Measurement of chest circumference and lung volume in men, women and children. The concept of chest circumference The main measurements of typical children's figures of preschool age

Determination of the circumference of the chest and head is carried out to assess the physical development of a person, mainly in childhood, and also to identify certain diseases associated with the respiratory system. The correct algorithm for taking measurements is made by a doctor, his assistant or a nurse using special equipment and appropriate devices. Lung volume is measured with a spirometer.

Measurement of chest circumference in adult men and women

The measurement of the circumference of the chest is carried out using a centimeter tape in a standing position. The person must be at rest. To do this, the chest is freed from outer clothing, preferably the lower one, so that the most accurate measurement is obtained. The correct application of the measuring tape should be along the lower edge of the shoulder blades from the back side and at the level of the 4th rib in front. If you look at external signs, then in men this parameter is measured by the level of the nipples, and in women by the base of the mammary glands or under them. The correct application of the tape should be tight, but without excessive tension. It fits in a strictly horizontal position. In an adult, when a certain age is reached, the development and growth of the chest stop. Changes can occur only in the presence of pathological processes in the patient's body.

For children of the first year of life, such a procedure is included in the category of mandatory, it allows you to determine the individual characteristics and level of physical development of the child for his age.

It is worth noting that usually the average chest measurements for men and boys are 5 cm higher than for women and girls. However, there are a number of reasons that can affect the spread of these values, as a result of which it may turn out that the chest of a woman or girl has large indicators, and this will also be the norm, without any concomitant pathologies.

Together with the circumference of the chest, the measurement of the circumference of the head is carried out. The child is seated on a chair or laid down. Behind the centimeter tape is located along the maximum protrusion of the occiput, in front - passes along the superciliary arches. The growth of the chest is especially rapid in the first years of a child's life and is highly dependent on body weight. During the first 12 months of life, the size of the chest of a newborn will increase by an average of 13 centimeters, which is equal to 50% of the growth in body length over the same period of time. In babies, the circumference of the chest is measured in the supine position. This approach applies to children who are at least 2 years old.

There are average values ​​for changing the circumference of the chest and head. Anthropometric data are calculated for men and women from birth to adulthood:

Age	Chest circumference in boys, cm	% from body length	Head circumference in boys, cm	% of body length	Chest circumference in girls, cm	% of body length	Head circumference in girls, cm	% of body length
At the time of birth	33	68	36	68	31	66	35	67
1 month	35	66	37	66	34	65	36	67
2 months	37	66	38	66	36	65	37	68
3 months	38	66	41	65	37	65	39	68
6 months	42	64	43	65	40	64	41	65
9 months	44	64	45	63	43	64	44	64
1 year	45	62	46	62	46	63	45	61
2 years	50	58	47	56	51	60	46	56
3 years	51	55	49	51	51	58	47	52
4 years	52	51	50	50	53	56	49	50
5 years	54	51	51	46	54	53	50	47
6 years	56	49	52	44	56	52	51	43
7 years	57	47	53	42	58	50	51	42
8 years	58	46	53	40	59	47	51	44
9 years	60	46	54	39	62	49	51	45
10 years	63	45	54	39	63	48	52	40
11 years	65	45	54	38	67	48	53	37
12 years	67	46	55	36	70	48	53	35
13 years	70	47	55	35	75	48	54	34
14 years	75	47	55	34	77	49	54	33
Adult	88	50	56	33	83	50	55	32

Alignment can occur both up and down. At the appointment in the doctor's office, chest excursion is measured. This is done by subtracting the expiratory values ​​from the inspiratory values. Normally, it is in the range of 5 to 10 cm. Deviations from it can call into question problems with the lungs. People involved in sports may also have increased rates between the upper and lower values ​​​​by 3-5 centimeters. The overall increase in lung volume is observed in professional athletes and can significantly exceed the average value up to 30% or more.

The vital capacity of the lungs is a functional indicator that determines the capabilities of the human respiratory system. Using a medical device (spirometer) measure. The person stands exactly on a horizontal surface and exhales with maximum force into the mouthpiece of the spirometer. A total of 3 such measurements are taken for a more accurate result. The scores are added up and divided by the resulting figure. The measurement accuracy is rounded to the nearest 100 cm³.

