. At this age, the genetic heredity of the child is taken into account. And also it is necessary to take into account what diseases were transferred by the child. Doctors take into account congenital pathologies. Special attention during this period of a child's life, it is necessary to pay attention to his lifestyle, nutrition and metabolism. It is necessary to carefully monitor the correspondence of the weight and height of the baby . The weight of a girl from 1 to 10 years old changes in the following sequence:

    1. At 7 - 23.5 kg.
    1. At 8 - 26.7 kg.
    1. At 9 - 29.5 kilograms.
  1. At 10 - 32.7 kg - these are the average figures for girls.

Growth chart for girls aged 1 to 10 years represents the following values:

  1. In 1 year, the girl must have a height of at least 73.9 cm.
  2. B 2 - her height must be at least 86.5 cm.
  3. At 3 - 96.2 cm.
  4. At 4 - 103.8 cm.
  5. At 5 - 109.7 cm.
  6. At 6 - 116.2 cm.
  7. At 7 - 121.7 cm.
  8. At 8 - 127.8 cm.
  9. At 9 - 133.7 cm.
  10. At 10 - 139.7 cm.

For boys, the averages from 1 year to 10 years are slightly different. The weight of a boy from one year to 10 years old should be as follows:

  1. In 1 - 9.7 kilograms.
  2. At 2 - 13.3 kg.
  3. At 3 - 15.4 kilograms.
  4. At 4 - 17.4 kg.
  5. At 5 - 18.4 kg.
  6. At 6 - 21.6 kg.
  7. At 7 - 23.7 kg.
  8. At 8 - 26.5 kilograms.
  9. At 9 - 29.3 kg.
  10. At 10 - 32.3 kg.

The average height of boys from 1 year to 10 years is as follows:

    1. B 2 - 88.9 cm.
    1. At 3 - 97.2 cm.
    1. At 4 - 104.4 cm.
    1. At 5 - 111.5 cm.
    1. At 6 - 117.5 cm.
    1. At 7 - 122.8 cm.
    1. At 8 - 128.3 cm.
    1. At 9 - 133.7 cm.
  1. At 10 - 138.7 cm.

Table of height and weight of children under 18 years old

The ratio at this age is characterized by a large range of norms. If at this age boys short stature, and the girl has too rounded shapes, then this can be a reason for complexes. For parents, an important task is to set up psychologically their child for changes in their body. And also it is necessary to correctly explain why such changes occur. If a girl at this age is a little plump, then she is strictly prohibited from dieting to lose weight.

Weight table for girls from 11 to 18 years old:

  1. At 11 years old, a girl should weigh between 31 and 39 kilograms.
  2. At 12 - her weight should be from 37 to 46 kilograms.
  3. At 13 - from 44 to 53 kilograms.
  4. At 14 - from 49 to 59 kg.
  5. At 15 - from 51 to 61 kg.
  6. At 16 - from 52 to 62 kg.
  7. At 17 - from 50 to 53 kilograms.

Growth of girls from 11 to 18 years:

  1. At 11 - the girl should have a height of 141 to 149 cm.
  2. At 12 - from 146 to 155 cm.
  3. At 13 - from 151 to 160 cm.
  4. At 14 - from 156 to 164 cm.
  5. At 15 - from 158 to 167 cm.
  6. At 16 - from 160 to 167 cm.
  7. At 17 - from 159 to 169 cm.

Boys weight chart from 11 to 17 years old. Here the indicators are as follows:

  1. At 11 - the boy should weigh from 32 to 40 kilograms.
  2. At 12 - from 35 to 46 kilograms.
  3. At 13 - from 39 to 51 kilograms.
  4. At 14 - from 43 to 57 kilograms.
  5. At 15 - from 49 to 63 kg.
  6. At 16 - from 54 to 68 kilograms.
  7. At 17 - from 60 to 75 kilograms.

What should be the height of boys from 11 to 18 years old:

  1. At 11 - the boy should have a height of 139 to 149 cm. At 12 years old, from 144 to 155 cm.
  2. At 13 - from 150 to 161 cm.
  3. At 14 - from 157 to 168 cm.
  4. At 15 - from 163 to 174 cm.
  5. At 16 - from 168 to 179 cm.
  6. At 17 - from 172 to 183 cm.

