Norms of height and weight of a child up to one year

Table of height and weight of children up to one year by month: norms and deviations in surcharges

Last update of the article: 02.05.2018

  • premature or premature was originally a baby;
  • constitutional, hereditary features of the parents;
  • the sex of the child;
  • the type of feeding (breast, artificial);
  • the presence of concomitant diseases.

Tables of weight and height (cent tables) exist, which show the average values of the weight and height norm. You can find them on the Internet. But, as a rule, they are intended for doctors to evaluate the child's development objectively. The weight with which the baby was born does not always affect its development during the year, if we are talking about a healthy child born in the period from 38 to 40 weeks of pregnancy. Weight at birth depends on how the expectant mother ate during pregnancy, what lifestyle she lived in (active or sedentary).

Not always the weight of a child of 4,000 grams, for example, at birth indicates that he will add more than a baby weighing from 2,700-2,900 grams. It all depends on the factors described below.

The average weight of a child born at birth is 3,500 grams for boys and 3,350 grams for girls. Deviations from the norm from 2,700 grams to 4,000 grams are allowed. Body length varies between 46 – 56 cm, on average – 50 cm

We will take the rate of increase in weight by months in newborns.

Monthly weight gain in newborns

Monthly weight gain in the first 6 months of life is 800 grams on average. In the second half of the year, the infant's weight gain rate was 400 grams.

Totally, the baby's weight increased by 200 grams per week before six months and 100 grams per week after six months, respectively.

Retirement of the child by month

Retirement of the healthy child during the first 12 months of life increases by a total of 25 cm. More precise indicators are given in the tables of growth and weight.

Norms of monthly increase in body length:

  • 1 quarter – 3 cm monthly;
  • 2 quarter – 2.5 cm monthly;
  • 3 quarter – 2 cm monthly;
  • 4 quarter – 1-1.5 cm monthly.

Better indicators of the norm of growth and weight of children up to one year are given in the central tables of growth and weight.

Association of height and weight gain of premature infants

If the child is premature, the weight and body length gain depends on the gestational age (i.e. the week in which the child was born). As a rule, the weight and body length dialing schedule for these children is individual for each specific case. And the weight and height indicators differ with respect to denunciated children.

We will take the weight of the child by months in case of premature birth:

  • during the first 6 months of the year, the average monthly increase in body weight for children born with a body weight of up to 1,000 grams is about 600 grams, with a weight of 1,000 – 1,500 – about 740 grams, and with a weight of 1,500-2,500 grams – about 870 grams;
  • in the second half of the year, children born with a body weight of up to 1000 grams are added to the monthly weight of about 800 grams, and for larger babies the monthly increase is 600 grams.

Premature growth in the first year of life increases by 26.6 – 36 cm. They usually catch up with their peers by the time they're 2-3 years old.

How do the constitutional features of the body and the hereditary factor influence the height and weight of the child up to one year?

Most parents like to compare their child with others. For instance: “Here, a girlfriend (neighbors, relatives) has a child the same age as mine and weighs a lot more than mine. Why are we adding up badly? So, something is wrong”.

And it seems that there is something to think about, but don't panic. We're all different in our genetic make-up, someone thin and tall, someone stocky and low. So, these are the types of constitutions:

  • normostenic;
  • asthenic;
  • hyperstatic.

Factors such as heredity also affect the development of the child. If the mother and father are short, and there is no one high in the nearest pedigree, you should not expect your child to add 5 cm every month. This principle partly applies to the weight of the child. What nature has in store for us, we can't change.

Boys are in most cases more powerful at birth than girls. Accordingly, the increase in weight and height will be different. These differences are also found in the special centile tables.

Influence of the type of feeding on the newborn's weight set

In this point I would like to note such nuance as baby's food. Previously, it was believed that you can only feed them on artificial food. However, there are cases and quite common, when the mother overfeeds the child with breast milk.

In both cases there is an intensive increase not so much in body length as in body weight. That is, if the child increases in height every month in the area of average figures and 1 500 – 2 000 grams in weight, it is worth thinking about whether it is too much and often we feed the baby.

After all, uncontrolled feeding leads to such consequences as the delay of motor development and skills. The child later flips over, sits down, gets up, it's hard for him, it's too heavy for him. The musculoskeletal system is being disrupted, obesity may develop and many unpleasant consequences may arise.