Determination of lung volume

To evaluate the obtained indicators, the Ludwig formula is used:

• Calculation for men: VC \u003d 40 * height (cm) + 30 * weight (kg) -4400;

• Calculation for women: VC \u003d 40 * height (cm) + 10 * weight (kg) -3800.

For the formula, you can use indicators from the table:

Weight, kg	Height, cm
	160	170	180	190	200
	50	3000	3300	3600	3900	4200
60	3300	3600	3900	4200	4500
70	3600	3900	4200	4500	4800
80	3900	4200	4500	4800	5100
90	4200	4500	4800	5100	4400
100	4500	4800	5100	5400	5800

With age, there are deviations towards a decrease in lung volume, including due to a decrease in the level of activity compared to young people.

Outcome

The circumference of the chest, volume and excursion are directly related to the level of physical development of a person and are the most important indicator of the state of health, but there is a reasonable limit to everything and it is worth sticking to the golden mean so as not to injure yourself with excessive loads or their complete absence.

Majority women very critical of their breasts. This comes from the generally accepted standards of beauty, which encourage us to evaluate the mammary glands solely from a visual point of view. Not many people understand that the ideal size is individual for each of the fair sex. The rate depends on many factors.

Normal breast sizes in women

Any breast size can be considered normal. Depending on who owns it. It may seem that a thin girl with a fifth breast size looks ridiculous, just like a curvy woman with a zero. However, not always nature picks up breasts for the physique.

As a rule, the size of this body is determined body's hormones, lifestyle. The amount of exercise received is greatly affected. The size does not radically depend on sports exercises, however, some types of activities determine the form.

Any natural size chest normal. The Russian size grid classifies sizes from zero to five. Both small and large mammary glands are able to provide the formation and secretion of milk for the child.

How to measure the size of a woman's breast?

For determining your breast size, you need to measure the circumference under the bust in centimeters. After that, the girth is measured at the level of the most protruding points of the chest. For the second measurement, it is advisable to wear a loose bra without foam rubber. It is recommended to entrust the measurements to a loved one, since the most accurate result is obtained with lowered hands.

After that the second result is subtracted from the first, and the resulting difference determines the value:
10 - 11 cm - 0 size
12 - 13 cm - 1 size
14 - 15 cm - size 2
16 - 17 cm - 3 size
18 - 19 cm - 4 size
20 - 21 cm - 5 size

What affects breast size?

Breast is a hormone-dependent organ. Its size is determined by the presence of estrogen in the body. Their number is usually hereditary. Forms the mammary gland glandular tissue that can be felt around the nipple.

The amount of fat organism can also influence the value of . Therefore, with significant fluctuations in the weight of a woman, the size of the organ can change in one direction or another. However, this is not always the case.
On the form chest influenced by physical activity. Special exercises can slightly adjust the appearance of the chest.

Normal sizes of female breasts at 14,15,16 years

As already mentioned, the normal size of the mammary glands for each individual. However, you can give the average data on young girls. As a rule, glandular breast tissue is formed at the age of 10-20 years.

TO 14 years breast size varies from the first to the first and a half sizes.

TO 15 years old reaches the second, if not stopped in growth.

IN 16 years, as a rule, the active phase of growth stops, stopping at the second and a half or third size, if the girl is predisposed to such.

Small breast augmentations are possible up to 20 years. If you do not take into account changes during pregnancy and lactation.

Problems of large mammary glands

Despite the fact that most of the young ladies seeks to achieve a large size of one of the sexiest organs, massive breasts can cause a lot of inconvenience. Starting from the difficulties in choosing underwear and ending with back problems.

The following is a list of the most common problems of owners prominent mammary glands.
- Discomfort when playing sports;
- Profuse sweating under the breasts during hot periods;
- The ability to feed the baby only in the supine position;
- Intrusive attention from members of the opposite sex;
- Pain in the spine;
- Inability to sleep on the stomach;
- Difficulty in choosing a beautiful bra;
- On a large chest, the law of universal gravitation is reflected to a greater extent.