What features happen to teenagers during puberty

As a rule, the growth of a girl occurs before the age of 19. Boys continue to grow until age 22. The largest growth spurt is seen in a girl between the ages of 10 and 13. Intensive growth in a boy is noticed from 13 to 17 years. The intensity of growth in adolescents is explained by a hormonal surge during puberty. The indicators in the table of weight and height for children are averaged.

When considering the data of any baby, it is necessary to take into account many factors, among which are the individual characteristics of the body and genetic predisposition. If a baby has an excess of mass or its shortage, then doctors look for the cause of the disease in the wrong daily routine, lifestyle, nutrition, in a stressful state of the crumbs, sleep duration and its nature.

The weight and height of the baby by months and years is shown in the table proposed by the World Health Organization. When determining the normal development of the crumbs, it is necessary to take into account many individual factors that affect the physiological development of boys and girls. If there is slow or intensive growth, or weight gain at any age in children, then parents should definitely consult with a specialist. Further, the pediatrician can refer the baby to a neurologist, geneticist, endocrinologist or gastroenterologist.

Outcome

According to the data given in the weight table, it is possible to determine the rate of development of a child in the period from 0 to 18 years. The table defines the average rate of indicators for children. If we compare the development of children with the indicators in the table, then we should not draw sudden conclusions. Because each child is individual, he has his own body and his own characteristics of growth and body weight. If the baby has an active or passive weight gain or growth, then a medical examination is urgently needed.

Norms of weight and height of children depends on the conditions of residence and care for him. The baby in the first days of life loses a little body weight. The average weight of an infant after birth is between 3.5 and 3.8 kilograms. The most critical age is considered from 1 year to 10 years. During this period, parents should especially carefully monitor their child. Because now there is an adjustment of functioning internal organs.

If the child does not eat well, does not perform the necessary physical activity, then later this can lead to serious and irreversible consequences. For example, anorexia or scoliosis. Features of the development of adolescents from 11 to 17 years old: the stage of puberty begins, intensive growth of girls from 10 to 13 years old, and in boys from 14 to 17 years old. Due to the hormonal surge, intensive growth occurs. During this period, adolescent weight gain slows down.

Very short: Z significant growth retardation, may be accompanied by excess weight. An examination by a specialist is necessary to determine the cause and eliminate the stunting. Undersized : Oh stunted growth also sometimes leads to excess weight. It is recommended to consult a doctor. Below average : N Small child, but growth within the normal range.. Medium : U the child is of average height, like most healthy children. Above average : tall baby growth is within the normal range. High : T This growth is rare, mostly hereditary and cannot indicate the presence of any abnormalities. Very high : T what growth can be as the norm, in the presence of tall parents as well as a sign of endocrine disease. We recommend consulting with experts. Growth does not match age : Height does not correspond to age - perhaps an error when entering indicators. Please check the data and use the calculator again. If the data is correct, this is a clear deviation from the norm. A detailed examination by a specialist is required.

Baby weight

By itself, weight without taking into account height and other data does not provide a deep assessment of the development of the child. However, the "Low Weight" and "Extremely High Weight" scores are sufficient for a doctor's consultation (see centile weight tables for more details).

Possible weight estimates:

Strong underweight, extremely low weight : It is highly likely that the child suffers from exhaustion of the body. An immediate examination by a doctor is necessary. Underweight, low weight: Probably, the child's body is exhausted, a specialist examination is necessary. Less than average: The weight is in the lower limits of the normal weight for the indicated age. Average : The child has an average weight, the same as most healthy children. Larger than average : Extra large : When obtaining this estimate, weight should be estimated based on BMI (body mass index) data. Weight does not match age : There may have been a data entry error. If all the data is correct, the child most likely has problems developing height or weight (see height and BMI estimates). Be sure to consult with an experienced doctor.

Body mass index

To assess the harmonious development of a child, it is customary to look at the ratio of height and weight - Body Mass Index (BMI). This indicator allows you to most accurately determine the deviations in the weight of the child, or, conversely, shows that the weight of the child in relation to height for his age is normal.

