A table of height and weight, which shows the dynamics of change in children under the age of 1 year, allows you to evaluate changes in their development that have occurred over this period of time. The numbers indicated in this table reflect several types of indicators (from low to too high) and show options for the norm and deviations from it in both directions.

Age	Short		Below the average		Average		Above average		High		Too tall
	kg	cm	kg	cm	kg	cm	kg	cm	kg	cm	kg	cm
Newborn period	2,4	45,4	2,8	47,3	3,2	49,1	3,7	51,0	4,2	52,9	4,8	54,7
1 month	3,2	49,8	3,6	51,7	4,2	53,7	4,8	56,6	5,5	57,6	6,2	59,5
2 months	3,9	53,0	4,5	55,0	5,1	27,1	5,8	59,1	6,6	61,1	7,5	63,2
3 months	4,5	55,6	5,2	57,7	5,8	59,8	6,6	61,9	7,5	64,0	8,5	66,1
4 months	5,0	57,8	5,7	59,9	6,4	62,1	7,3	64,3	8,2	66,4	10,0	68,6
5 months	5,4	59,6	6,1	61,8	6,9	64,0	7,8	66,2	8,8	68,5	10,6	70,7
6 months	5,7	61,2	6,5	63,5	7,3	65,7	8,2	68,0	9,3	70,3	10,6	72,5
7 months	6,0	62,7	6,8	65,0	7,6	67,3	8,6	69,6	9,8	71,9	11,1	74,2
8 months	6,3	64,0	7,0	66,4	7,9	68,7	9,0	71,1	10,2	73,5	11,6	75,8
9 months	6,5	65,3	7,3	67,7	8,2	70,1	9,3	72,6	10,5	75,0	12,0	77,4
10 months	6,7	66,5	7,5	69,0	8,5	71,5	9,6	73,9	10,9	76,4	12,4	78,9
11 months	6,9	67,7	7,7	70,3	8,7	72,8	9,9	75,3	11,2	77,8	12,8	80,3
12 months	7,0	68,9	7,9	71,4	8,9	74,0	10,1	76,6	11,5	79,2	13,1	81,7

WHO norms of weight and height for boys under one year (Table)

Age	Short		Below the average		Average		Above average		High		Too tall
	kg	cm	kg	cm	kg	cm	kg	cm	kg	cm	kg	cm
Newborn period	2,5	46,1	2,9	48,0	3,3	49,9	3,9	51,8	4,4	53,7	5,0	55,6
1 month	3,4	50,8	3,9	52,8	4,5	54,7	5,1	56,7	5,8	58,6	6,6	60,6
2 months	4,3	54,4	4,9	56,4	5,6	58,4	6,3	60,4	7,1	62,4	8,0	64,4
3 months	5,0	57,3	5,7	59,4	6,4	61,4	7,2	63,5	8,0	65,5	9,0	67,6
4 months	5,6	59,7	6,2	61,8	7,0	63,9	7,8	66,0	8,7	68,0	9,7	70,1
5 months	6,0	61,7	6,7	63,8	7,5	65,9	8,4	68,0	9,3	70,1	10,4	72,2
6 months	6,4	63,3	7,1	65,5	7,9	67,6	8,8	69,8	9,8	71,9	10,9	74,0
7 months	6,7	64,8	7,4	67,0	8,3	69,2	9,2	71,3	10,3	73,5	11,4	75,7
8 months	6,9	66,2	7,7	68,4	8,6	70,6	9,6	72,8	10,7	75,0	11,9	77,2
9 months	7,1	67,7	8,0	69,7	8,9	72,0	9,9	74,2	11,0	76,5	12,3	78,7
10 months	7,4	68,7	8,2	71,0	9,2	73,3	10,2	75,6	11,4	77,9	12,7	80,1
11 months	7,6	69,9	8,4	72,2	9,4	74,5	10,5	76,9	11,7	79,2	13,0	81,5
12 months	7,7	71,0	8,6	73,4	9,6	75,7	10,8	78,1	12,0	80,5	13,3	82,9

Physical and mental development of the child by month

The height and weight chart for children up to one year old allows you to track the active phases of your baby's growth. The first year is a special time when a child quickly develops month after month and acquires new skills and abilities. Each baby is unique and its development proceeds at a certain pace; these changes cannot be tied to a specific plan and period of time.

However, every parent can monitor the development of their child in order to be able to promptly help their child in mastering those skills that are not yet given to him, but are already required by age.

1 month

During the period from birth to 1 month, the baby grows by 3 cm and gains from 500 grams. up to 1 kg in weight.

Child development:

• the baby begins to hold a smile on his face for several seconds, turning it towards the adult who cares about him. He begins to learn to hold his head, raising it for a short time 1-2 cm from the surface in a lying position;
• very bright toys are able to capture the attention of the baby, he looks at them for a while (even if they move);
• a sudden loud sound can cause a response in the baby in the form of fear, flinching or crying;
• Mom or dad talking to the baby causes him to actively respond in the form of moving his arms, legs and smiling;
• in response to the parents’ kind words, the child tries to “coo.”

2 months

Over the current month, the baby grows by 3 cm and gains about 1 kg in weight.

Features of the child's behavior:

• the baby begins to sleep a little less (about a quarter of an hour he is able to look around, the baby sleeps for the remaining time of the hour);
• A two-month-old baby may well confuse night and day, and entertain parents throughout the dark time of the day, and rest during the day. In this case, you need to try to carefully transfer him to a traditional daily routine;
• The little one tries to turn from side to back and back, and also slightly hold his head in a position lying on his tummy;
• the baby grasps the finger very tightly, which the mother can place in his open palm;
• The fists on the hands are no longer clenched so tightly, but the legs are still in a state of slight tone. Now is the time to take your child through a massage course with a specialist;
• The baby actively speaks his own language and recognizes the speech of his family addressed to him.