Concerning diseases and physical development

Kids with some diseases increase their height and weight less. Or, on the contrary, there is a situation when the presence of a certain disease causes a larger increase in comparison with healthy children. There are many more diseases, so let's try to understand them by selecting the frequently occurring groups of diseases:

  1. Cardiovascular diseases. Congenital heart defects, especially complex, with circulatory disorders, heart failure. The reason for the weight deficit in this case is the following point. Because of the defect, the heart is not functioning properly, blood circulation is insufficient, oxygen and nutrient exchange between the organ tissue is reduced, and muscles and blood vessels also suffer. This is expressed in the child's developmental delay.
  2. Diseases of the bronchopulmonary system. BLD (bronchopulmonary dysplasia), malformations of the trachea, bronchi, lungs, severe intrauterine pneumonia. All of these diseases have an effect on blood circulation disorders. There is a decrease in the supply of oxygen to tissues and organs, which leads to a poor increase in weight and height of the child.
  3. Diseases of the gastrointestinal tract. Malformations of the intestine, esophagus, liver, bile ducts (pylorostenosis, intestinal atresia). Such problems are solved expeditiously in the early stages after birth. Gastroesophageal reflux (pathological throwing of stomach contents into the esophagus), viral hepatitis, inflammatory diseases of the intestine, in which the absorption of nutrients through the intestine wall is disturbed; acute intestinal infections suffered.
  4. Diseases of the endocrine system. Congenital hypothyroidism causes an excessive increase in body weight due to the accumulation of excess fluid in the body of the newborn baby and the formation of subcutaneous fat swelling. Neonatal screening, which is carried out on all newborns up to 1 month of age, allows for the elimination of this disease.

Usually the blood is taken from a newborn baby in the hospital from the heel. High weight gain can be influenced by such genetic syndromes as Praderra-Willie, Shereševo Turner, Itzenko-Cushing. These diagnoses can only be made by your doctor or a narrow specialist (geneticist, endocrinologist). In order not to wonder if my child is developing normally, I only need to visit my paediatrician every month, who will examine the child and monitor the increase in weight and height. Then he'll tell you how the baby develops. If necessary, prescribe a timely examination and treatment if required.

Assessment of the article:



The child's growth rates by month. Tables of height, weight, head circumference of girls and boys, reasons for deviations

Norms of height and weight of a child up to one year

The paediatrician should regularly assess physical development parameters such as the height and weight of the child by months to one year, as well as the circumference of the breast and head.

He compares the data with the values in the special tables and concludes whether the results are within normal range or not. Changes in these values show whether the baby is developing harmoniously.

Most doctors are concerned about the deviation from the average head size. However, there are reasons not to worry prematurely.

The district doctor should measure your baby's head circumference, weight, and height each month

So if the baby was born large and ahead of his or her peers, the head size may be higher than normal.

All changes should be evenly increased. Too fast or too slow a pace, as well as an uneven increase in a certain value, is an additional reason to consult a doctor.

How the baby grows to 1 year

The newborn baby is usually between 45 and 55 cm long.

The increase in weight is:

  • in the first 3 months of life – by 3 cm monthly;
  • from 3 to 6 months the crumb grows by 2-2.5 cm each month;
  • from 6 to 9 – by 1.5-2 cm;
  • from 9 to 12 cm the breastplate increases the index by 1 cm per month.

Watching your child grow up every month is very exciting

On average, in the first year of life, the baby grows to 70-80 cm

There are special tables to help calculate this parameter according to the age of the crumb.

This scheme contains the average of the commonly used values.

There are also tables that divide the growth level into “low”, “medium” and “high”. The doctor is based on these data and can judge for deviations from the norm.

Bottom are the growth tables of the child by months up to one year.

Monthly growth rates for children up to one year

Monthly growth rates for children


Rost of a child in 2 months

HighHigh52.4-54.458.4 ±2.062.5-64.5

Rost of a child in 3 months


Rost of a child in 4 months


Rost of a child in 5 months


Rost of a child in 6 months


Child's 7-month height



Rost of a child in 8 months


Rost of a child in 9 months


Rost of a child in 10 months


Child's 11-month height



Rose of a child in 1 year




Growth chart for children under 12 can be found here.