It should be understood that this BMI indicator for each age of the child is different and even more different from the indicators of an adult, therefore this calculator must take into account both the height and the age of the child for a correct calculation (see)

Body mass index estimates:

Severe underweight : Great exhaustion of the body. Diet needs to be adjusted as directed by a doctor. Underweight : Exhaustion. Diet needs to be adjusted as directed by a physician. Reduced weight : The lower limit of the norm. The child has less weight than most of his peers. Norm: Optimal ratio of height and weight. Increased weight: The upper limit of the norm. The child is somewhat heavier than most of his peers. In the future, there is a risk of gaining excess weight. Overweight : The child is overweight. It is recommended to correct the diet as prescribed by the doctor. Obesity : It is necessary to adjust the diet as prescribed by the doctor and increase the physical activity of the child. Can't be assessed : BMI readings are much higher than normal, you may have made a mistake when indicating height and weight. If the data is correct, then the child is probably severely obese and the help of an experienced doctor is needed.

The percentage of overweight children worldwide is increasing at an alarming rate - on average, one in three adolescents or children are now overweight or obese.

Now many children spend little time on training and outdoor games, they spend more time in front of the TV, playing video games or the computer. And in many working, busy families, parents have less free time to prepare healthy, home-cooked meals. From fast food to the computer, fast and in a hurry is the reality for many families.

Keeping children from being overweight means establishing the right diet and sports in the family, as well as useful rest together. We must include our children in a healthy lifestyle by our own example.

Is your child underweight or overweight?

The World Health Organization (WHO), the US Department of Health, and most countries around the world successfully use BMI - body mass index - which is based on the ratio of height and weight, and the subsequent calculation of the percentage of fat in the human body to assess excess weight in adults and children. The BMI calculation method is the development of Adolf Quetelet and for children it provides a special scheme. First you need to calculate the BMI of the child according to the general formula:

Body mass index (BMI) calculator using the Quetelet formula

Since children and adolescents are characterized by active growth and development, their BMI can change significantly over a short period of time. Therefore, the usual assessment of BMI, common in adults, is not suitable for them. In order to accurately and correctly estimate the body mass index of a child, scientists examined the ratio of mass and height of many thousands of children. And when it comes to determining whether your child's BMI is normal or out of range, comparison tables - "percentage curves", or distribution scales - with averages for children of this age and height will give you the opportunity to understand whether weight needs to be adjusted. In this way, your child's body mass index is compared to the average of thousands of other children. This approach takes into account the developmental stages that children go through in certain age groups. For example, if a child has a body mass index higher than 97% of children of the same age, then it can be concluded that the child is overweight.
This table contains information on the BMI of adolescents and children of both sexes from 2 to 20 years.

As a result, your child's BMI will fall into one of four categories:

  • Lack of weight: BMI below the 5th average (percentage curve);
  • healthy weight: BMI between 5th and 85th average;
  • Overweight: BMI between 85 and 95;
  • Obesity: BMI is in the region of 95 or higher.
For children under 2 years of age, doctors use weight-for-height charts and a thorough physical examination.

Table for estimating the weight and height of a child by BMI



At the same time, BMI is not an ideal indicator of the amount of body fat and can be misleading in some cases. For example, a heavily muscled teenager can have a high BMI without being overweight (muscle is added to body weight, not overweight). In addition, BMI can be difficult to estimate correctly during puberty, during which young people go through stages of rapid growth. In any case, it's important to remember that BMI is generally a good indicator, but it's not a direct measurement of body fat.

To establish the exact percentage of adipose tissue allows bioimpedance analysis. With the help of a certain device, a weak, safe electric current is passed through the body, changing its frequency. Different tissues of the body have different resistance to electric current, thus, it becomes possible to calculate what proportion of the body is muscle, and what proportion is bone and fat.

If you are concerned that your child may be overweight or underweight, arrange an appointment with your primary care physician who will evaluate your diet and physical activity levels and suggest positive changes. Your doctor may also recommend prevention for certain conditions associated with being underweight or obese.

Norms of weight and height of the child by age

Table of height and weight of a child up to a year

Age Height in cm Weight in kg.
Very low Short Average High Very tall Very low Short Average High Very tall

1 month

49.5 cm. 51.2 cm. 54.5cm. 56.5cm. 57.3 cm. 3.3 kg. 3.6kg. 4.3kg. 5.1kg. 5.4kg.

2 month

52.6cm. 53.8cm. 57.3 cm. 59.4 cm. 60.9cm. 3.9 kg. 4.2kg. 5.1kg. 6.0kg. 6.4kg.

3 months

55.3 cm. 56.5cm. 60.0 cm. 62.0 cm. 63.8cm. 4.5kg. 4.9kg. 5.8kg. 7.0kg. 7.3kg.