3 months

According to the data described in the table of height and weight of children, up to one year the baby grows very quickly. The 3rd month is no exception, the child gains 750-800 grams. and grows by 3-4 cm.

Baby's achievements:

• the baby is able to remain awake for up to 1-2 hours in a row, lying in a crib or preferring to be carried in his arms;
• if the mother holds the baby vertically in her arms, he can quite easily hold his head on his own;
• If you place the child on a flat surface with his tummy down, he raises his head, resting on his forearms. This should be done on a regular basis so that the baby can train the muscles of the shoulder girdle;
• taking the child under the arms, you can see how he rests his legs on a hard surface;
• gradually the child begins to independently roll over from back to side;
• toys that are in his field of vision and loud sounds invariably cause great interest or even fear;
• the baby begins to react differently to different situations: laugh, cry, be offended;
• in addition to vowels, consonant sounds appear in the child’s babble, which he begins to recite when he is in a good mood;
• the baby has a desire to grab a bright toy with his hand;
• The baby begins to suck his fingers and toes and touch his face.

4 months

By 4 months, the child grows another 3 cm and gains 600-800 grams.

Features of development:

• each baby by this age adapts to the same regime (if the parents supported him for 4 months);
• night sleep becomes longer, the periods between feedings increase;
• the baby is able to roll over from back to stomach;
• attempts appear in a supine position to raise your arms and forearms: all this leads to attempts to sit down;
• the baby purposefully reaches out to toys that interest him, can hold them, pull them and throw them;
• while eating, the child can hold the breast or bottle;
• if you show the baby his mirror image, he will laugh merrily and be interested in looking at it;
• Artificial babies at this age begin to be introduced to complementary foods made from vegetables.

5 months

Over the past month, the child grows by 2-4 cm and gains about 700 grams in weight.

The baby can do the following:

• actively roll over from back to tummy and back;
• sit with support under your back. Its back remains in a semicircular state;
• stand with support on straight legs;
• take the toy with both hands and hold it there a little;
• distinguish mother’s voice and face from others, gravitate towards her;
• react to strict or affectionate intonations and reflect this with your emotions;
• sing some sounds while in a good mood.

6 months

The baby's first six months, according to the height and weight table, are marked by the gain of another 600 grams. and growing by 2-3 cm, which is up to half of all parameters that children achieve by the age of one year.

Baby's achievements:

• the baby sits perfectly on his own if his mother drops him off (he is not yet able to take this position on his own);
• some are able to stand on all fours, others crawl well;
• By pulling the baby's arms, you can force him to rise to his feet. If you hold him under his chest, he can walk a step or two on a hard surface;
• the baby consciously holds the toy and moves it from palm to palm;
• babbling is very active, but without semantic load (although the syllables “ma” and “pa” may appear, they are not addressed personally to the parents);
• the baby will look around if you call him by name and may pay attention to the toy that his mother mentions;
• the child begins to be afraid of strangers or, conversely, to look at them with interest;
• the first teeth begin to erupt on the lower jaw;
• Children who were breastfed begin to be fed vegetable purees or cereals;
• a child is able to eat from a spoon if his mother feeds him.

7 months

During this month, the child grows 2 cm and gains 500 grams of weight.

According to the table of height and weight of children under one year old, at 7 months the baby can already collect and throw toys

The child gets the following:

• sit and crawl independently;
• stand with support and walk a little;
• actively study toys and play with them for a long time, throwing, opening and picking up;
• drink from the mug that mom is holding;
• listen carefully to adults and look for the subject in question with your eyes;
• point to some parts of your own body (nose, eyes);
• incisors appear below (if they were not there before) and below.

8 months

By 8 months, the baby is already gaining another 400-700 grams. and grows by 1.5-2 cm.

Achievements of the toddler at this age:

• crawling around the house;
• lifting with support on legs;
• the baby can take several steps if he is supported under the chest or by the arms;
• the child actively plays: rolls a ball, sits a doll, performs other actions with toys;
• babbling becomes clearer and directed towards specific people. Conscious sounds “ma-ma”, “ba-ba”, “pa-pa” appear;
• the baby understands when mom leaves the room and gets very upset about it;
• strangers scare the little one, as do sharp sounds;
• the baby can give his palm or make simple movements in response to a request (play “palm”);
• The baby is able to independently hold and bite bread, cookies or crackers.

9 months

Children under one year old are actively changing; the height and weight table shows that by 9 months, the baby gains 500 grams. and grows by 1-2cm.

Features of development:

• the baby is almost ready to walk, he actively strengthens his muscles by crawling and lifting from support;
• some children already stand up on their own and try to take one step or another;
• the baby is able to repeat the actions of other people, especially with toys: take out, show, give, ride;
• The little one dances merrily to the music;
• The eruption of the second incisors, upper and lower, begins.

10 months

By this time, the baby begins to slow down and gains only 1 cm in height and 500 grams. in weight.

The baby can:

• move confidently: sit down, walk, holding on to something, go down and up the steps (with support);
• the baby is able to leaf through books and pick up toys with two fingers;
• the baby can open and close a box, carry a car, build towers from cubes;
• the first simple words or the first syllables from the names of various objects appear;
• The child actively repeats the actions of adults and points to the named parts of the body.

11 months

Children under one year old, approaching 11 months, gain about 300-450 grams. and grow by 1-2 cm, according to the height and weight table - this fits into the accepted norms.

Achievements of the toddler:

• active and constant movement: walking by the hand, squats and bending;
• dexterous handling of toys: collecting pyramids and cubes, studying bright books with musical sounds;
• the child shows body parts of dolls and soft toys;
• the baby understands reproach and praise from the mother;
• simplified names of familiar objects and the word “give” appear in speech;
• there is a desire to eat and dress yourself.

