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Average Weight of 6 Month Old

Monitoring the dynamics of a child’s weight gain is very important. The control of the correct development of the baby is carried out in this way. The stability of growth and weight is a guarantee of the health and well-being of a child of any age.

A child of six months should be quite grown up and strong. He becomes much more active and inquisitive. Eating because of this causes some problems. The kid is distracted and loses his appetite. Often this leads to jumps in weight gain.

Children by 6 months, according to statistics, are gaining about 1.3 lb to the previous indicator. Weight gain may be less. It all depends on the initial weight, lifestyle of the baby, and his nutrition. A deviation is considered if the baby has lost weight or gained quite a bit.

The average weight of 6 month old baby

The average weight for boys at six months is 17.4 lb. These data for girls are slightly lower and at 6 months they weigh 15.8 lb.

6 Month Old Baby Weight

Your child’s average weight may not meet these standards. Girls and boys grow at about the same pace, but initially, their weight is different. The average value for 6 months is different for them. A strong deviation from the norm should be considered individually based on data at birth, possible weight loss, and the presence of diseases.

Every Baby has Different Weight

We are all completely different. There are no two identical people. A set of genetic information is laid at conception. It is impossible to change it. Weight can also be determined by heredity. Features of gestation, mother’s nutrition during pregnancy, unplanned childbirth, and other external factors can affect how the baby will be born.

Factors affecting weight

Many factors on which weight depends expand the range of maximum allowable norms. These are ethnic features of the physique, genetics, the presence of chorionic diseases, a forced diet, and so on. Weight can be affected by a sudden change of scenery, stress, a bad atmosphere in the house, or a change in conditions.

You should not worry until the weight of the child is below the extreme value. Everything else can be considered normal. If the baby was born prematurely, he will have his schedule reflecting the ratio of height and weight by month.

How Much Boys Weight at 6 month Old

A boy can weigh between 14.3 and 21.1 lb by six months of age. These broad tolerances are based on the baby’s initial weight and their rate of weight gain. Boys keep gaining 1.3 lb per month. That’s about 0.7 ounces a day.


The average weight of a 6 month old boy according to statistics is 17.4 lb. This value will be in a child born with a standard build and observing a stable rate of weight gain. The baby from month to month should grow by a certain number of pounds. It will reach the average level given in the CDC data under these conditions.

Everyone has their growth rate, as well as weight gain. Focus not on averages, but the range of acceptable values.

5th Percentile Weight

The 5th percentile weight of a 6 month equals 14.3 lb. Anything below this mark is considered underweight. You need to look for the cause of being underweight in such a situation. It can lie in the lack of milk in the mother, health problems, and violation of the daily routine.

The value of the 5th percentile weight can already signal a lack of nutrition. It is necessary to seriously think about the introduction of the mixture if it was not previously available. Complementary foods are allowed for 6 months. Complementary foods can be started with cereals if strong underweight is noticeable.

95th Percentile Weight

The upper weight limit for boys at 6 months is 21.1 lb. Scores above the 95th percentile weight are considered critical. They may be the beginning of obesity. You should start with the weight of your baby if you introduce complementary foods. Sometimes you can replace one or two breastfeeds with complementary foods. This is necessary in order not to overfeed the child.

How Much Girls Weight at 6 month Old

Girls 6 months old according to the CDC weigh from 13 lb to 19.1 lb. The weight of a particular child will be determined by birth data and nutrition in the first months. This will affect whether it is the average value or the highest or lowest.


The average for girls with a stable monthly weight gain by 6 months will be 15.8 lb. This is the ideal value that is established by statistical analysis while observing all standardized norms. This weight will be in a baby who was born at least 6.6 – 7.7 lb and gained at least 1.3 lb every month.

5th Percentile Weight

The lower weight limit for a 6 month old girl is 13 lb. Anything below the 5th percentile weight is considered a significant shortfall. This may indicate a nutritional problem. Stock up on formula if you have a breast milk deficiency problem. A baby at 6 months old can try vegetable and fruit purees of neutral flavors. It is better to add cereals if the body weight loss is very large.

95th Percentile Weight

The 95th percentile weight for a six-month-old girl stops at 19.1 lb. This is the maximum weight limit. Obesity can be observed in his trait.

The indicator on the upper limit of the norm indicates excess weight. It is worth considering a serious reduction in food in one go if the baby is gaining too much weight. You can remove night feedings by replacing them with water. Such measures should be agreed upon with the pediatrician.

What is Considered Obesity for 6 month old?


This is the onset of obesity if the girl’s weight is 19.6 lbs or more. Such figures are acceptable only with the large growth of the child and its initial size. All values that exceed the 95th percentile weight are considered to be maximally redundant. These values are seriously exceeding the maximum permissible norms.