4 months

57.5cm. 58.7cm. 62.0 cm. 64.5cm. 66.3 cm. 5.1kg. 5.5kg. 6.5kg. 7.6kg. 8.1kg.

5 months

59.9cm. 61.1 cm. 64.3 cm. 67cm 68.9cm. 5.6kg. 6.1kg. 7.1kg. 8.3kg. 8.8kg.

6 months

61.7cm. 63cm 66.1 cm. 69cm 71.2cm. 6.1kg. 6.6kg. 7.6kg. 9.0kg. 9.4kg.

7 months

63.8cm. 65.1 cm. 68cm 71.1 cm. 73.5cm. 6.6kg. 7.1kg. 8.2kg. 9.5kg. 9.9kg.

8 months

65.5cm. 66.8cm. 70cm 73.1 cm. 75.3 cm. 7.1kg. 7.5kg. 8.6kg. 10kg. 10.5kg.

9 months

67.3 cm. 68.2 cm. 71.3cm. 75.1 cm. 78.8cm. 7.5kg. 7.9kg. 9.1kg. 10.5kg. 11kg.

10 months

68.8cm. 69.1 cm. 73cm 76.9cm. 78.8cm. 7.9kg.
8.3kg. 9.5kg. 10.9kg. 11.4kg.

11 months

70.1 cm. 71.3cm. 74.3cm. 78cm 80.3 cm.
8.2kg.
8.6kg. 9.8kg. 11.2kg. 11.8kg.
Very low Short Average High Very tall Very low Short Average High Very tall

Table of height and weight of the child by year

Height in cm Weight in kg.
Very low Short Average High Very tall Very low Short Average High Very tall

1 year

71.2cm. 72.3 cm. 75.5cm. 79.7cm. 81.7cm. 8.5kg. 8.9kg. 10.0kg. 11.6kg. 12.1kg.

2 years

81.3 cm. 83cm 86.8cm. 90.8 cm. 94cm 10.6kg. 11kg. 12.6kg. 14.2kg. 15.0kg.

3 years

88cm 90cm 96cm 102.0 cm. 104.5 cm. 12.1kg. 12.8kg. 14.8kg. 16.9kg. 17.7kg.

4 years

93.2 cm. 95.5 cm. 102cm. 108cm. 110.6 cm. 13.4kg. 14.2kg. 16.4kg. 19.4kg. 20.3kg.

5 years

98.9cm. 101,5 108.3 cm. 114.5 cm. 117cm. 14.8kg. 15.7kg. 18.3kg. 21.7kg. 23.4kg.

6 years

105cm. 107.7 cm. 115m 121.1 cm. 123.8cm. 16.3kg. 17.5kg. 20.4kg. 24.7kg. 26.7kg.

7 years

111cm. 113.6cm. 121.2 cm. 128cm. 130.6cm. 18kg. 19.5kg. 22.9kg. 28kg. 30.8kg.

8 years

116.3 cm. 119cm. 126.9cm. 134.5 cm. 137cm. 20kg. 21.5kg. 25.5kg. 31.4kg. 35.5kg.

9 years

121.5 cm. 124.7 cm. 133.4 cm. 140.3 cm. 143cm. 21.9kg. 23.5kg. 28.1kg. 35.1kg. 39.1kg.

10 years

126.3 cm. 129.4 cm. 137.8 cm. 146.7 cm. 149.2 cm. 23.9kg. 25.6kg. 31.4kg. 39.7kg. 44.7kg.

11 years

131.3 cm. 134.5 cm. 143.2 cm. 152.9cm. 156.2 cm. 26kg. 28kg. 34.9kg. 44.9kg. 51.5kg.

12 years

136.2 cm. 140cm. 149.2 cm. 159.5 cm. 163.5 cm. 28.2kg. 30.7kg. 38.8kg. 50.6kg. 58.7kg.

13 years

141.8 cm. 145.7 cm. 154.8 cm. 166cm. 170.7 cm. 30.9kg. 33.8kg. 43.4kg. 56.8kg. 66.0kg.

14 years

148.3 cm. 152.3 cm. 161.2 cm. 172cm 176.7 cm. 34.3kg. 38kg. 48.8kg. 63.4kg. 73.2kg.

