Average Baby Weight and Length During the First Year

Average Baby Length Chart


50th Percentile
50th Percentile

1 Month
21 1/2 in (54.7 cm)
21 in (53. 7 cm)

2 Months
23 in (58.4 cm)
22 1/2 in (57.1 cm)

3 Months
24 1/4 in (61.4 cm)
23 1/2 in (59.8 cm)

4 Months
25 1/4 in (63.9 cm)
24 1/2 in (62.1 cm)

5 Months
26 in (65.9 cm)
25 1/4 in (64.0 cm)

6 Months
26 1/2 in (67.6 cm)
25 3/4 in (65.7 cm)

7 Months
27 1/4 in (69.2 cm)
26 1/2 in (67.3 cm)

8 Months
27 3/4 in (70.6 cm)
27 in (68.7 cm)

9 Months
28 1/4 in (72.0 cm)
27 1/2 in (70.1 cm)

10 Months
28 3/4 in (73.3 cm)
28 in (71.5 cm)

11 Months
29 1/4 in (74.5 cm)
28 1/2 in (72.8 cm)

12 Months
29 3/4 in (75.7 cm)
29 in (74.0 cm)

*Inches are rounded to the nearest 1/4 inch.

Growth Spurts

Infants do n’t grow at a reproducible rate. They have times when they grow slowly and times when they experience more rapid increase. A large scend of growth that occurs in a short period of prison term is known as a growth forge .

Growth spurts can happen at any time, and they do not necessarily follow a design. Some of the ages that your child may experience a growth spurt are at ten days, three weeks, six weeks, three months, and six months .

During and after a growth jet, your pamper will need more milk. You may need to feed your baby deoxyadenosine monophosphate much as every hour or two, a phenomenon much referred to as bunch feed .

This tends to happen more frequently with breastfed babies. Since front milk is made based on add and demand, your pamper will breastfeed much more much around the prison term of a growth forge, signaling your body to make more milk .

fortunately, these frequent feedings only last about a day or two as your milk supply adjusts to your growing child ‘s needs. After that, your child should settle back down into a more even feed act .

Growth Chart Considerations

Growth charts and percentiles are just tools that help track the growth of children over clock. The fiftieth percentile means average, not “ normal. ”

While some children fall on the average cable, many children fall below or above it. thus, if your baby is not in the fiftieth percentile, it surely does n’t mean that they are not growing at a healthy rate. healthy infants can be in the fifth percentile american samoa well as the 95th percentile .

While it may be tempting to compare your child ’ sulfur growth and development to early children, it is important to remember that babies come in all shapes and sizes .

Growth depends on many factors, including genetics, diet, and activity level. Every child grows at his or her own yard, and doctors look to make indisputable kids are on track for what is expected for them given their history. It ‘s unmanageable to compare one child to another, evening if they are brothers and sisters.

not All Growth Charts Are Equal

just as all children are different, it is significant to realize that not all growth charts are the same. The Centers for Disease Control and Prevention ( CDC ) provides a set of growth charts that include older data and information from a combination of feeding methods. The CDC emergence charts are a citation and show how children grew during a particular time period in the United States .

The World Health Organization ( WHO ) emergence charts contain more data from breastfed babies. Mothers are breastfeeding more and more and the WHO charts are considered a standard on how children should grow .

The CDC recommends using the WHO emergence charts for all babies ( whether they are breastfeeding or taking recipe ) during the foremost two years. The american Academy of Pediatrics ( APP ) agrees with the CDC recommendation.

A Word From Verywell

When you compare your child to other babies, you may worry if you notice that they are smaller or heavier than their peers. fortunately, there is an easy way to ease your fears and find out for certain if your child is growing as expected. You just have to follow the even agenda for well-child visits that your healthcare supplier gives you .

The doctor will weigh and measure your baby each prison term you see him. And, they will keep traverse of your child ‘s emergence and overall health over time. This will allow them to notice any diversions from your child ‘s expect growth, based on history, and address any potential concerns quickly, if applicable .

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