- Return to the section heading " "

^ Average chest circumference in girls 7-17 years old

Age, years	M, cm	±SE
7	59,4	0,3
8	61,9	0,9
9	62,9	0,9
10	65,9	0,8
11	69,9	1,9
12	75,2	1,9
13	78,2	2,6
14	79,0	3,0
15	80,7	1,3
16	80,7	0,9
17	81,4	0,7

As follows from the data in the table, the circumference of the chest slowly increases from 59.4 cm at 7 years to 75.2 cm in the year of menstruation. By the age of 14, the average value of the estimated indicator reaches 79.0 cm. At the age of 15-16 years, the dimensions of the chest circumference turned out to be equivalent - 80.7 cm, in girls of 17 years the chest circumference was equal to 81.4 cm.

The centile values ​​of the circumference of the chest, presented in
table showed that at the age of 7, most girls have values
chest circumference ranged from 58 to 60 cm.

^ Centile values ​​of chest circumference

girls 7-17 years

Age,	3	10	25	50	75	90	97
years	centile
7	56	57	58	59	60	62	63
8	56	58	60	62	64	67	68
9	58	59	61	63	64	67	71
10	61	62	64	66	68	69	72
11	62	64	67	70	72	76	80
12	65	69	72	75	78	81	84
13	69	71	76	78	80	83	90
14	71	72	75	79	82	87	90
15	74	76	78	80	82	85	89
16	77	78	78	80	81	83	86
17	77	78	79	81	83	85	88

At the age of 14, the range of values ​​for most schoolgirls was 7
cm (75-82 cm). By the end of puberty, at age 17,
the predominant number of examined chest circumference was
equal to 79-83 cm. As a result of the research, it was revealed
progressive increase in chest circumference, persisting
even for girls 15-17 years old. Its most significant gains
were registered between 10 and 11, 11 and 12 years, equal to 4.0 cm (18.2%) and 5.3
cm (24.0%). It should be noted that at the age of 15 and 16 years, the values ​​of this
parameters are equivalent.

Age dynamics of changes in chest circumference
happened unevenly. Up to 11 years of age, the standard deviations were
the least pronounced and closest to each other (1.7-3.3 cm). IN
in subsequent age groups, the range of values ​​was more pronounced and

Reached a maximum of 14 years (6.4 cm), which indicated significant
individual differences. After 15 years, individual fluctuations
the circumference of the chest decreased and at the age of 17 they were equal to 3.1 cm.

Compiled centile tables allowed us to assess the degree
harmony of the physical development of girls of all studied ages, in
including health groups.

According to the results of the study, it was found that physical development
girls of 7 and 8 years of age in most cases (79.3% and 82.1%)
is harmonious. However, it was noted that approximately every
the fifth girl (20.7% and 17.9% respectively) had disharmony
physical development, manifested by a lag in body weight from height.
Pronounced asthenic body type was determined in 4.7% of girls 7
years and 1.3% - 8 years.

Among schoolgirls 9-10 years old, the number of harmoniously developed girls
slightly increased - up to 89.9% and 91.5% respectively. Revealed
regularities were observed both in absolutely healthy girls and in
girls of the 2nd and 3rd health groups.

Similar trends in the physical development of girls continued
persist up to 12 years.

In 12-13 year old girls, based on the data obtained, again
an increase in the frequency of disharmony of physical development was noted. So,
for example, at the age of 10, 8.5% of those surveyed turned out to be disharmoniously developed,
and at the age of 13, the frequency of their detection was 20.6%. Moreover, in this age
period, it was not possible to identify the dependence of the degree of harmony of development on
the general health status of girls. Percentage of girls with harmonious
development in health groups 1 and 3 was 75 and 73, respectively,
similarly, the frequency of detection was disharmoniously correlated (20% and 19.2%) and
sharply disharmonious (5% and 7.5%) developed girls.