The baby grows more intensively in the first 3 months of its life, and then the growth rate decreases, and by the end of the first year the baby grows more slowly.

Don't go too far with the table. The values are indicative, so small deviations from the average values do not represent signs of pathology.

How to measure an infant's body length

To observe the increase in this parameter in a crumb, it is not necessary to wait for the next paediatrician's appointment. The parents can decide on their own at home. To do this, it is necessary to have a soft centimetre tape or a long meter-long ruler:

  1. The baby is placed on the crib in the position on the back so that it rests on the back of the head against a hard surface.
  2. The baby's legs are stretched out in the right direction so that the feet are positioned at an angle of 90 degrees, and parents mark the place where the heel ends.
  3. Then the baby is raised and the length from the headboard to the mark is measured.

Pletnev I.N, Pediatrician pharmacist, Mom and Baby Health Clinic, Saratov

While measuring a child's height by month, there are sometimes erroneous results, as this is a subjective study.

To see the baby grow, it's enough to see the size of the clothes the baby wears.

5 factors affecting the growth rate of the infant

  1. Handlessness. If the parents aren't tall, there's a good chance that the children will be the same too. If the mother is a model and the father is a basketball player, don't expect the child to be stunted

  2. The course of pregnancy and childbirth. Whether the baby was born on time, whether the mother smoked during HT and during childbirth, and whether she drank alcoholic beverages – all this affects the size of growth. The fact is that, being in the womb, the baby is very susceptible to various violations of my mother's discipline during pregnancy.
  3. Social factors:
  • Educational balance: natural or artificial feeding, its frequency;
  • the baby's location in the family, its importance as a member of the family;
  • emotional status of the baby and the state of the nervous system.

Fedoseev S.N, Pediatrician, doctor of the highest category, Municipal Children's Hospital No.3, Cheboksary.

In order for the baby to grow evenly according to the values of the norm, it is desirable that the baby was breastfed.

Daily walks in the fresh air will be useful, as well as full sleep and regular check-ups with the local pediatrician.

  1. Somatotropic hormone. This hormone is responsible for the growth of the human body. It accelerates the growth of the limb bones of the limbs. 70% somatotropin is produced at night. Therefore, when a little man goes to bed late, often wakes up, the hormone production is disturbed. Its maximum level is observed during puberty.
  2. Lack of congenital anomalies in the baby that prevent the normal development of crumbs.

Find out the factors influencing the weight gain in newborns here.

What to do if the indicators differ from the norm, whether to worry

Estimating the degree of deviation of the baby from the norms of development is done exclusively by an experienced pediatrician. If the doctor suspects any signs of diseases that affect these parameters, he will refer them to a specialist for consultation.

A child's level of development is determined by measurements of height, weight, and head circumference in the complex

Parents should worry only when the child's height by months to a year deviates significantly from the average, as such a disorder can lead to diseases of the musculoskeletal and cardiovascular system.

It is why any significant deviation should not be ignored by both parents and the pediatrician. He needs to find the cause of the disorder and prescribe the appropriate therapy to keep the baby healthy.

There are certain factors that can be influenced by parents:

Factors contributing to child growth

  • Breast-feeding. Up to six months, the baby should be fed with mother's milk and then given complementary food. Mothers need to eat correctly and in a balanced way to ensure that their child receives the necessary vitamins and trace elements with milk.
  • Outdoor walks.
  • Sleep well. The baby should wake up rested and awake.

Factors that slow down the process

  • Bad ecology.
  • Feeding: even the best mixtures cannot replace breast milk.
  • Inadequate infant care: infant malnutrition, mother's smoking, lack of observation by a paediatrician.

Gromova S.M, Pediatric neurologist, doctor of the highest category, Department of Pediatrics, PSPBGMU named after Academician Pavlov, St. Petersburg

If the baby is growing intensively, it may be due to the fact that both parents are high. If it's active, relaxed, and has a good appetite, don't worry, you need to observe this indicator in the dynamics.

For comparing all the main parameters of your baby's growing up, we suggest you study the table of weight and circumference of the baby's head by months to a year.


Age, monthsGirlsBoys
Weight, kgHead circumference, seeHead circumference/strong>Weight, kgHead circle, see
77.7 42.88.344.0

Parental Reviews

Irina, 26, Cheboksary

My baby was born prematurely with a length of 46 cm and a weight of 2.5 kg. I was afraid that it would be bad for my daughter to gain height and weight by months.

