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? Read on to know the answer to all these questions and more...
The growth pattern of children is very specific. Many parents, during the growing years of their child, all through infancy and till the tweens, tend to be very worried about the average child weight by age. This is an important determining factor when it comes to understanding whether the growth of the child is taking place at a normal rate. 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 infants weight is said to double 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 the weight of the child.
  • The health of the mother, especially during the pregnancy also has an effect on the child's weight.
  • The nutrition that the child is getting. It must meet all the minimal daily requirements when it comes to essential and non-essential nutrients.
  • 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
Given below is a chart that details the average weight of a child according to the age, along with the normal height of the child at that particular age:

Average Height and Weight For Boys
Age Average Height Average Weight
  in Inches in Pounds
Newborn 7.16
1 Month 9.15
2 Months 10.91
3 Months 12.56
4 Months 14
5 Months 15.43
6 Months 16.53
7 Months 17.64
8 Months 18.74
9 Months 19.62
10 Months 20.28
11 Months 21.05
1 year 28 - 29 22
13 Months 22.27
14 Months 22.82
15 Months 23.26
16 Months 23.7
17 Months 24.14
18 Months 24.58
19 Months 25.02
20 Months 25.35
21 Months 25.79
22 Months 26.12
23 Months 26.57
2 years 31 28.4
3 years 33 33
4 years 37 35 -37
5 years 40 41.8
6 years 42 46.2
7 years 44 50.6
8 years 45 57.2
9 years 49 61.6
10 years 51 70.4
11 years 52 77
12 - 13 years 58 - 62 85 - 100
14 - 15 years 63 - 66 105 - 125
16 - 17 years 67 - 70 130 - 150
18 - 20 years 68 - 70 150 - 160
Average Height and Weight For Girls
Age Average Height Average Weight
in Inches in Pounds
Neworn 7.16
1 Month 9.15
2 Months 10.91
3 Months 12.56
4 Months 14
5 Months 15.43
6 Months 16.53
7 Months 17.64
8 Months 18.74
9 Months 19.62
10 Months 20.28
11 Months 21.05
1 year 28 - 29 21.76
13 Months 22.27
14 Months 22.82
15 Months 23.26
16 Months 23.7
17 Months 24.14
18 Months 24.58
19 Months 25.02
20 Months 25.35
21 Months 25.79
22 Months 26.12
23 Months 26.57
2 year 30 28.4
3 year 33 30.8
4 year 37 35.2
5 year 40 39.6
6 year 41 46.2
7 year 43 50.6
8 year 45 57.2
9 year 47 63.8
10 year 51 70.4
11 year 52 79.2
12 - 13 years 60 - 63 95 - 105
14 - 15 years 63 - 64 105 - 115
16 - 17 years 64 115 - 120
18 - 20 years 64 125 - 130

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!
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Published: 3/18/2010
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