12 months

By the age of 1 year the baby gains another 350 grams. (about 10 kg from birth) and grows by 1-2 cm (plus 20-25 cm).

The baby can:

• walk, sit down and rise from squatting;
• pronounce about 10 words and understand simple instructions, carrying them out (“give”, “bring”, “can”);
• knows the names of relatives and friends;
• cares for dolls with interest, dressing them and putting them to bed;
• tries to chew solid food, learns to drink and eat on his own. Begins to be picky about food.

Key points in the development of a child in the first year of life (Table)

Up to a year, children change dramatically; this process can be assessed not only in the table of height and weight, but also by the main points of their development indicated below.

Age (in months)	Static and motor skills	Speech skills	General
1	He listens to the voices and holds his head for a few seconds. Shudder from sharp sounds	Single sounds "gu"	Smiling
2	Holds his head a little and turns it to the sides	He makes a lot of noise	Looks at an object that is moving. Watches mom a lot
3	Holds your head for a long time. May pull his hand towards the toy	It hums very often and for a long time	Actively reacts to bright objects with sounds
4	Lying on his stomach, he rises with support on his elbows. Starts to roll over	New sounds appear in the hum	Starts to laugh, perks up when unfamiliar faces appear
5	Continues to master coups. Can stand if held under the arms	Booms often and for a long time with different intonations	Distinguishes between friends and strangers. Able to hold a bottle and eat porridge from a spoon
6	Can sit independently. Learns to crawl	Starts to babble	Distinguishes between mom, dad and strangers. Reacts to their appearance
7	Crawling and sitting without support	Babbles and understands other people	Rearranges toys in hands and in places
8	Lies down and sits up independently. Walks with support on pieces of furniture	Babbles well	Plays with toys. May wave goodbye (if adults taught him this)
9	If you hold it, it walks, can move from point to point in the room	Babbles great	Tries to dance when music is playing. Able to fulfill simple requests with toys (“give”, “show”)
10	It does not stand for long without support and support. Excellent crawling throughout all rooms of the apartment	Words appear	Repeats the example of adults: fold the pyramid, cubes, remove and close
11	Stands, begins to walk with support from the arms	In speech, understandable words are distinguished	Understands restrictions and permissions. Fulfills simple requests
12	Walks on his own without any support	Speaks 5 to 10 words	Recognizes relatives and is able to perform more complex requests and tasks

The development of each child is a multifaceted and complex process that depends on many factors. You should not blindly follow generally accepted criteria, but you need to focus on them so as not to miss time for the baby’s development.

Video about the development of a child up to one year old

Norms for weight gain and growth of a child up to one year old. Table:

Dr. Komarovsky will tell you what weight and height a child under one year should have:

The percentage of overweight children everywhere is increasing at an alarming rate - on average, one in three teenagers or children is 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 - this is the reality for many families.

Protecting children from excess weight means establishing a proper diet and exercise routine in the family, as well as healthy rest together. We must include our children in a healthy lifestyle through 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 - to assess excess weight in adults and children, which is based on the ratio of height and weight, and subsequent calculation of the proportion of fat in the human body. The method for calculating BMI was developed by Adolphe Quetelet and for children it provides a special scheme. First you need to calculate the child’s BMI using the general formula:

Body mass index (BMI) calculator using Quetelet's formula

Because children and adolescents are characterized by rapid growth and development, their BMI can change significantly over a short period of time. Therefore, the usual BMI assessment common in adults is not suitable for them. To accurately and correctly estimate a child's body mass index, scientists studied the weight-to-height ratio of many thousands of children. And when you need to determine whether your child's BMI is normal or deviates from it, 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 adjustments need to be adjusted. This compares your child's body mass index 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 we can conclude 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 in the range between 85 and 95;
• Obesity: BMI falls in the range of 95 or higher.

For children younger than 2 years old, doctors use weight-for-height charts and a careful physical examination.

Table for assessing a child’s weight and height by BMI

However, BMI is not a perfect indicator of body fat and can be misleading in some cases. For example, a teenager with developed muscles can have a high BMI without being overweight (muscle is added to body weight, not excess weight). In addition, BMI can be difficult to estimate correctly during puberty, when young people go through rapid growth stages. In any case, it is important to remember that BMI is generally a good indicator, but it is not a direct measurement of the amount of fat in the body.

Bioimpedance analysis allows you to determine the exact percentage of adipose tissue. Using 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 is bone and fat.

If you are concerned that your child may be overweight or underweight, arrange an appointment with your child's healthcare provider to evaluate their diet and physical activity level and suggest positive changes. Your doctor may also recommend preventing certain diseases associated with being underweight or obese.

Norms of weight and height of a child by age

Table of height and weight of a child up to one 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.	54.5 cm.	56.5 cm.	57.3 cm.		3.3 kg.	3.6kg.	4.3kg.	5.1kg.	5.4kg.
2 month	52.6 cm.	53.8 cm.	57.3 cm.	59.4 cm.	60.9 cm.		3.9 kg.	4.2kg.	5.1kg.	6.0kg.	6.4kg.
3 months	55.3 cm.	56.5 cm.	60.0 cm.	62.0 cm.	63.8 cm.		4.5kg.	4.9kg.	5.8kg.	7.0kg.	7.3kg.
4 months	57.5 cm.	58.7 cm.	62.0 cm.	64.5 cm.	66.3 cm.		5.1kg.	5.5kg.	6.5kg.	7.6kg.	8.1kg.
5 months	59.9 cm.	61.1 cm.	64.3 cm.	67cm.	68.9 cm.		5.6kg.	6.1kg.	7.1kg.	8.3kg.	8.8kg.
6 months	61.7 cm.	63cm.	66.1 cm.	69cm.	71.2 cm.		6.1kg.	6.6kg.	7.6kg.	9.0kg.	9.4kg.
7 months	63.8 cm.	65.1 cm.	68cm.	71.1 cm.	73.5 cm.		6.6kg.	7.1kg.	8.2kg.	9.5kg.	9.9kg.
8 months	65.5 cm.	66.8 cm.	70cm.	73.1 cm.	75.3 cm.		7.1kg.	7.5kg.	8.6kg.	10kg.	10.5kg.
9 months	67.3 cm.	68.2 cm.	71.3 cm.	75.1 cm.	78.8 cm.		7.5kg.	7.9kg.	9.1kg.	10.5kg.	11kg.
10 months	68.8 cm.	69.1 cm.	73cm.	76.9 cm.	78.8 cm.		7.9kg.	8.3kg.	9.5kg.	10.9kg.	11.4kg.
11 months	70.1 cm.	71.3 cm.	74.3 cm.	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 child height and weight by year