I feed her breasts, and we have already caught up with her peers! Now we're six months old, and we've grown to 68 cm, and our weight has increased to 8.5 kg.

Alena, 31, Moscow

My second son was born on time with a normal body length of 50 cm. Now the baby is 2 months old, he grew by 12 cm.

I was glad and proud that my son is growing so fast, but after reading some articles on the Internet on the subject, I was wary.

As a pediatrician's appointment, she asked this question, and the doctor calmed me down, saying that the process was going well and that we would continue to observe it.

Olga, 28, St. Petersburg

Son will soon be six months old. It is worried about its low growth and low weight: the height and weight of the child in 5 months is only 63 cm and 7 kg.

The baby is on artificial feeding almost immediately after birth. Our family's husband is tall, 6'4″, I've got a 6″. It's probably too early to panic, but I can't help thinking about it!


First year of life, the infant should grow by an average of 25 cm. There are many factors that both contribute to growth and inhibit it.

Partners need to make every effort to get back to normal in all respects. But also remember that there are factors beyond their control. Stable growth of the baby is the best proof of the baby's health.

In this video, Dr. Komarowski will tell you whether the child's weight and height should be in accordance with the norms.

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WHO norms in tables

Norms of growth and weight of a child up to one year

But how do you know if the baby's okay? Doctors recommend important indicators such as the child's weight and height by month.

Compliance with the standards proposed by the WHO based on research, clinicians determine the degree of informality of the baby and the quality of its further development.

Where are the standards coming from?

World Health Organization or WHO conducted a series of studies on the development of babies under one year of age and a parallel analysis of the height and weight of children aged 1.5 to 6 years between 1997 and 2003. The focus of the global organization was not only on the indicators, but also on their ratio and monthly increments.

Why did you need such a global study? The latest data on the physical development of children were recorded back in the 1970s. of the 20th century. Since then, not only has the rhythm and lifestyle of babies changed, but also the way they eat.

If most babies were artificially fed during the Soviet period, with the improvement of working conditions for breastfeeding women and the opportunity to get paid leave after childbirth for 1.5 years, more babies are now breastfeeding, which is reflected in the increase in weight and body length.

Data collection was carried out in different countries and ethnic groups: European countries, USA, India, Brazil, Oman, etc. The study has shown that each nation has its own parameters, so it is not possible to derive an average length and weight for European and Indian children, for example.

What do the values depend on?

Momas who have ever had a monthly check-up with babies at the clinic know that the nurse not only measures and records the indicators, but also pays attention to the associated development factors:

  • transmitted viral and infectious diseases;
  • presence of dehydration;
  • which teeth emerge;
  • presence of appetite;
  • Education conditions.

They have a temporary effect on physical development, which can be adjusted in the future.

At the same time, there are other factors that Mommy or Physicians cannot or can hardly influence:

  • the sex of the child;
  • the peculiarities of genetics (if the father and mother are tall, the baby will also be tall);
  • the degree of fidelity, as well as the baseline height and weight at birth;
  • Nutrition (natural or artificial);
  • the presence of congenital diseases;
  • mobility;
  • environmental situation;
  • the nature of the course of pregnancy (whether the mother smoked, consumed alcohol, etc.)e.);
  • the amount of somatotropic hormone produced responsible for the growth of tubular bones (since most of the hormone is secreted at night, sleep disturbances in the child may cause a slowdown in growth).

Providing good care, regular breastfeeding, sufficient sleep, physical activity and walks in the fresh air accelerate the growth of children. In turn, insufficient care, poor environmental conditions are not the best way to affect the physical development.

To check whether your baby is developing normally, do not necessarily rush to the clinic. Parents can take measurements on their own, based on generally accepted norms of development and calculation formulas.

Child growth by month

Child growth rates depend primarily on the sex of the child, so WHO has created separate tables with average figures for girls and boys. Depending on the age of the baby, the ratio of body length to body weight, as well as the increase, will also differ.

First year

The table shows the approximate growth rate of babies at birth and up to one year, as well as how many centimetres a child will grow in a month.

