Average Child Weight by Age

Average Child Weight by Age

What is the average child weight by age? How do I know if my child's weight is right for his age? This AptParenting article provides answers to these questions.
The growth pattern of children is very specific. Many parents, during the growing years of their children, all through infancy and till the teens, tend to be very worried about the weight of their children. Knowing the average weight by age can help you know whether the growth of your child is taking place at a normal rate or not.
Children grow at different rates all through childhood till adulthood. After birth, it is normal for the weight of the child to drop by 5 - 10%. In the first few months, breast-fed babies can often be heavier than babies that are bottle fed, but this trend tends to reverse later in the first year. An infant's weight usually doubles between birth and five months, and increases three times by the age of 12 months or one year, and almost quadruples by the end of two years of age.
Factors Affecting Average Child Weight
There are many factors that affect the average child weight and height. These factors are:
The genetic composition of the child plays a vital role in determining his / her weight.
The health of the mother, especially during the pregnancy, also has an effect on the baby's weight.
The nutrients that the child is getting through his / her food determine his / her weight.
Any kind of illness afflicting the child will adversely affect the weight of the child. If the child suffers from a severe bout of diarrhea, or contracts typhoid fever, then his or her weight tends to drop all of a sudden.
Average Child Weight Chart
The following charts present the details about the average baby weight by age and average child weight by age, along with the normal height of the baby / child at that particular age. The figures in the charts represent averages, and should not be used as accurate indicators of child growth and health.
Average Height and Weight For Boys
Age Average Height Average Weight
in Inches in Pounds
Newborn 19.6 7.4
1 Month 21.6 9.8
2 Months 23.0 12.3
3 Months 24.2 14.1
4 Months 25.2 15.4
5 Months 26.0 16.6
6 Months 26.6 17.5
7 Months 27.2 18.3
8 Months 27.8 19.0
9 Months 28.3 19.6
10 Months 28.8 20.1
11 Months 29.3 20.8
1 year 29.8 21.3
13 Months 30.3 21.8
14 Months 30.7 22.3
15 Months 31.2 22.7
16 Months 31.6 23.2
17 Months 32.0 23.7
18 Months 32.4 24.1
19 Months 32.8 24.6
20 Months 33.1 25.0
21 Months 33.5 25.5
22 Months 33.9 25.9
23 Months 34.2 26.3
2 years 34.2 27.5
3 years 37.5 31
4 years 40.3 36.0
5 years 43.0 40.5
6 years 45.5 45.5
7 years 48.0 50.5
8 years 50.4 56.5
9 years 52.5 63.0
10 years 54.5 70.5
11 years 56.5 78.5
12 years 58.7 88.0
13 years 61.5 100.0
14 years 64.5 112.0
15 years 67.0 123.5
16 years 68.3 134.0
17 years 69.0 142.0
18 years 69.2 147.5
19 years 69.5 152.0
20 years 69.7 155.0


Average Height and Weight For Girls
Age Average Height Average Weight
in Inches in Pounds
Neworn 19.4 7.3
1 Month 21.2 9.6
2 Months 22.1 11.7
3 Months 23.6 13.3
4 Months 24.5 14.6
5 Months 25.3 15.8
6 Months 25.9 16.6
7 Months 26.5 17.4
8 Months 27.1 18.1
9 Months 27.6 18.8
10 Months 28.2 19.4
11 Months 28.7 19.9
1 year 29.2 20.4
13 Months 29.6 21,0
14 Months 30.1 21.5
15 Months 30.6 22.0
16 Months 30.9 22.5
17 Months 31.4 23.0
18 Months 31.8 23.4
19 Months 32.2 23.9
20 Months 32.6 24.4
21 Months 32.9 24.9
22 Months 33.4 25.4
23 Months 33.7 25.9
2 year 33.7 26.5
3 year 37 31.5
4 year 39.5 34.0
5 year 42.5 39.5
6 year 45.5 44.0
7 year 47.7 59.5
8 year 50.5 57.0
9 year 52.5 62.0
10 year 54.5 70.5
11 year 56.7 81.5
12 year 59.0 91.5
13 year 61.7 101.0
14 year 62.5 105.0
15 year 62.9 115.0
16 year 64.0 118.0
17 year 64.0 120.0
18 year 64.2 125.0
19 year 64.3 126.0
20 year 64.3 128.0

Source: The World Health Organization (WHO)

Many parents tend to get very worried if their child's weight is less than the average weight that children have at that particular age. However, one needs to understand that there are always exceptions, and that a little bit of deviation from what is considered normal is acceptable. In the end, stop worrying, and just enjoy the experience of parenthood!
Disclaimer: The information provided in this article is solely for educating the reader. It is not intended to be a substitute for the advice of a medical expert. 
Mother and newborn baby
Newborn Baby Being Weighed
A woman weighing herself on bathroom scales
BMI body mass index formula in a notepad
Happy smiling baby in pedrician office measuring weight
Newborn Baby Boy Lying On Bed
Sleeping Baby Girl
Newborn Baby Sleeping On A Blanket
Newborn Baby Sleeping Peacefully
Newborn Baby
Newborn Baby Boy On A Blanket