^ The ratio of the degrees of harmony of physical development
surveyed girls aged 7-17, %

Age, years	harmony	Moderate	sharp
		disharmony	disharmony
7	79,3	16,0	4,7
8	82,1	16,6	1,3
9	89,9	5,9	4,2
10	91,5	5,5	3,0
11	86,0	11,0	3,0
12	83,5	13,0	3,5
13	79,4	15,3	5,3
14	83,9	12,4	3,7
"15	81,0	14,5	4,5
16	87,8	ID	1,1
17	83,2	14,1	2,7

At the age of 14, while maintaining the above
patterns, we registered a significant difference in indicators
harmony of the physical development of girls of different health groups, not
previously identified. In the 3rd health group, harmoniously developed were
68.0% of the examined, and disharmonious - 32.0%, while in groups 1 and 2
health, the number of harmoniously developed ranged from 80.0% to 93.0%.

From the age of 15, as was shown in the example of dynamics
the main parameters of physical development, growth slows down, decreases
weight gain and chest circumference. Entry into
the final stage of physical maturation is also reflected in the indicators
harmonious development of girls.

In the period from 15 to 17 years, no significant
frequency redistribution of harmoniously and disharmoniously developed girls.

Moreover, in the group of 15-17-year-old schoolgirls, it was not possible to identify a clear
dependence of harmonious development on the level of general health.

When assessing puberty conducted in all 2000 girls 7-
17 years old, the focus was on determining the degree
the severity of secondary sexual characteristics in the studied age
groups, identifying the age of menarche and features of the formation
menstrual cycle. In addition, an important indicator of development is
pelvic configuration.

Attention was drawn to the synchronicity of the increase in all studied
pelvic dimensions within each age group. As a result
coherence increase in size the form of the vast majority
of the bone pelvises of the examined girls corresponded to the female
morphotype.

We have identified 3 main age periods of active increase
the size of the pelvis in the examined girls - at 8-9 years old, 10-12 years old and at 15-16 years old.
The most intensive growth was observed in the age range from 10 to 12 years,
that is, on the eve of menarche. Intertrochanteric size increased by 3 cm,
interridge and interspinous by 2.4 and 2.5 cm and external conjugate - by 2.6
cm, which accounted for a third of the total increase in the size of the pelvis from 7 to 17
years. In the next 2 years, there was a slight slowdown in growth rates
pelvic bones, with a predominance of an increase in transverse dimensions (by 0.9-
1.1 cm) above the outer conjugate (0.5 cm). By the age of 17, the overall increase
intertrochanteric size was 8.3, intercrest - 7.5, interspinous -
7.0 and external conjugates - 6.4 cm.

^ Indicators of the size of the pelvis in girls 7-17 years old

Age,	Interspinous	Interridge	Intertrochanteric	Outdoor
years	size	size	size	conjugate
7	16.9±0.3	19.0±0.03	21.2±0.04	12.5±0.04
8	17.5±0.03	19.6±0.04	21.7±0.04	13.4±0.05
9	18.5±0.08	20.8±0.06	23.0±0.07	14.0±0.05
10	18.7±0.05	21.3±0.06	23.5±0.07	14.4±0.07
11	20.3±0.1	22.8±0.1	25.3±0.1	16.0±0.08
12	21.2±0.08	23.7±0.1	26.5±0.2	17.0±0.07
13	21.7±0.1	24.4±0.1	27.4±0.2	17.4±0.1
14	22.2±0.5	24.6±0.1	27.6±0.1	17.5±0.1
15	22.5±0.06	25.0±0.09	28.1±0.1	17.9±0.06
16	23.5±0.04	26.0±0.06	28.9±0.1	18.6±0.08
17	23.9±0.03	26.5±0.06	29.5±0.08	18.9±0.03

The following tables present the centile distributions
external dimensions of the pelvis in girls for the studied age period.