15 years

154.6 cm. 158.6 cm. 166.8cm. 177.6 cm. 181.6 cm. 38.7kg. 43kg. 54.8kg. 70kg. 80.1kg.
Very low Short Average
High
very high Very low Short Average High very high

Prevention of overweight and obesity

The key to keeping kids of all ages at a healthy weight is lifestyle for the whole family. This is what is "preached" in the family. Do physical activity and healthy eating family hobby. To make it fun for the kids too, let them help plan healthy menus and prepare meals, and take them to the grocery store so they learn how to choose healthy and healthy foods.
Don't fall into these common nutrition traps:
  • Do not reward children for good behavior and don't try to keep them from bad behavior with sweets or treats. Reward or punishment should not include food, there are many other effective and right ways education.
  • Don't Support the "Clean Plate Policy". Watch for signs that your child is hungry. Even babies who turn away from a bottle or breast report that they are full. If the children are full, do not force them to continue eating. Remind ourselves that we should only eat when we are hungry.
  • Don't talk about "unhealthy foods" and don't completely eliminate all sweets and favorite treats from the children's menu. Children are more likely to rebel and eat in large quantities these harmful foods outside the home or when parents are not seeing.

conclusions

It is not easy to motivate a child for a result, he cannot be “put” on a diet. In its turn, adolescence complicated by the fact that there is a danger of self-rejection, isolation, depression, anorexia. Once you've figured out if your child needs weight management, we'd like to make some additional recommendations for kids of all ages:
  • From birth to 1 year: In addition to the well-known health benefits, breastfeeding can help prevent excessive weight gain as well. And although the exact mechanism has not yet been established, breastfed babies feel their hunger and satiety more clearly, thus protecting themselves from overeating.
  • From 1 year to 5 years: develop good habits better with early years. Help your child establish healthy eating habits by offering a variety of healthy foods. Encourage the child's natural inclination to activity and help him develop.
  • 6 to 12 years old: Keep your child physically active every day. Let it be Sport section or outdoor games in the yard. Encourage activity at home too - in everyday household work and in joint games and weekend walks. Teach your child to choose healthy and healthy foods, help him pack his own sandwiches for school.
  • 13 to 18 years old: Teenagers often lean towards fast food, but try to encourage them to eat healthier. For example, sandwiches with baked chicken meat, salads and smaller portions. Teach them how to cook delicious healthy meals and treats at home. Help them maintain physical activity every day.
  • All ages: Reduce the amount of time your child spends in front of the TV, computer and playing video games. Fight your child's habit of eating by watching TV or a computer monitor. Try to prepare and offer your child a variety of healthy foods. Try to have breakfast, lunch and dinner with your child together. Encourage children to eat vegetables and fruits at least five times a day, limit sugary drinks, and never skip breakfast.
By eating right, exercising frequently, and incorporating healthy habits into your family's normal daily routine, you are building a healthy lifestyle for your children that they can continue to maintain. Explain to them the importance of physical activity and proper nutrition, but be sure to make it a shared family habit so that it becomes second nature to each of you.

But above all, let your children know that you love them regardless of their weight, and your main desire is to help them be happy and healthy.

The parameters of the height and weight of a small child enable the doctor to assess its development and the correct functioning of internal organs and systems. A deviation from the norm indicates some kind of malfunction in the body or the need to change the baby's diet. In infancy, height and weight are extremely important parameters and are evaluated in fact and in dynamics every month.

Online weight and height calculator

In infancy, even minor changes in the development of the child matter. An online calculator will help you estimate the height and weight of the baby, taking into account his age to the nearest day. Such a system eliminates the need to constantly look for the norms of parameters and their correspondence to reality. Just one click of a button will give you a ready assessment and preliminary conclusions. The online calculator fully replaces the table used by all pediatricians, while taking into account the errors allowed for babies of different sexes.

Child height and weight calculator widget

Years 0 1 2 3 4

months 0 1 2 3 4 5 6 7 8 9 10 11 12

Height and weight of the child

The pediatrician evaluates height and weight, both separately and relative to each other. For example, a normal increase in these indicators in a child up to a year is:

Age, monthsWeight gain per monthGrowth increase per month
1 600 3
2 800 3
3 800 2,5
4 750 2,5
5 700 2
6 650 2
7 600 2
8 550 2
9 500 1,5
10 450 1,5
11 400 1,5
12 350 1,5

These figures are average and may vary slightly in any direction. For a more accurate assessment of height and weight, pediatricians use centile tables, which indicate normal increases in the parameters described above, as well as intervals of deviation from the norm. In centile tables, height and weight are calculated more accurately, and they are developed separately for each gender of the child. For example, conditionally normative values ​​for the growth of a girl according to these tables look like this:

After you have found your child's indicators in the table, you look at what percentage interval they fall into. Based on the results, one of the following conclusions is made:

  1. The value falls in the range of 25-75: the absolute norm, the child develops well.
  2. 10-25: interval below average. You may need to adjust your diet. The indicator is not a serious deviation from the norm.
  3. 75-90: above average. Most likely, the deviation is caused by individual hereditary characteristics and is not a pathology.
  4. 3-10: Possible developmental problems, further examination required.
  5. 90-97: required increased attention To physical development pathological process is not excluded.