	Height in cm						Weight in kg.
	Very low	Short	Average	High	Very tall		Very low	Short	Average	High	Very tall
1 year	71.2 cm.	72.3 cm.	75.5 cm.	79.7 cm.	81.7 cm.		8.5kg.	8.9kg.	10.0kg.	11.6kg.	12.1kg.
2 years	81.3 cm.	83cm.	86.8 cm.	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	98.9 cm.	101,5	108.3 cm.	114.5 cm.	117cm.		14.8kg.	15.7kg.	18.3kg.	21.7 kg.	23.4kg.
6 years	105cm.	107.7 cm.	115m	121.1 cm.	123.8 cm.		16.3kg.	17.5kg.	20.4kg.	24.7kg.	26.7kg.
7 years	111cm.	113.6 cm.	121.2 cm.	128cm.	130.6 cm.		18kg.	19.5kg.	22.9 kg.	28kg.	30.8kg.
8 years	116.3 cm.	119cm.	126.9 cm.	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.		21.9 kg.	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.		23.9 kg.	25.6kg.	31.4kg.	39.7kg.	44.7 kg.
11 years	131.3 cm.	134.5 cm.	143.2 cm.	152.9 cm.	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.	30.7 kg.	38.8kg.	50.6kg.	58.7 kg.
13 years	141.8 cm.	145.7 cm.	154.8 cm.	166cm.	170.7 cm.		30.9 kg.	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.	166.8 cm.	177.6 cm.	181.6 cm.		38.7kg.	43kg.	54.8kg.	70kg.	80.1kg.
	Very low	Short	Average	High	Very tall		Very low	Short	Average	High	Very tall

Preventing excess weight and obesity

The key to keeping children of all ages at a healthy weight is family lifestyle. This is what is “preached” in the family. Make physical activity and healthy eating a family hobby. To make it interesting for children too, let them help in planning and preparing healthy menus, and take them with you to grocery stores so that they learn how to choose healthy and proper foods.
Avoid falling into these common nutrition traps:

• Don't reward children for good behavior or try to deter them from bad behavior with sweets or treats. Reward or punishment should not include food; there are many other effective and correct ways of education.
• Don't support the "clean plate policy". Watch for signs that your baby is hungry. Even babies who turn away from the bottle or breast report that they are full. If children are full, don't force them to continue eating. Remind yourself that we should only eat when we are hungry.
• Don't talk about "bad foods" and don't completely exclude all sweets and favorite treats from the children's menu. Children are likely to rebel and eat large quantities of these unhealthy foods outside the home or when their parents are not looking.

conclusions

It is not easy to motivate a child to achieve results; he cannot be “put” on a diet. In turn, adolescence is difficult because there is a danger of self-rejection, isolation, depression, and anorexia. Once you find out if your child needs weight management, we would like to make some additional recommendations for children of all ages:

• From birth to 1 year: In addition to the well-known many health benefits, breastfeeding can also help prevent excessive weight gain. And although the exact mechanism has not yet been established, breastfed children more clearly sense their hunger and satiety, thus protecting themselves from overeating.
• From 1 year to 5 years: It is better to develop healthy habits from an early age. Help your child establish healthy eating habits by offering a variety of healthy foods. Encourage your child's natural tendency to be active and help him develop.
• From 6 to 12 years: Keep your child physically active every day. Let it be a sports section or outdoor games in the yard. Encourage activity at home - in everyday housework and in joint games and walks on weekends. Teach your child to choose useful and healthy foods, help him pack his own sandwiches for school.
• From 13 to 18 years old: Teens often gravitate toward fast food, but try to encourage them to eat healthier foods. For example, with baked chicken sandwiches, salads and smaller portions. Teach them how to prepare delicious healthy food and treats at home. Help them maintain physical activity every day.
• All ages: Reduce the amount of time your child spends watching TV, computers, and playing video games. Fight your child's habit of eating while looking at the TV or 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 fruits and vegetables at least five times a day, limit sugary drinks and never skip breakfast.

If you eat right, exercise frequently, and incorporate healthy habits into your family's daily routine, you are creating 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 for each of you.

But above all, let your children know that you love them no matter their weight, and your main desire is to help them be happy and healthy.

At a pediatrician's appointment, every baby under one year of age is weighed monthly and their height is measured. Why is it so important for doctors to know how a child grows and how much weight he gains? What do these parameters indicate, and what are the anthropometric norms for children of different ages?

Where did weight and height indicators for children come from and why are they needed?

A child’s anthropometric data is one of the main indicators of the physical development and health status of children. Significant deviations from normal height and weight values ​​in a child almost always indicate the development or presence of certain diseases. So, if a child under one year old, with sufficient nutrition, does not gain weight well, then this may be one of the symptoms of rickets, anemia, immunodeficiency conditions, diseases of the endocrine or central nervous systems.

Significant growth retardation may indicate a lack of somatotropin growth hormone in the body, and obvious excess weight with normal growth and proper nutrition may indicate disturbances in the functioning of the adrenal glands, thyroid gland, and even the development of a brain tumor.