^ Centile values ​​of the interspinous size of the pelvis in girls 7-17

Age,	3	10	25	50	75	90	97
years	centile
7	15,9	16	16,5	17	17,5	18	18
8	16	16,9	17	17,5	18	18	19
9	17	17,5	18	18,5	19	19,2	20
10	17,5	18	18	18,5	19	20	20
11	18	18,5	19	20,1	21,2	22	22
12	19	19,5	20,5	21,3	22	22,3	23
13	19	20	21	21,8	22,5	22,6	23
14	20	20,5	21,2	21,9	22,5	23	24
15	21	21,5	22	22,5	23	24	24
16	22	22,5	23	23,5	24	24	24,5
17	22,5	23	23	23,5	24	25	25

^ Centile values ​​of the intercrest size of the pelvis in girls 7-17

Age,	3	10	25	50	75	90	97
years	centile
7	18	18	18,5	19	19,5	20	20
8	18	19	19	19,5	20	20,5	21
9	19	20	20	20,8	21,5	22	22,5
10	20	20	20,5	21,3	22	22,5	23
11	20,5	21	21,8	22,8	23,8	24,2	24,6
12	21	22	23	23,8	24,6	25	25,6
13	22	22,5	24	24,8	25,5	25,9	26
14	22,5	23	24	24,8	25,5	26	26,8
15	23,5	24	24,5	25,2	25,8	26,5	27
16	24,5	25	25	25,5	26	27	27
17	25	25	26	26,5	27	28	28

^ Centile values ​​of the intertrochanteric size of the pelvis in girls

Age,	3	10	25	50	75	90	97
years	centile
7	20	20	20,8	21,4	22	22	22
8	20	21	21	21,6	22,2	22,5	23
9	21,5	22	22,2	22,9	23,5	24	25
10	22	22,4	23	23,6	24,2	24,8	25
11	23	23,5	24	25	26	26,8	25
12	23,6	24,5	25,5	26,8	28	28,3	28
13	24,3	25	26,2	27,4	28,5	29	29
14	25	26	26,5	27,5	28,5	29,5	29
15	26	26,5	27	28	29	30	30
16	27	27,5	28	28,8	29,5	30	30,5
17	27	28	29	29,5	30	31	31,5

^ Centile values ​​of the external conjugate of the pelvis in girls 7-17

Age,	3	10	25	50	75	90	97
years	centile
7	11,8	11,8	12,2	12,5	12,8	13	13,3
8	12	12,5	12,8	13,4	14	14,5	14,7
9	12,5	13	13,5	14	14,5	14,8	15,5
10	13	13,5	13,8	14,3	14,8	15	17
11	13,8	14,5	15	15,8	16,5	17,5	18,3
12	14,8	15,8	16,2	16,9	17,5	18	18,5
13	15	15,5	16,5	17,5	18,5	18,6	19
14	15	15,6	16,5	17,5	18,4	18,9	19,5
15	15,8	16,8	17,5	18	18,5	19	19,5
16	17,5	17,8	18	18,5	19	19,2	19,5
17	17,5	18	18,5	19	19,5	19,5	20

A centile assessment of the size of the pelvis, taking into account age, allowed more
fully characterize the harmonious development of not only the bone pelvis, but
and general physical development of Nalchik schoolgirls.

To assess the state of the body, doctors have to measure different indicators, each of which has its own characteristics and significance. One of these indicators is chest circumference, which is measured in both children and adults.

Measurement algorithm

The value of the circumference of the chest allows you to evaluate the transverse dimensions of the human body. These sizes have certain standards that doctors are guided by, thanks to which it is possible to find out from the measurement results whether there are deviations in the development of the child or the well-being of an adult.

It should be said that the norms in this case, as in many others, are a relative concept, despite the fact that there is a certain table of optimal values. The circumference of the chest can be influenced by many circumstances in addition to diseases, so you should not draw premature conclusions when abnormalities are detected.

The doctor should analyze all aspects that could affect the volume of the chest and only then make a decision. Therefore, when it comes to estimating the circumference of the bust, a comparison with average values ​​according to age is implied.