Also, the parameters of height and weight are estimated relative to each other. Below is a table that checks the ratio of body weight to the height of a girl:

Reasons for fast and slow weight gain

According to the norms, by the end of the first year of life, the child adds about 7 kilograms of weight. Permissible deviations are also taken into account, but at this age they are insignificant. What if your child develops differently? What reasons can provoke too fast or slow weight gain?

Causes of slow weight gain in infants:

  1. Natural weight loss after birth. Typically, a baby loses weight in the first few days of life due to the stress of birth and adjustment to new environments. Sometimes this period can take a little longer.
  2. Incorrect chest grip. If the baby is not properly attached to the breast, he may not get enough fatty hindmilk and gain weight poorly.
  3. Use of bottles and pacifiers. Fast and infrequent feedings, which are typical for artificial feeding, lead to insufficient weight gain.
  4. Soldering. If baby supplemented with water, he will eat less milk and receive insufficient nutrients.
  5. Lack of mother's milk. If the mother is healthy and feeds the child on demand, she will have enough milk - this is how nature intended. Insufficient production may appear due to illness, another pregnancy, excessive physical activity, supplementation with artificial mixtures.

Overweight is more common in formula-fed children. Using mixtures, it is necessary to strictly observe the interval between feedings and dosage, taking into account the age of the child. Sometimes rapid weight gain may indicate the presence of diseases or a genetic predisposition.

The main thing that doctors pay attention to is the condition of the child. If his weight is slightly different from the norm, but the baby is active and good mood most likely nothing to worry about.

What determines the increase in growth

Normal is the growth of a newborn in the range of 46-56 cm. During the first year of life, the child makes a colossal leap in growth, increasing it by approximately 27 cm, that is, by more than 50%. As a rule, growth parameters are laid down genetically. In short and small parents, the child will be just as miniature.

If growth retardation is provoked pathological processes, for example, a lack of growth hormone, then the deviation in development will be noticeable immediately from birth, and can even be detected during prenatal period. Many pathologies can be easily corrected, and with timely treatment, the child will not differ from his peers. To do this, the endocrinologist will prescribe drugs based on growth hormone, which should be periodically injected to the child.

Height, unlike weight, is difficult to influence with lifestyle or dietary changes. If the child begins to eat more, but the excess nutrients are not used up for energy production, then it will be deposited in the form of body fat. However, extra centimeters in height will not be added.

After the first year of life, a strong jump in the growth of the child will occur during puberty. Many children who were low in kindergarten or school catch up with and even overtake their peers during puberty.

Pediatricians also evaluate growth not only in absolute terms, but also in dynamics. The growth of a child older than 2 years should increase by at least 4 cm per year. In the first two years of life, this happens 2-3 times more actively.

For most parents, the main indicator of a child's health is a good appetite, while they are also afraid of both the appearance of extra pounds and their lack. However, it is not at all easy to independently calculate how much the body weight of a son or daughter corresponds to height and age, because up to 18 years old “adult” methods of such measurements are not suitable for them. That is why it is necessary to have at hand a special online baby weight calculator, which is presented on our website. With the help of this service, you can easily and simply get accessible information about the development of your children by marking the necessary parameters in the appropriate fields.

Child height and weight calculator

Select the gender and age of the child to find out what the parameters of your child should be according to WHO (World Health Organization) standards

Low kg

Average kg

high kg

low cm

How does it work

This calculator plays a very important role in helping parents assess the condition of their child, get rid of doubts, find out the need to adjust the child's diet in one direction or another, and at the same time avoid weight jumps. The main parameters that are required to calculate the rate are:

  • dependence on sex and age;
  • ratio of weight and height.