In order to detect and begin to treat such dangerous diseases in time, doctors carefully monitor the anthropometric indicators of children from birth. The development standards were compiled by the World Health Organization based on many years of research. In addition to the average normative indicator for each age, the limits of the norms were also calculated. Weight and height above this limit are considered high, and below - low. It is these children that doctors begin to monitor especially closely.

WHO height and weight chart for girls under 1 year of age

According to the norms, a healthy full-term girl is born with a height of 49.2 cm and weighs 3,200 g. This is the average. The lower limit of the norm for a newborn is a height of 47.3 cm and a weight of 2,800 g, and the upper limit is located at values ​​of 51 cm and 3,700 g, respectively. Values ​​outside the lower and upper limits of the norm are marked as very low or too high. Doctors will observe such a newborn and, possibly, further examine her.

In the first month, the newborn should grow 4.5 cm and gain a kilogram. The lower limits of the norm for a one-month-old girl will be 51.7 (height in cm) // 3.600 (weight in grams), and the upper limits will be 55.6 // 4.800.

Normal indicators for a two-month-old baby: 57.1 cm and 5.100 g. The lower limit of the norm: 55//4.500, and the upper limit – 59.1//5.800.

By three months, girls grow to 59.8 cm and weigh 5,900 grams. Indicators less than 57.7 // 5.200 are considered low for a three-month baby, and indicators more than 61.9 // 6.600 are considered high.

Average height and weight for a four-month-old girl: 62.1 cm and 6,400 g. The lower limits of the norm are 59.9 // 5.700, the upper limits are 64.3 // 7.300.

By five months, girls should grow to 64 cm and weigh 6,900 g. Low indicators – parameters less than 61.8//6.100. Indicators 66.3 //7.800 are the upper limits of the norm for a five-month-old girl.

The age of 6 months is considered an important milestone for a child's development. A six-month-old girl should grow to 65.7 cm and weigh 7.300 g. The lower limit is 63.5//6.500, and the upper limit is 68//8.300.

The seven-month-old baby grows to 67.3 cm and weighs 7,600 grams. Indicators below 65 // 6.800 are considered low, and indicators exceeding 69.6 // 8.600 are considered high.

At eight months, the norms are: height - 68.83 cm, and weight - 8 kg. The lower limits of the norm: 66.4//7000, and the upper limits – 71.1//9000.

By nine months, the height should be 70.1 cm, and the baby should weigh 8,200 grams. Low indicators at this age are values ​​less than 67.7 // 7.300, and high indicators are more than 72.6 // 9.300.

According to the norms, a ten-month-old baby should be 71.5 cm tall and weigh 8,500 grams. The lower limits of the norm for ten months are 69//7.500, and the upper limits: 74//9.600.

By eleven months, a girl normally grows to 72.8 cm and weighs 8,700 grams. Indicators less than 70.3//7.700 are considered low. Indicators exceeding 75.3//9.900 will be high.

By the age of one year, girls should grow to 74 cm and weigh 9,000 grams. The lower limit of the norm is considered to be 71.4 //7.900, and the upper limit: 76.6 //10.100.

WHO height and weight chartfor boys up to 1 year

The norms for boys are different from the norms for girls, since boys are usually born slightly larger. Thus, a healthy full-term newborn boy is usually born with a weight of 3,300 grams and a height of 49.9 cm. These indicators are considered the norm. The lower limit of the norm for a newborn is a height of 48 cm and a weight of 2,900 g, and the upper limit is 51.75 cm and 3,900 g, respectively.

In the first month, the baby should grow 4.8 cm and gain 1200 grams. The lower limits of the norm for a one-month-old boy will be 52.8 (height in cm) // 3,900 (weight in grams), and the upper limits will be 56.7 // 5,100.

Normal indicators for a two-month-old toddler: 58.4 cm and 5.600 g. The lower limit of the norm: 56.4//4.900, and the upper limit – 60.4//6.300.

By three months, boys grow to 61.4 cm and weigh 6,400 grams. Low indicators will be parameters below 59.4 // 5.700, and high indicators will be indicators above 63.5 // 7.200.

Average height and weight for a four-month-old baby: 63.9 cm and 7000 g. The lower limits of the norm are 61.8 // 6.300, the upper limits are 66 // 7.800.

By the age of five months, the boy should grow to 65.9 cm and weigh 6,900 grams. Low indicators – parameters less than 63.8 // 6.100. Indicators 68 //7.800 are the upper limits of the norm for a five-month-old baby.

By six months, the baby should grow to 67.6 cm and weigh 7,900 grams. The lower limit is 65.5//7.100, and the upper limit is 69.8//8.900.

The seven-month-old boy grows to 69.2 cm and weighs 8,300 grams. Indicators less than 67 // 7.400 will be considered low, and indicators exceeding 71.3 // 9.300 will be considered high.

At eight months, the average for a boy is: height - 70.65 cm, and weight - 8,600 g. The lower limits of the norm: 68.45//7.700, and the upper limits –72.85//9.600.

By nine months, the baby should be 72 cm tall and weigh 8,900 grams. Low indicators will be less than 69.65 // 8.000, and high indicators will be more than 74.3 // 9.900.

A ten-month-old boy should normally be 73.3 cm tall and weigh 9,200 grams. The lower limits of the norm at this age are 71//8.200, and the upper limits: 76//10.200.

By eleven months, the baby normally grows to 74.5 cm and weighs 9,400 grams. Indicators less than 72.2//8.400 are considered low. Indicators exceeding 76.8//10.500 will be high.

According to standards, boys should grow to 75.8 cm per year and weigh 9,700 grams. The lower limit of the norm is considered to be 73.5 //8.700, and the upper limit: 78 //10.800.