Children up to one year of age are characterized by a special change in indicators, and each month of life in this period is significant. But before you take measurements and countdown, make sure that your baby meets the requirements for a newborn baby:

  • The birth took place at week 38-40 of pregnancy.
  • The height is at least 45 cm at weight from 2.5 kg.
  • The circumference of the head is from 34 to 36 cm.
  • The body parts are proportional.
  • The skin is smooth, gentle.
  • Hair length from 1 cm
  • Definitive rhythmic pulse.
  • Developed sucking reflex (you can read about unconditional reflexes in my article).

If a child is born prematurely, there are separate measures of height and weight depending on the week of pregnancy. Here is a table of the height and weight of a prematurely born child:

The height and weight of a prematurely born child:

  • Average monthly increase of a crumb over a month is 3 cm
  • The total height and weight of a prematurely born child should be at least 25 cm. Thus, a normal figure for a one-year-old baby is between 74 and 76 cm.
  • The children grow up more intensively in the first months after birth, after which the process slows down. Thus, in the first 3 months of the month the increase will be 3.5 cm monthly, from 3 to half a year – 3-2.5 cm, from 7 to 9 – about 1.5 cm, from 9 to a year – 1 cm
  • Important not only the total increase in height, but also its ratio with the weight and proportion of body parts.

For health professionals, the normal development of a crumb is not so much its growth as the circumference of the head. If the head is large and disproportionate to the torso, doctors may suspect hydrocephaly, the accumulation of fluid in the brain.

From 2 to 17 years of age

When a baby turns one year old, parents usually pay little attention to the extent to which their growth is within normal range. However, before puberty begins, it is no less important than in the first months of life.

After the year, the growth of children is expected to slow down. Up to 2 years, the baby grows by an average of 9-12 cm depending on gender and other factors. Up to 5 years its growth will increase only by 20-22 cm

K 10 years the average growth of a boy is 138-139 cm. From 11 to 17 years of age, during puberty, the growth of girls slows down, while for boys it increases after 12 to 13 years. By the age of 17, the average figure for a girl will be 155-160 cm, for a boy – 166-171 cm, see

How can you tell how toddler's height be determined?

To determine how toddler's height is up to a year, you'll need a centimetre of tape or a meter of ruler:

  1. Place the baby on the crib so that the baby's neck rests on a hard surface.
  2. Pull out your legs and place your feet at an angle of 90 degrees.
  3. Mark the place where the heels end.
  4. Lift the child up and measure the distance from the marker to the hard surface.

If the child can already stand, place him/her near the wall with the heels touching the hard surface to measure growth. Then take a solid ruler and apply it to the child's head so that it forms a right angle with the wall. At the point of contact, make a mark and measure the distance from the floor to the mark.

Measuring the child's height, be sure to pay attention to the child's weight.

The weight of the child by month

WHO strongly recommends that parents pay attention not only to the height and proportionality of body parts, but also to weight gain. Many parents believe that the more the baby weighs under a year, the better. But that statement is fundamentally wrong. Unhealthy obesity can occur in both adolescents and infants, especially those who are artificially fed.

To the year

For children up to one year the weight norm is determined by months, and it should be taken into account that children who are artificially fed gain weight much faster:

  • 1 month. During this time, the average child gains about 0.6 kg. In order to maintain normal development rates, it is ideal if the mommy will feed her baby every 3 hours. The amount of mixture consumed varies from 80 to 120 ml per feed.
  • 2 month. During this period, the increase will be about 0.7-0.8 kg. The intervals between feedings can be extended up to 3.5 hours. If you decide to wean your baby from feeding at night, keep in mind that his weight will begin to fall.
  • 3 month. An increase of 0.8 kg is maintained. The intervals between meals are maintained, but it is worth noting that up to 3 months of baby worry intestinal colic, so the appetite may decrease.
  • 4 month. The child is gaining an average of 0.75 kg and will continue to decline.
  • 5 month. By the end of the fifth month, the baby weighs 0.7 kg more.
  • 6 month. At six months, Tiny adds 0.65 kg. During this period, the complementary feeding in the form of vegetable puree begins to be introduced, which can be replaced by a single feed.
  • 7 month. Body weight increases by 0.6 kg. At seven months of age, babies can be given gluten-free porridge in the morning.
  • 8 months. The mass set is about 0.55 kg. A variety of vegetables, lean meat, porridge, egg yolk, etc. are added to the baby's menu.
  • 9 months. The increase in weight is half a kilogram. In the menu there appear mashed potatoes from several components, sour milk products.
  • 10 months. The baby weighs 0.4 kg more than last month. He's already good with fresh fruit. Creamy or vegetable oil can be added to the porridge.
  • 11 months. The weight increases by 0.4 kg. In the menu you can enter low-fat fish.
  • 12 months. The weight gain is 0.35-0.4 kg.