The method of using the online calculator is as follows:

  1. Mark the gender and select the age of the child, click "Calculate".
  2. Measure his height and weigh him. Measurements and weighing should be performed in the morning, on an empty stomach, after going to the toilet, barefoot, in light underwear.
  3. Compare the received data with the parameters of the calculator.

The norms issued in the results of the calculation are set by the World Health Organization separately for boys and girls. Our website uses the most up-to-date data that can be used to interpret the height and weight of children up to and including 17 years of age.

To establish new standards for child development UNICEF, WHO and a number of United Nations organizations conducted a large-scale project during which 9,000 boys and girls were examined. All of them were brought up in a favorable environment with in a healthy way life and the right diet. The result of the obtained data was graphs of parameters from toddlers to adolescents. These graphs reflect not only absolute indicators, but also the relationship between height and weight. It is this ratio that gives the most complete picture of how harmonious development is for a particular child or teenager. Our calculator is based on this method.

Interpretation of results

As a result of the calculation on the calculator, indicators of height and weight are given - low, medium and high. Each of them is interpreted accordingly.

Height (length)

In babies under 3 years of age, body length is measured, after 3 years of age - growth in a standing position. Between these parameters, the difference can be on the order of 1 cm, which will affect the results of the assessment. Therefore, for the accuracy of the calculation of young children, it is recommended to measure it with a pediatrician, since this indicator is one of the most important.

Possible height (length) estimates using the calculator:

  1. Very low - much below the norm, which indicates a significant developmental delay, often accompanied by extra pounds. An examination by a doctor is recommended to identify the cause and treatment.
  2. Low - a slight lag, can also lead to an excess of kilograms. It is desirable to consult a specialist.
  3. Below average - low, but within the normal range.
  4. Average - is determined in many healthy boys and girls.
  5. Above average - within the normal range.
  6. High - rare and usually hereditary, not indicating any abnormalities.
  7. Very high - may be the norm if the parents also differ in the same parameters, or a sign of an endocrine disorder. It is recommended to consult a doctor.

By itself, the weight indicator does not fully assess the development of the child. But if, according to the results of the calculator, body weight is determined as very low or extremely large, then this is the reason for going to the doctor.

Possible estimates on the calculator:

  1. Very low - there is a great danger of exhaustion of the body. An immediate examination by a specialist is required.
  2. Low - there is also a possibility of exhaustion, a doctor's consultation is necessary.
  3. Below average - the lower limit of the norm, the diet should be reviewed.
  4. Medium is ideal for many healthy girls and boys.
  5. Above average - with this indicator, an assessment should be made taking into account BMI.
  6. Very large - also estimated based on body mass index.

Body mass index

The harmony of a child's development does not depend on age, but is determined by the body mass index (BMI), which is calculated as the ratio of height and weight. So, ideal weight for a girl of 13 years of average height (151.8 cm) will be 43 kg, and for a 14-year-old low (147.8 cm) - 37.6 kg. In adolescent boys, this difference is less pronounced, since during this period they develop less intensively. For example, a short (136.2 cm) teenager of 12 years old should weigh 28.2 kg, while a boy of 11 years of average (138.5 cm) height should weigh 31 kg.

Body mass index is individual for each person. It can be calculated on our website. It should also be borne in mind that there are reasons that affect the decrease or increase in kilograms. Almost all of them can be adjusted to reach the optimal body weight.

weight factors

Almost all deviations from the norm, determined when calculating on an online calculator, should not be a reason for panic. The main parameters for losing weight or gaining kilograms depend on a number of different factors that must be taken into account:

  1. genetic predisposition. In large parents, the descendants will also have deviations in the same parameters upwards. And thin short parents very rarely grow up a daughter or son with overweight body.
  2. Health status. Both diseases that directly affect weight (for example, endocrine diseases) and common diseases that worsen the baby's well-being play a role here, which leads to loss of appetite.
  3. Appetite. Everyone has a different attitude to food and a different appetite. If the mass does not strongly deviate from the norm, you should not force or restrict food, but the diet should be healthy - without fast food, chips, soda and other junk food.
  4. Lifestyle. This is the most common reason for gaining excess pounds. Today's children spend little time outside, doing sports or playing active games. Parents should limit the time spent sitting at the computer and properly organize the daily routine.

By ensuring the correct regimen, active pastime, eating healthy and tasty food, you can completely avoid the appearance of extra pounds in your son or daughter or their lack due to lack of appetite. And using an online calculator will help you easily monitor their harmonious development.