In order for the results to be accurate, you need to know how to measure this indicator, and follow certain rules:

1. The easiest way to measure chest circumference in children and adults is to use a soft measuring tape.
2. Measurements are taken while standing (both the person measuring and the person being measured must stand).
3. The patient's hands should be lowered.
4. The tape should not be applied too loosely, but not tight - it should not be an obstacle to breathing.
5. Measurements are made in the area of ​​the 4th pair of ribs on the front of the body and along the lower borders of the shoulder blades - behind. That is, the measuring tape should pass through these areas.
6. The position of the tape is strictly horizontal.

The measurement of the circumference of the chest in both children and adults is performed in this way. If the child is very small, it is permissible to do this when the baby is in a supine position. There are some differences in the course of measuring the breasts in women and men.

When this indicator is measured in a man, the tape should fit under the nipples. If you need to find out the circumference of the chest in a woman, you should apply a tape either under the breast or above its base.

There is another criterion that should be evaluated for such measurements - this is chest excursion. This term is understood as the difference between the indicators of chest girth during maximum inspiration and expiration.

That is, you need to measure the volume of the chest during an active breath, and then - after a maximum exhalation. These data also contribute to clarifying the diagnosis and identifying developmental features.

Why do you need to take such measurements?

The need for such data is due to several circumstances that differ for adults and children. Next, we consider in more detail the goals of such measurements in different age groups.

Targets of measurement in children

With regard to young patients, this procedure is used in order to make sure that their development is correct. The fact is that the child's chest grows very actively as the internal organs, respiratory muscles and the whole body develop.

In the course of many years of research and observation of children, a table was developed, given which it is possible to determine how harmoniously and in accordance with age the baby develops. This table indicates the average values ​​of this criterion at different age stages, thanks to which the doctor determines whether the child is developing normally.

Some deviations from this table are acceptable, but with serious discrepancies, careful analysis and diagnostics are required to establish the causes of such an unfavorable phenomenon. At the same time, it should be said that too high chest volume values ​​are no better than too low values.

How harmoniously a small patient develops can be judged based on the criterion under consideration in combination with many others, such as weight, height, head circumference, etc. It is the correspondence of these parameters to each other, as well as to age norms, that makes it possible to establish whether the child development.

Taking measurements in adults

In adults, measurements of this type are aimed at detecting pathologies or clarifying the diagnosis. At a certain age, the growth of the chest stops, and its changes are possible only with the development of diseases.

Most often, these are respiratory diseases (for example, emphysema, which causes an increase in the chest), but sometimes such changes are associated with other problems. In the presence of hormonal disruptions in a person, weight can change, due to which the volume of the breast also increases.

The circumference is not the main method for diagnosing diseases; its use for adults is rare, since there are a large number of methods that are more informative. But for children of the first year of life, this procedure is mandatory, because without it it is very difficult to assess how fully the development of the child proceeds.

Normal indicators and deviations

Below is a table that shows the average chest circumference at different ages. It presents the average chest circumference for males and females in centimeters and as a percentage of body length. Physicians need to know these values ​​in order to work effectively with patients of different ages.

It must be said that the values ​​of this indicator for girls and women are slightly lower than for boys and men. For example, the circumference of the chest in men, on average, exceeds it in women by 5 cm. But this does not mean that this option is mandatory. There are many reasons why a girl's chest may turn out to be larger than a boy's, and the point here will not be at all in the presence of pathologies.

This feature is affected by the rate of development of internal organs and respiratory muscles, the level of activity of the child, and many other circumstances.

Therefore, do not worry too much if you find deviations from the norm. If the diagnostic procedures prescribed by the doctor did not find any problems, this means that everything is in order.
There is a high probability that the further growth of the chest circumference will slow down or accelerate, and as a result will equalize with the norm.

Excursion rates are calculated by subtracting the maximum expiration results from the maximum inspiratory results. Its value is considered normal from 5 to 9 cm. Deviations up or down may indicate problems with the respiratory system.

But for this reason alone, no specialist will prescribe treatment, at least without additional diagnostic measures.

Below is a calculator for calculating the baby's chest circumference.

Enter the child's gender, age and chest circumference, click the "Show result" button and you will see a comparison of your child's score with the standard encyclopedic normal.