Height and weight chart for girls from 1 to 10 years old

The growth of children begins to slow down as soon as the kids turn one, so for children from one to three years old, the norms are no longer determined monthly, but every three months. For children from 3 to 7 years old - once every six months, and for children aged from seven to ten years - the norms change once a year.

By one year and three months, a girl should normally grow to 77.5 cm and weigh 9,600 grams. The lower limits of the norm: 74.83 (height in centimeters) and 8,500 (weight in grams), the upper limits: 80.3 // 10,900.

The next reference point is defined for the age of one year and six months. Norm: 80.65//10.200. Lower limit: 77.7//9.100. Upper: 83.5//11.600.

At one year and nine months, the norms for girls are 83.65//10.900. Lower limit of normal: 80.6//9.600. Upper limit: 86.7//12.300.

By the age of two, girls normally grow to 86.4 cm and weigh 11,500 grams. The lower limit of the norm: 83.2//10.200. Upper limit: 89.6//13.000.

Average height and weight for babies aged 2 years 3 months: 88.3/12.100. Lower limit: 84.8//10.700. Upper limit: 91.7//13.700.

Girls at 2.5 years old should grow to 90.7 cm and weigh 12,700 grams. The lower limit of the norm: 86.9//11.200. Upper frames: 94.3 // weight 14.400.

At 2.9 years, the average values ​​are: 92.9 // 13.300. Lower limits: 89.3//11.700, upper limits: 96.6//weight 15.100.

Three-year-olds should be 95 cm tall and weigh 13,900 grams. Data below 91.3//12.200 are assessed as low, and figures above 98.8//15.800 are assessed as high.

At 3.5 years old, the standards for a girl are: 99//15,000. The lower line is 95//13.100, and the upper line is 103.1//17.200.

Average height and weight for a four-year-old girl: 102.6//16.100. The lower limits of the norm: 98.4//14.000, and the upper limits of height and weight: 107.1//18.500.

At 4.5 years old, the standards for a girl are: 106.2//17.200. Lower limits: 101.6//14.900, and upper limits: 110.7//19.900.

Average height and weight for a five-year-old girl: 109.4//18.200. The lower limits of the norm: 104.7 // 15.800, and the upper ones: 114.2 // 21.200.

At 5.5 years old, girls should grow to 112.2 cm and weigh 19,000 grams. Parameters less than 107.2 // 16.600 are considered low, and indicators more than 117.1 // 22.200 are considered high.

Standards for six-year-olds: 115.1//20.200. Lower limits: 110//17.500. Upper – 120.2//23.500.

By the age of 6.5 years, girls grow to 118 cm and weigh 21,200 grams. The lower limits at 6.5 years are 112.7 // 18.300, and the upper limits are 123.3 // weight 24.900.

Average height and weight for seven-year-old girls: 120.8 and 23,000. Lower limits: 115.3//21.300, upper limits: 126.3//26.300.

In children over seven years of age, anthropometric indicators are monitored once a year. The standards for eight-year-old girls are 126.6//25,000. The lower limit for eight-year-olds will be 120.8 and 21.400. The upper limit is 132.4//30,000.

Norms for nine-year-olds: 132.45//28.200. Lower limits: 132.5 and 27.900, upper limits – 138.6 // weight 34.000.

A ten-year-old girl should have an average height of 138.55 cm and a weight of 31,900 g. Data below 132.2//27.100 are assessed as low, and figures above 145//38.200 are assessed as high.

Height and weight chart for boys from 1 to 10 years old

Boys at 1.3 years old should reach the parameters 80//10.400. Lower normal value: 76.55 (height in centimeters) and 9.200 (weight in grams), upper limits: 82//11.500.

The next control point is one year and six months. The standard for one and six years is 82.3//10.900. From the border: 79.6//9.800. Up to: 85//12.200.

At 1.9 years old, the standards for boys are 85.2 // 11.500. From the border: 82.4//10.300. Until: 88//12.900.

By the age of two, toddlers normally reach 88//12,200. From the line: 84.4//10.800. Up to 90.5//13.600.

Standard for a 2.3 year old child: 89.6//12.700. From: 86.5//11.300, to: 92.8//14.300.

By the age of 2.5 years, the toddler should grow to 91.9 cm and weigh 13,300 grams. Lower limits for this age: 88.5//11.800. Upper frames: 95.4//15.000.

At the age of 2.9 years, the standards are 94.1/13.800. Lower limits 91//12.300, upper limits 97.6//15.600.

Boys' height at 3 years should be 96.1 cm, weight - 14,300 g. Scores less than 92.4//12.700 will be assessed as low, and scores exceeding 100//16.200 will be assessed as high.

At 3.5 years old, the norm for boys is: 99.9//15.300. From the border: 95.9//13.600, to: 103.8//17.400.

Average height and weight for a four-year-old boy: 103.3//16.300. From the border: 99.1//14.400, to: 107.5//18.600.

At 4.5 years old, the boy’s height reaches 107 cm, and his normal weight should be 17,300 g. The lower level of the norm: 102.25//15.200, and the upper one: 111.1//19.900.

Standards for boys aged 5: 110//18.300. From the bar at: 105.3//16.000 cm, to: 114.6 and 21.000.

By the age of 5.5 years, the standards for boys are 113//19.400. For 5.5 years, indicators less than 108.2//17,000 are considered low, and more than 117.7//22,200 are considered high.

Average height and weight for six year olds: 116/20,500. Bottom bar: 111//18.000. Upper: 120.9//23.500.

By 6.5 years, boys reach parameters 119//21.700. The lower limits for this age are 113.8//19.000, and the upper limits are 124//24.900.

Standards for seven-year-old boys: 121.8//22.900. From the bar at: 116.4//20.000 cm, to: 127//26.400 cm.

By the age of eight, children grow to 127.3 cm and weigh 25,400 grams. The lower standard for eight-year-olds will be 121.5//22.100. Upper – 132.8//29.500.

