How much weight should a baby gain Healthily?

There is a serious concern among the families regarding how much weight a baby should gain. Almost all families want their babies to fit with other members of the family. In this topic, we will address all the factors that help the baby gain weight. 

How much weight should a baby gain is a matter of concern among parents, and they want their kids to lose their weight fast. Whether a small family or a large one, they expect baby to be perfect, without realizing that they have a variety of sizes and shapes. 

How much weight should a baby gain? The average baby weight gain is approximately 7 pounds, 5 ounces. However, babies are born overweight or underweight, because it indicates overall development or health in them.

A pediatrician has to determine the progress of your baby by monitoring several factors, i.e., head size, weight, and length. They know how much weight should a baby gain and will carefully follow all the details accordingly. Their duties include providing nutrition, physical, and mental development that will help the baby to gain weight.

Newborn Weight and Size

There are various things associated with how much weight a baby should gain. Many babies tend to lose 5-10% of weight after the initial days of their birth. This is how much weight a baby should gain because they lose extra fluid present in them at the time of birth, which disappears after some time. There is nothing to worry about weight loss until it is more than 10% of his/her weight at the time of birth.

They continue to lose weight until the first three days after their birth, which may be approximately up to 7-10% within the first week. Once 5-7 days are passed, babies begin to gain weight, and within two weeks, their weight is better compared to what it was at the time of birth and the events preceding within the week.

Once four months of birth are passed, their weight gets doubled, and within 13 months (in boys) or 15 months (in girls), their original weight gets tripled. Also, the children during this stage increase in height, up to 9-11 inches, as compared to length at birth.

Once 24 months are passed, many babies gain weight up to 4 times their original birth weight, while their height increases up to 14 to 16 inches. This is the process that defines how much weight a baby should gain. 

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Premature Infants

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As compared to healthy newborns, premature infants weigh less and are smaller in size. Their weight is dependent on how early they are born. The baby has to struggle hard and grow after birth since he/she has missed the growing time in his/her mother’s womb.

Pre-term babies are categorized into two classes, i.e., “very low birth weight” or “low birth weight.” A baby that measures less than 5 pounds (2500 grams) at the time of birth. In the United States, 1 out of 12 babies is less than a healthy weight. Mothers of these premature babies are worried about how much weight should a baby gain?   

Delayed Growth

Many children below the age of 5 years, experience abnormal or deficient weight or height gains. The child suffering from such syndrome must undergo regular baby check-ups, scheduled within 2-4 weeks, 2.5 years, and after that yearly. A child may be experiencing slow growth problems if he/she is smaller as compared to 95% of children of his/her age.

Similarly, a child whose rate of growth has slowed; however, height is normal, may also be diagnosed to have growth delay issues. In both cases, parents are worried about the question of how much weight a baby should gain. Following are some of the symptoms associated with growth delay:

  • Dwarfism – their legs or arms are much smaller in size as compared to their torso
  • Facing troubles with staying warm, energy loss, constipation, or dry hair/skin.
  • Lower growth hormone (GH)
  • Nausea, blood in stool, diarrhea, constipation, or vomiting

Babies Will Eat More and Less often As They Age

One of the main issues related to babies is that they will eat either more frequently or less, according to their age. Here is a breakdown of their eating habits depending on their ages through which parents discover patterns about how much weight a baby should gain.

1-3 Months: Frequent Feedings

Many new parents are concerned about how much weight a baby should gain. This is because the baby will increase weight in about five months.

3-6 Months: More Regular Eating

As far as nursing patterns are concerned, they continue to change. There are many varieties of eating patterns in babies that differ from others. While some babies eat less, others eat more often; however, many rely on breastfeeding. This is the time parents are confused because they don’t know how much weight should a baby gain.

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6-12 Months: Eating solid food

Parents should start giving their babies solid food once they are 6-12 months old. This is the time when babies start putting solids in his/her mouth and can sit up in their high chairs. They also watch their parents eating food with the utmost interest. This is the best time for parents to be familiar with the concept of how much weight should a baby gain.

1-3 years: Picky Eating

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Once the child is 1-3 years old, he/she starts to get moody and picky as far as eating food is concerned. Most of the parents get worried when they see their child is not taking enough nourishment according to their requirements. All they are concerned about how much weight should a baby gain?

How much your baby should weigh each month 

As mentioned above, babies weigh 7 pounds, 5 ounces on average. The following chart explains how much weight should a baby gain each month.


50% Weight of Baby Boy

50% Weight of Baby Girl

  • Birth
    • 7.8 lbs. (3.5 kg)
    • 7.5 lbs. (3.4 kg)
  • 0.5 months
    • 8.8 lbs. (4.0 kg)
    • 8.4 lbs. (3.8 kg)
  • 1.5 months
    • 10.8 lbs. (4.9 kg)
    • 9.9 lbs. (4.5 kg)
  • 2.5 months
    • 12.6 lbs. (5.7 kg)
    • 11.5 lbs. (5.2 kg)
  • 3.5 months
    • 14.1 lbs. (6.4 kg)
    • 13 lbs. (5.9 kg)
  • 4.5 months
    • 15.4 lbs. (7.0 kg)
    • 14.1 lbs. (6.4 kg)
  • 5.5 months
    • 16.8 lbs. (7.6 kg)
    • 15.4 lbs. (7.0 kg)
  • 6.5 months
    • 18 lbs. (8.2 kg)
    • 16.5 lbs. (7.5 kg)

How to Know If Your Baby Is Eating The Right Amount?

The main question that parents are concerned with is how much weight should a baby gain. Here are the following signs to know whether the child is eating the right amount of food according to his/her age or not.

When the Baby is Getting Right Amount of Food

Wet Diapers: When a baby gets a sufficient amount of food, he/she will have wet diapers. After birth, a child gets 1-2 wet diapers a day. The number rises as he/she grows and would require 2-4 poppy, 6-8 diapers, or disposable cloth within a span of 24 hours. 

Weight Gain:

After the first two weeks of birth, a baby should gain weight up to 4-7 ounces per week. Then from 6-18 months, he/she gains weight up to 3-5 ounces. This is how parents are aware of how much weight should a baby gain.

Happy and Active Baby

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When a child is getting an adequate amount of feed, he/she will appear active and alert. Furthermore, during his feedings, he will be more relaxed and happy. 

Allergic Reaction or Food Sensitivity

When the baby is around six months, he/she will increase weight 3-5 ounces per week while also grow half an inch. The perfect time to invite them to eat solids and see what happens. In case, the allergic reaction happens, it will result in rashes or diarrhea, indicating the symptoms of food sensitivity. It is important to make the baby familiar with food by showing him/her food up to 10 times. This is something mothers have to be aware of to know how much weight should a baby gain.

Find More About: Healthy Growth For Baby

Final Thoughts

In the end, it is important to know how much weight should a baby gain, and for this, you need to be an expert in that regard. If you are a new mother, then take your time and learn. You will come across a variety of tips related to how much weight a baby should gain.

Instead of getting worried about how to make baby gain weight, it is better to consult a pediatrician or a doctor first. As time goes on, you will get to know more about how much a baby weight gain by week. The above-mentioned article is a helpful source to know more about how much weight a baby should gain.

It is important to follow baby weight gain by month chart to discover more about what the progress is. Furthermore, experienced mothers can also provide you valuable tips related to how to help babies gain weight. Once you get familiar with the factors associated with baby weight gain by week, you can easily manage all the issues related to it.

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