The following table will help you determine if your baby is developing normally:

You can calculate the optimal weight of your baby by the formula:

  • For the first half of the year. 800 times the number of months for the calculation period and add the weight of the crumb at birth.
  • By the second half of the year. M+800×6+400x(N-6), where M is the birth weight, N is the number of months.

After the year

In the future, girls and boys will not only have to pay attention to WHO-prescribed indicators, but also to the body mass index, which shows whether the mass is insufficient, normal, or excessive. To determine the mass index, you need to divide the body weight by height.

For boys and girls, the range of acceptable body weights may vary, but the average is as follows:

Bear in mind that for girls, body weight during puberty is a significant indicator. You have to watch the food carefully, not to lie on the sweet and flour. Protein food is shown to boys because from the age of 12-13 years there is a sharp increase in growth and muscle mass gain.

When should we sound the alarm?

Based on the indicators offered by the WHO, it should be borne in mind that they are averaged and slight fluctuations in one direction or another are acceptable. Parents need to sound the alarm if the weighting is significantly lower or higher.

In case of low values, it is recommended to review the diet and daily activity. For example, if a baby is under 5 years of age with a stable weight gain, and by the age of 6 heavier, the changes may be related to the preparation for school and stressful condition, violation of the usual daily routine.

For babies up to a year dangerous phenomenon can be vomiting, leading to dehydration. The problem may arise in connection with improperly selected nutrition, gastrointestinal diseases, nervous system diseases. In this case, it is necessary to see a doctor.

A boy's adolescence is usually marked by severe thinness associated with intensive growth. Girls, on the other hand, should eat more plant foods, as they are more likely to become obese during hormonal maturation.

The child's weight rejection at any age should be a signal to parents that it's time to sound the alarm and seek help from doctors if you can't help your child on your own.

If the article was useful to you, leave a link to it on social networks. See you soon!


Calculator of the norm of the child's weight and height from birth to adulthood

Norms of the child's height and weight up to one year

The calculator estimates the weight and height of the child according to his or her age to the nearest day. In contrast to the simplified tables, this calculator provides a comprehensive estimate of weight in strict accordance with the height and age of the child.

Value ranges, methodologies, and recommendations are based on methodological materials developed by the World Health Organization (WHO), which has conducted an extensive study of the development of healthy children of different nationalities and geographical areas.

Please remember that our calculator generates results based solely on the data you have provided. If you have taken measurements with a large error, the result will be inaccurate. Especially when it comes to measuring height (or body length).

If our calculator shows you a problem, don't panic: measure growth again, and let the measurements be made by two different people one at a time and independently of the other.

Rose or body length

Toddlers under two years of age have a tendency to measure body length in the lying position, and from two years of age the height is measured in the standing position, respectively.

The difference between height and body length can be up to 1 cm, which can affect the results of the assessment.

Therefore, if you specify the height for a child under 2 years old instead of the body length (or vice versa), the value is automatically converted to what is necessary for the correct calculation.

What is the height (body length)

Rost is the most important indicator that should be monitored monthly (see growth centennial tables). Getting “stunted” and “very stunted” scores may be a consequence of preterm birth, illness, and stunting.

High growth is rarely a problem, but “extremely high” scores may indicate the presence of endocrine disorder: such a suspicion should arise if a very tall child has both parents' normal mean height.

After, there is a list of possible growth estimates:

Very stunted. It can also lead to overweight. A specialist should be involved to identify and correct the cause of the delay. Low-growth stunting. It can also lead to overweight. It's necessary to consult a specialist. Below average Low child, within normal range. The average growth of most healthy children. Above-average tall child, normal height. HighThis high height is not common, but it does not indicate the presence of any problems, so it is considered the norm. Usually this growth is hereditary. Very high Excessive growth in a child is usually hereditary and is not a problem in itself. However, in some cases, this increase may be a sign of endocrine disease. Therefore, exclude the possibility of endocrine disorder by consulting a specialist. Growth is not age-appropriateYou may have made a mistake in indicating a child's height or age.
If the child's height is really the same as you have indicated, there is a significant deviation from the norm that deserves special attention from an experienced professional.