You need to think about if the boy’s weight is already at the highest position of the norm. Adjusting your diet and lifestyle will help you control your weight and keep it within the normal range. Boys are no different from girls in terms of nutritional needs. They are initially larger but are also at risk of obesity.

The problem of obesity in the modern world is very relevant. It is necessary to more closely monitor the regime of the day to significantly reduce the risks of such a deviation. Do not overfeed your baby at night and try to separate breast milk and complementary foods.

Signs That Baby is Not Eating Enough

Nutritional deficiencies may increase the risk of developing a large number of diseases. It is necessary to learn to recognize the signs of malnutrition to avoid it. Consider the most famous of them:

Loss of weight for a monthThis indicates a nutritional deficiency if in one month the child gained much less than 1.3 lb.

Loose stoolsThe baby is malnourished when he rarely poops.

Frequent cryingThe child may cry all the time, demand breasts, and be mean and anxious. This is especially pronounced at night. This behavior confirms the presence of hunger.

Recommendations for Parents and Their Babies

Any recommendations should be justified, even those given by your doctor. Dieting is a very extreme measure. It is permissible only with obvious obesity. Nutrition advice should only be taken from reliable sources. Do not use the opinions of others or other mothers who consider themselves experienced.

Nutrition and Diet

The time for the introduction of complementary foods occurs at 6 months. It is advisable to start it with vegetable purees. Many pediatricians recommend starting complementary foods with cereals with serious underweight. They are more caloric and nutritious. Opt for zucchini or pumpkin vegetable puree in a situation where the weight is stable.

Diet is the last resort for overweight. It can only be prescribed by a doctor. A diet cannot severely restrict nutrition. It must be kind.


Children should be very active by six months. Many children already sit up, crawl well and try to spend the wakeful period in constant movement. Don’t limit your child to car seats, cribs, and playpens. Give him freedom. Include additional exercises to keep fit. If you have not visited the pool before, you can start now. Babies 6 months old can swim very well. The pool is a good alternative to strict diets.

Load your child mentally

Active work of the brain spends much more energy than physical work. You can start doing logical exercises with your child as early as 6 months. Teach him to distinguish colors, show pictures, and name objects. Talk to him more often. The work of the brain wastes resources and contributes to the indirect regulation of weight.

Keep a diary of your child’s height and weight

Keep a diary of your baby’s weight and height. It will be extremely relevant during the period of weight problems if you have not started it before. This will allow you to better control the parameters and analyze the trends in weight gain. You can point out the probable factors for reducing the norms or their sharp increase. Such a scheme will help to eliminate the causes of violations in time.

Why Your Baby’s Weight is Not Close to Average

Weight norms rarely coincide with general statistics. Most often they occupy a place in the interval of possibly acceptable parameters. You should not be very worried if the baby does not fit into the methodological framework. There are many reasons for this:

The child refuses complementary foods

The introduction of complementary foods at 6 months is necessary for the baby because he can no longer be limited to mother’s milk alone. This can significantly reduce the weight of the baby if he categorically refuses any complementary foods.

Sleep regression

Weight can decrease during sleep disturbances. This is due to violations of the regime of the day, unstable sleep during the day, and poor sleep at night.

Exceeding the period of wakefulness

Wake time increases with age and this leads to deviations in weight. The baby moves a lot, skips meals, and pushes back the sleep schedule.

Hereditary factor

Children of parents of the large build will also be large. They do not fit into the average weight. Sometimes their body weight is much higher than normal.

Digestive disorders

Increased gas production, malfunctioning of the pancreas, and other problems of the gastrointestinal tract reduce the overall indicators of weight gain. Indigestion leads to weight loss.

Developmental delay

Children with this problem may fall far short of accepted standards for both weight and height. They are initially born a little less than the usual norms and then do not gain the required body weight every month.

When Should You Worry?

Parents have plenty of reasons to be concerned. The kid increases the level of his sociability in six months. Many begin to give a more understandable emotional reaction. It is better to consult a specialist if every meal is accompanied by negativity and the baby is nervous during the day. Perhaps the child is malnourished or is experiencing discomfort when eating.

A six-month-old baby should wake up at night no more than 1-2 times. Children sometimes sleep through the night with proper adherence to the regimen and good nutrition. Look for the cause if there is frequent awakening. It can be hidden in digestive problems, milk intolerance, or overeating. Often the cause is hunger.

The poor condition of the skin and hair, severe thinness, and scanty and rare stools should also be alarming. Find out the causes of these symptoms. Most often they are associated with nutritional deficiencies.


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