But we know that this is just a comparative characteristic and nothing more. There is no longer a need to look at many tables and look for the necessary indicator among a huge number of numbers, it still doesn’t mean much, it’s better to spend this time with your loved ones.

If you care about the health of your child and want to know how much their height, weight, chest circumference correspond to the average values, you can use our other calculators:

Measurement of chest circumference is carried out in infants in a supine position, in older children - standing. The child should be calm, keep your hands down. For measurement, a regular, flexible centimeter is suitable. The measurement is taken at the widest point approximately in front at the level of the nipples, behind at the level of the shoulder blades. First, measurements are taken on inspiration, then on exhalation. For comparison, the average chest circumference is taken.

The circumference of the chest, as well as the weight of the child, speaks of his physical development.

Chest circumference table for boys from 0 to 17 years

Age	Very low	Short	Below the average	Average	Above average	High	Very tall
Newborn	31,7	32,3	33,5	34,8	36,6	36,8	37,8
1 month	33,3	34,1	35,2	36,5	37,9	38,9	40,2
2 months	35,0	35,7	36,9	38,3	39,8	40,8	42,0
3 months	36,3	36,5	37,2	38,4	39,9	41,6	42,7
4 months	37,9	38,6	39,8	41,4	43,4	44,6	45,9
5 months	39,3	40,1	41,2	42,9	45,0	45,7	47,6
6 months	40,6	41,5	42,5	44,3	46,3	47,6	49,0
7 months	41,7	42,5	43,6	45,5	47,5	48,9	50,1
8 months	42,7	43,5	44,5	46,4	48,5	49,9	51,1
9 months	43,6	44,4	45,4	47,2	49,3	50,8	52,0
10 months	44,3	45,1	46,1	47,9	50,0	51,4	52,8
11 months	44,8	45,6	46,6	48,4	50,6	52,0	53,5
1 year	45,3	46,1	47,0	48,7	51,0	52,5	54,2
1 year 3 months	46,0	46,8	47,9	49,8	51,9	53,4	55,1
1 year 6 months	46,5	47,4	48,6	50,4	52,4	53,9	55,6
1 year 9 months	47,0	47,9	49,1	50,8	52,9	54,3	56,0
2 years	47,6	48,4	49,5	51,4	53,2	54,7	56,4
2 years 3 months	47,9	48,7	49,9	51,7	53,4	55,2	56,8
2 years 6 months	48,2	49,0	50,3	52,0	53,9	55,5	57,3
2 years 9 months	48,4	49,3	50,5	52,3	54,2	55,8	57,7
3 years	48,6	49,7	50,8	52,8	54,6	56,4	58,2
3.5 years	49,2	50,3	51,5	53,1	55,0	57,1	59,0
4 years	50,0	51,2	52,4	53,8	55,8	58,0	59,9
4.5 years	50,8	52,0	53,3	54,7	56,9	59,0	61,2
5 years	51,3	52,8	54,0	55,6	58,0	60,0	62,6
5.5 years	52,2	53,5	55,0	56,6	59,1	61,3	63,7
b years	53,0	54,4	56,0	57,7	60,2	62,5	65,1
6.5 years	53,8	55,2	57,0	58,8	61,3	63,8	66,4
7 years	54,6	56,2	57,9	59,8	62,3	65,1	67,9
8 years	56,2	58,0	60,0	61,9	64,8	67,8	70,8
9 years	57,7	59,6	61,9	64,1	67,0	70,6	73,6
10 years	59,3	61,4	63,8	66,4	69,8	73,6	76,8
11 years	61,1	63,0	66,0	68,9	74,9	76,2	79,8
12 years	62,6	65,0	68,0	71,1	72,1	79,0	82,8
13 years	64,7	67,3	70,2	73,5	78,2	82,1	87,0
14 years	67,0	69,9	73,1	76,6	81,7	86,3	91,0
15 years	70,0	72,9	76,3	80,2	85,7	90,1	94,3
16 years	73,3	76,2	80,0	84,5	89,9	93,6	97,0
17 years	77,0	80,0	82,9	87,2	92,2	95,5	98,4

How to measure the circumference of a child's chest

The circumference of the head of a newly born child is, on average, larger than the circumference of the chest.