Ratio of height to weight gives the most meaningful idea of the harmony of the child's development, it is expressed in the form of a number and is called the Body Mass Index, or BMI for short. This value is used to objectively determine weight problems, if any. If not, they make sure that the BMI is normal.

Please note that normal BMI values for children are fundamentally different from those for adults and very much dependent on the age of the child (see BMI centennial tables). Naturally, our calculator evaluates BMI in strict accordance with the age of the child. Severe exhaustion. Correction of nutrition and treatment according to doctor's prescription is necessary. Deficiency of body weight (insufficient weight) Deficiency of body weight. Insufficient weight for the specified height. It is recommended to correct the power supply according to the doctor's prescription. Reduced weightWeight is within normal range. The child is less well-fed than most peers. Ideal weight/height ratio. Overweight (risk of overweight) The child's weight is normal, but there is a risk of overweight.

Excess weightIt is recommended to correct for nutrition by prescribing a doctor. ObesityNeeding correction and prescription treatment are necessary. Obesity: It is necessary to correct the power supply according to the doctor's prescription. UnmeasurableImprobably, you are mistaken about your child's height, weight, or age.
If all the data are correct, there is a significant deviation from the norm, which requires special attention from an experienced physician.

What is the weight

Easy estimation of weight (based on age) usually gives only a superficial idea of the nature of the child's development. However, obtaining a “Low weight” or “Extremely low weight” rating is a good reason to consult a specialist (see weight central tables). A complete list of possible weight estimates is given below:

Strong underweight, extremely low weightThe child is likely to be exhausted. Consult a specialist for advice. Unweight, low weight. The baby's probably exhausted. Consult a specialist for advice. Less than averageWeight is below average, but within the norm for the age indicated. The majority of healthy children are of medium weight. Above averageIn this case, compliance with the norm should be assessed by body mass index (BMI). Very largeIn this case, weights are estimated by body mass index (BMI). Weight is not appropriate for ageYou may have made a mistake when giving your child's weight or age.
If all data are correct, your child may have problems with development, weight, or height. See growth estimates and BMI for more details. And be sure to consult an experienced professional.

Middleweight Chart of Children Under Three


Rates of growth and weight of children from birth to two years of age by month (WHO)

Rates of growth and weight of a child under one year of age

The following tables of the norms of growth and weight of children from birth to two years of age, as well as tables of the norms of weight gain are prepared on the basis of the latest data of the WHO (2006).

How to use the tables

The tables show the limit values of the norm of the following parameters, which characterize the correctness of the physical development of the baby – height, weight, mass index, head circumference, weight gain and growth gain.

If the parameter is less than the minimum value from the table or more than the maximum value, the child needs a qualified consultation with a doctor.

If the parameter value is greater than or equal to the minimum value from the table and less than or equal to the maximum value, the child develops within the norm.

Example, the weight of 3200 g (3.2 kg) for a newborn girl (0 months) is the norm. But if the weight is less than 2800 grams or more than 3,700 grams, the child will get close attention of neonatologists.

For children with increased birth weight, they will make an ultrasound of the brain, as well as take a number of tests, in particular, for diabetes mellitus.

If your child's weight or height is too low or too high and falls outside the “normal” range, be sure to check your body mass index.

Body Mass Index is a very important parameter to assess whether the body mass is insufficient, normal or excessive.

Body Mass Index is calculated by the formula I= m/h2 (body mass divided by height in a square) , where m is body mass in kilograms, h is height in meters. The body mass index is measured in kg/m².

The data on normal values of weight gain are given up to one year – monthly, after one year – two months. That is, up to a year is controlled by how much the baby put on weight in a month. After a year – how much the baby added weight in two months.

The data on normal values of growth growth are given at intervals of two months.

Women's Norms

Weight, kg Height, see Body Mass Index Head circumference, seeYear:month








































178.9 11.476.882.514.517.344.747.4
189.1 11.


199.2 11.878.884.714.417.14547.8
209.4 12.179.785.714.31745.248


229.8 12.581.587.714.216.945.548.3
2310.0 12.


2410.2 13

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