Baby Boy Growth Chart: Measurements To Track Height & Weight

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A baby boy growth chart can give you measurements of the growth standards of baby boys. This helps to track the growth of your baby compared to their peers. Each baby achieves growth and development at a different pace, and slight delays are not a cause for concern. Growth charts help you know if their development is within the average for their age. Read on to know more about a baby boy growth chart, how to understand a growth chart and what parameters are compared in an infant growth chart.

How Is Baby Boy Growth Measured?

When we talk about baby boy growth chart, we usually gauge it in the following broad categories (1):

  • Height
  • Weight
  • Other motor milestones such as sitting up independently, crawling, and walking with assistance.

Initially doctors are more concerned for the baby’s height and weight. While the height of a baby depends largely on his genes, it is very important to keep track of baby boy weight charts. Weight can tell whether a baby is able to digest food properly and is able to extract nutrition from it.

Child Growth Percentile Calculator

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Baby Growth Chart

A growth chart is essential to track your baby’s progress in accordance with his age. Though there is no ideal height and weight, there is a particular growth pattern that helps you assess your baby’s milestones.

Research finds
It has been discovered that newborns with low birth weight have a higher risk of developing specific mental health issues, starting in childhood and lasting at least into their 30s (10).

Boys and girls have different growth charts because both have different growth rates and patterns (2).

Baby Boy’s Growth Chart

The below chart provides you the measurement that ranges between 3rd and 97th percentile of the World Health Organization (WHO) growth standards for baby boys (3). If your baby boy falls within the right range, then it is said that your boy has the right height, weight, and head circumference at his age.

Months Length (cm)
3rd to 97th percentile
Weight (kg)
3rd to 97th percentile
Head circumference (cm)
3rd to 97th percentile
0 46.3 – 53.4 2.5 – 4.3 32.1 – 36.9
1 51.1 – 58.4 3.4 – 5.7 35.1 – 39.5
2 54.7 – 62.2 4.4 – 7.0 36.9 – 41.3
3 57.6 – 65.3 5.1 – 7.9 38.3 – 42.7
4 60.0 – 67.8 5.6 – 8.6 39.4 – 43.9
5 61.9 – 69.9 6.1 – 9.2 40.3 – 44.8
6 63.6 – 71.6 6.4 – 9.7 41.0 – 45.6
7 65.1 – 73.2 6.7 – 10.2 41.7 – 46.3
8 66.5 – 74.7 7.0 – 10.5 42.2 – 46.9
9 67.7 – 76.2 7.2 – 10.9 42.6 – 47.4
10 69.0 – 77.6 7.5 – 11.2 43.0 – 47.8
11 70.2 – 78.9 7.4 – 11.5 43.4 – 48.2
12 71.3 – 80.2 7.8 – 11.8 43.6 – 48.5

Source: WHO growth standards

The best way to keep a track of your baby boy height and weight is to take him for regular doctor checkups. Your child’s doctor will measure his height, weight and head circumference and will then compare them with the standard growth charts. You should use the below WHO charts to know his growth curve and percentile.

Do remember
Low oxygen levels, breathing difficulties, trouble keeping the body at the proper temperature, feeding difficulties, and an increased risk of infection are a few complications associated with low birth weight (11).

Weight for age:


Length for age:


Weight for length:


What Factors Can Influence Baby’s Growth?

Your baby boy’s growth rate depends partly on his body type and metabolism, and partly on his general health, feeding habits and the environment. The factors that have an influence include (4) (5) (6):

Feeding: Feeding provides your baby with the necessary nutrients he usually requires to grow. Until he is six months of age, he is dependent on breast milk for nutrition. The amount and duration of feeding affect his growth (7).


Your Health When You Were Pregnant: This can influence the store of nutrients your baby possesses when born. Your diet, lifestyle habits and weight can also have a significant influence on your child’s growth in his first year.

Birth Weight Of Your Baby: It indicates how well you have nourished your baby during pregnancy. But, babies born with high birth weight grow slowly, and babies born with low birth weight grow faster. It is also known as ‘catch-down’ or ‘catch-up’ growth (7).

Hereditary: Genes also play a significant role in baby’s growth. If both the parents are well-built and tall, your child is likely to be in a high percentile for height and weight. Likewise, if both parents are lean and short, even the baby might be lighter and of a short stature. For example, people from different cultures have different heights. People from the Netherlands are normally tall whereas people from India are normally less tall.

Minor Ailments: Illnesses like flu and ear infections have an effect on baby’s growth, but only temporary. He may not feel like drinking milk when he is ill, and this may affect his growth for a week or more. The growth returns to normal once he starts getting better.

Minor ailments can interrupt your baby boy's growth

Image: Shutterstock

Your Health After Pregnancy: If you suffer from postnatal depression or are unwell for any reason, it will be difficult for you to take care of your baby. This may ultimately affect his growth. However, it is not permanent and gets resolved once you recover.

When Should You Consult a Doctor?

Sometimes you may worry about the growth and development patterns of your children.

  • Some children who are short initially might grow a lot in the later stage
  • Some who grow rapidly, in the beginning, might slow down when they grow up.

Frequently Asked Questions

1. How do I read a baby growth chart?

According to the WHO, a baby growth chart is measured and read in percentiles. If a baby’s weight is in the 50th percentile, they are of average weight for babies of their age, i.e., 50% of the babies weigh more and the rest 50% weigh less. Similarly, if a baby’s weight is in the 90th percentile, they weigh more than 90% of the babies their age (8).

2. What happens if my baby’s growth pattern changes?

If your baby’s growth pattern seems to deviate drastically from the growth chart, it may indicate an underlying problem, such as a growth issue. Your pediatrician will help diagnose and provide appropriate treatment if needed (9).

The baby boy growth chart can help you check if your boy is thriving according to his age. While it’s not a good idea to rely simply on chart numbers to determine your child’s growth, because growth is influenced by a variety of factors that are unique to each baby, it’s also not a good idea to ignore any significant delays or deviations. If you notice any glaring difference in your child’s growth pattern, you may consult your child’s doctor to seek timely treatment and guidance.


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