During the first year, the head circumference increases by an average of 11-12 cm. In the first months, the head grows more intensively, and then its growth slows down. In the first months, the chest of a newborn grows faster than the head, therefore, around the 4th month, the head and chest circumferences become the same, and in a year the chest circumference becomes approximately 2 cm larger than the head circumference, for the first year it increases by an average of 14 -15 cm.

Subsequently, the circumference of the head of the child will be less than the circumference of the chest.

Chest circumference table for girls from 0 to 17 years

Age	Very low	Short	Below the average	Average	Above average	High	Very tall
Newborn	31,0	32,0	32,8	34,0	35,2	36,0	37,0
1 month	33,0	34,0	34,9	35,9	37,1	38,1	39,0
2 months	34,6	35,6	36,6	37,7	38,8	39,9	40,9
3 months	36,3	37,3	38,3	39,4	40,5	41,4	42,8
4 months	38,0	38,9	39,8	40,9	42,1	43,0	43,3
5 months	39,5	40,3	41,2	42,3	43,5	44,5	45,7
6 months	40,7	41,6	42,4	43,5	44,7	45,8	47,1
7 months	41,8	42,7	43,6	44,6	45,8	47,2	48,5
8 months	42,8	43,7	44,6	45,7	46,9	48,3	49,8
9 months	43,6	44,5	45,5	46,6	47,8	49,3	50,9
10 months	44,3	45,2	46,2	47,2	48,6	50,1	51,7
11 months	45,0	45,8	46,8	47,8	49,3	50,8	52,3
1 year	45,5	46,3	47,2	48,3	49,9	51,4	52,8
1 year 3 months	46,4	47,3	48,0	49,3	50,8	52,3	53,9
1 year 6 months	47,1	47,8	48,7	49,9	51,3	52,9	54,5
1 year 9 months	47,5	48,2	49,1	50,4	51,9	53,5	55,0
2 years	47,8	48,5	49,5	50,2	52,5	54,0	55,6
2 years 3 months	47,9	48,8	49,8	51,3	53,0	54,5	56,2
2 years 6 months	48,0	49,0	50,0	51,5	53,3	54,9	56,8
2 years 9 months	48,1	49,0	50,0	51,8	53,6	55,5	57,2
3 years	48,2	49,1	50,3	51,8	53,9	56,0	57,6
3.5 years	48,6	49,7	50,9	52,5	54,3	56,2	57,8
4 years	49,2	50,4	51,6	53,2	55,1	56,9	58,6
4.5 years	49,6	51,0	52,3	54,0	55,8	57,8	59,7
5 years	50,4	51,6	53,0	54,8	56,8	58,8	61,0
5.5 years	50,8	52,4	53,8	55,7	57,8	60,0	62,2
b years	51,5	53,0	54,7	56,6	58,8	61,2	63,6
6.5 years	52,3	53,8	55,5	57,5	59,8	62,4	64,7
7 years	53,2	54,6	56,4	58,4	61,0	63,8	66,5
8 years	54,7	56,3	58,2	60,8	64,2	67,6	70,5
9 years	56,3	58,0	60,0	63,4	67,7	71,4	75,1
10 years	58,0	60,0	62,0	66,0	71,3	75,5	78,8
11 years	59,7	62,2	64,4	68,7	74,5	78,6	82,4
12 years	61,9	64,5	67,1	71,6	77,6	81,9	86,0
13 years	643	66,8	69,9	74,6	80,8	85,0	88,6
14 years	67,0	69,8	73,0	77,8	83,6	87,6	90,9
15 years	70,0	72,9	76,3	80,4	85,6	89,4	92,6
16 years	73,0	75,8	78,8	82,6	87,1	90,6	93,9
17 years	75,4	78,0	80,6	83,8	88,0	91,0	94,5

Boys' head circumference is in centimeters.

These tables are indicative for determining the chest circumference of a child of average height. The parameters between the segments "below average" and "above average" are considered indicators characterizing the normal circumference of the child's chest