Average height and weight for nine year olds: 132.6/28.100. Lower limits: 126.6//2.300, upper limits – 138.6//33.000.

At the age of 10, boys should normally reach parameters of 137.8//31.200. Figures below 131.4 and 26.700 are assessed as low, and figures above 144.2//37.000 are considered high.

Height and weight chart for teenage girls

In adolescents, anthropometric data are monitored once a year. For an eleven-year-old girl, the average is 144.5 (height in centimeters)//34.4 (weight in kilograms). Parameters less than 136.2 // 27.8 are considered the lower normative limits, and parameters more than 153.2 // 44.6 are considered the upper ones.

Average height and weight for a twelve-year-old: 150//40.7. The lower limit of the norm: 142.2//31.8, the upper limit: 162.2//51.8.

A thirteen-year-old girl normally has indicators: 155.8//44.3. Lower data bar: 148.3//38.7, upper: 163.7//59.

At 14 years old, the average data for a girl is: 159.5//53.1. Lower limits of the norm: 152.6//43.8, upper: 167.2//64.

By the age of fifteen, the average height of girls reaches 161.6 cm, and the average weight is 55.5 kg. Lower limit of data: 154.4 // 46.8, upper limit: 169.2 // 66.5.

Average height and weight for sixteen-year-old girls: 162.4//56.5. Lower limit: 155.2//48.4, upper – 170.2//67.6.

For girls aged 17, the standard is 163.9//61. Lower limit: 155.8//52.8, upper: 170.5//68.

Height and weight chart for teenage boys

Boys aged 10 to 14 years are slightly behind girls in height; this is a normal phenomenon, since hormonal changes in boys begin a little later than in girls. But after fourteen years, boys begin to grow more rapidly than girls, and by the age of 15 they are ahead of them in terms of growth.

In adolescence, anthropometric indicators significantly depend on genetic predisposition, therefore, when monitoring the physical development of adolescents, it is recommended to focus not so much on the average indicator, but on the norm limits indicated for each age and on the child’s heredity. So, if the father of a young man is 190 cm tall, then the height of 182 cm for the teenager himself at 15 years old can be considered the norm in this case.

For an 11-year-old boy, the average figures are: 143.5 (height in centimeters)//35.5 (weight in kilograms). Parameters less than 134.5//28 are the lower limits of the norm, and parameters exceeding 153//44.9 are the upper limits.

Average height and weight for a twelve-year-old: 149//39.8. From the border: 140//30.7, to: 159.6//50.6.

A thirteen-year-old teenager normally has indicators: 155.5//44.3. From the border: 145.7//33.9, to: 166//59.

At 14 years old, the average is 161.9//49.7. From the border: 152.3//38, to: 172//63.4.

By the age of fifteen, the average height of children is 168 cm, and weight is 55.5 kg. From the border: 158.6//43, to: 177.6//70.

Average height and weight for sixteen-year-old boys: 172.3//66.9. From the border: 163.2//48.4, to 182//76.5.

At seventeen years old, the average height and weight are 176.6//66.9. From the border: 166.7//54.6, to: 186//80.1.

Video “Height and weight of the child, Dr. Komarovsky”

This calculator estimates the weight and height of a child according to his age, accurate to the day. Unlike, this calculator gives a comprehensive assessment of weight in strict accordance with the height and age of the child.

The ranges of values, methods and recommendations are based on methodological materials developed by the World Health Organization (WHO), which has conducted extensive research on the development of healthy children of different nationalities and geographical areas.

Please remember that our calculator generates results solely based on the data you provided. If you made measurements with a large error, the result will be inaccurate. This is especially true for measuring height (or body length).

If our calculator shows you the presence of any problem, then do not rush to panic: measure your height again, and have two different people take the measurements in turn and independently of each other.

Height or body length

In children under two years of age, it is customary to measure body length in a lying position, and from two years of age, height is measured, respectively, in a standing position. The difference between height and body length can be up to 1 cm, which may affect the results of the assessment. Therefore, if for a child under 2 years old you indicate height instead of body length (or vice versa), then the value will automatically be converted to that required for correct calculation.

What is the height (body length)

Growth is the most important indicator that should be monitored monthly (see). Receiving ratings of “short” and “very short” may be a consequence of prematurity, illness, or developmental delay.

Large height is rarely a problem, but a rating of "extremely tall" may indicate the presence of an endocrine disorder: this suspicion should also arise if a very tall child has both parents of normal average height.

Extremely short Significant growth retardation. It can also lead to excess weight. The participation of a specialist is necessary to identify and eliminate the cause of the lag. short Growth retardation. It can also lead to excess weight. Specialist consultation is required. Below the average A short child, height within normal limits. Average This is the height of most healthy children. Above average Tall child, height within normal limits. High Such large growth is not common, but it does not indicate the presence of any problems, so it is considered normal. Usually this growth is hereditary. Very high (excessively high?) Excessive height in a child is usually hereditary and is not a problem in itself. However, in some cases, such growth may be a sign of an endocrine disease. Therefore, rule out the possibility of an endocrine disorder by consulting a specialist. Height does not correspond to age You probably made a mistake when indicating the child's height or age.
If the baby’s growth is really the same as you indicated, then there is a significant deviation from the norm, which deserves special attention from an experienced specialist.

How does weight correspond to height?

The ratio of height and weight gives the most meaningful idea of ​​the harmonious development of a child; it is expressed as a number and is called the Body Mass Index, or BMI for short. This value is used to objectively determine weight-related problems, if any. And if there are none, then they make sure that the BMI is normal.

Please note that normal body mass index values ​​for children are radically different from those for adults and very much depend on the age of the child (see). Naturally, our calculator estimates BMI in strict accordance with the child’s age.

Extreme wasting, severe underweight Severe body weight deficiency. Severe exhaustion. Nutritional correction and treatment as prescribed by a doctor are necessary. Wasting, underweight Body weight deficiency. Insufficient weight for specified height. It is recommended to adjust your diet as prescribed by your doctor. Reduced weight Weight is within normal limits. The child is less well-fed than most of his peers. Norm Ideal weight to height ratio. Increased weight (risk of being overweight) The child's weight is normal, but there is a risk of gaining excess weight.
In this case, it is recommended to pay attention to the weight of the child’s parents, because Having obese parents significantly increases the risk of a child gaining excess weight.
In particular, if one of the parents is obese, then with a 40% chance the child will gain excess weight. If both parents are obese, the likelihood of the child becoming overweight increases to 70%. Overweight It is recommended to adjust your diet as prescribed by your doctor. Obesity Nutritional correction and treatment as prescribed by a doctor are necessary. Obesity: Nutritional correction is necessary as prescribed by a doctor. Not assessable You may have made a mistake when specifying the child's height, weight or age.
If all the data is correct, then there is a significant deviation from the norm, which requires special attention from an experienced doctor.

What is the weight

A simple weight estimate (based on age) usually gives only a superficial idea of ​​a child's developmental pattern. However, receiving ratings of “Low weight” or “Extremely low weight” is a good reason to consult a specialist (see). The full list of possible weight ratings is below:

Severely underweight, extremely low weight Underweight, low weight The child is likely malnourished or has developmental delays. It is necessary to consult a specialist. Less than average Weight is below average, but within the normal range for the specified age. Average This weight is typical for most healthy children. Above average In this case, compliance with the norm should be assessed by body mass index (BMI). Very big In this case, weight is assessed using body mass index (BMI). Weight is not appropriate for age You probably made a mistake when indicating the child's weight or age.
If all the data is correct, then the baby may have problems with development, weight or height. See height and BMI estimates for details. And be sure to consult an experienced specialist.

In 2006, the World Health Organization (WHO) published new standards for the weight and height of children under one year of age and older. But no standards can be called impeccable, because every person is individual and babies are no exception.

Additional external factors often leave their mark on the intensity and harmony of the baby’s development. Suffice it to recall the fact that bottle-fed children recover much faster than those who are breastfed. Therefore, the weight and height standards for children under one year of age are advisory in nature. and are used as a guide when observing a child by pediatricians.

Significant deviations in the approved indicators can only serve as an impetus for examination, in order to exclude possible pathologies in the health of a small patient or simply indicate the need to adjust the diet or diet in order to avoid possible complications in the future.

Anthropometric indicators

The most important anthropometric indicators in the development of an infant, a child under one year old, are data on the increase in his height and weight. Even taking into account genetic predisposition (hereditary factor), feeding characteristics, and level of care, the growth of all newborns follows a certain cycle. It consists of the following: dynamic growth for the first 3 months, with a gradual decrease in intensity in each subsequent month.

As for weight, this parameter is “tied” to growth; it is more dependent on the influence of external circumstances (nutrition, care, etc.). The first months, on average, can vary about 800 g, gradually the intensity of the increase decreases and directly depends on the health, individual characteristics, appetite and quality of feeding of the baby.

Averages at birth

According to statistical data, the weight of newborns ranges from 2.6 kg to 4.5 kg. The spread in height indicators is limited to a limit of 45 cm to 56 cm. All this is a generally accepted standard, and there is no need to panic if your baby does not fit into it.

What indicators should mom focus on?

As mentioned above, you should not force yourself into the strict framework of WHO-recommended standards. After all, it is much more important for mom and dad to see their little one healthy and cheerful. However, knowing the parameters your pediatrician checks can be very helpful. Let's consider the standards for weight and height of children under one year old according to WHO and the physical development of infants. Approximately, the monthly increase is:

FIRST

• weight – 600 g
• height – 3 cm

SECOND

• weight – 800 g
• height – 3 cm

THIRD

• weight – 800 g
• height – 2.5 cm

FOURTH

• weight – 750 g
• height – 2.5 cm

FIFTH

• weight – 700 g
• height – 2 cm.

SIXTH

• weight – 650 g
• height – 2 cm

SEVENTH

• weight – 600 g
• height - 2 cm

EIGHTH

• weight – 550 g
• height – 2 cm

NINTH

• weight – 500 g
• height – 1.5 cm.

TENTH

• weight – 450 g
• height – 1.5 cm

ELEVENTH

• weight – 400 g
• height – 1.5 cm

TWELFTH

At this age, the initial weight (at birth) should approximately triple, and the body length will increase by about 25 cm.

Naturally, all the figures given are very approximate; it is important for parents of a newborn to have constant and close contact with the treating pediatrician. Only a doctor who knows all the features of a baby’s individual development has the opportunity to answer troubling questions that arise from time to time, including those regarding height and weight gain.

Additional factors

Low indicator (very low) or high (very high) - suppose your baby’s height or weight falls into the specified zones, this means that his development does not coincide with the expected norms.

There is no need to panic over trifles, such a discrepancy is quite common, but caring parents are obliged to be vigilant, so to begin with, you can limit yourself to a consultation with a specialist; you may need to conduct an examination. It is also worth paying attention to the fact that the table of girls’ height and weight differs in terms of indicators from boys’ “dimensions”:

But the question arises as to what causes standards to lag behind/be ahead of them. The problem most often lies in the uncoordinated nutrition of the child - a lack of mother's milk or overfeeding the artificial baby with formula. The first provokes insufficient development and weak immunity. Perhaps you should find out. In the second case, excess weight appears, which is why the baby’s activity suffers (the child later learns to crawl and walk).

The problem is probably an incorrect (excessive or insufficient) or . The manifestation of allergic reactions and a tendency to protracted colds cannot be ruled out. It is bad in any of these situations, so it is necessary to involve a specialist.