Average Weight for Children by Age

Do you think that your child is underweight? Or are you worried because the child is overweight? This article provides charts on average weight for children by age. Being a responsible parent, it is absolutely natural to worry about the growth of your child. Scroll down and take a look at the charts, they might help relieve the tension.
FitnessVigil Staff
Last Updated: Jun 3, 2018
Height and weight measurements are good indicators of child's overall health. Parents are always worried about the health and growth of their kids, especially during the first five-ten years of age. But there cannot be a fixed rate of growth which can be applied to every child. When parents notice a wide variation in the height and weight of 'normal' children, they start worrying. Parents need to know that there doesn't exist any ideal weight for children as such. Growth of a child depends upon his/her diet, physical activities, overall health and genetic factors.
Growing Children and Weight
Average height, age and weight chart for children, available at any pediatric clinic can help you determine whether the growth rate of your child is normal or not. But, if you notice that your child weighs less than that shown in the chart, don't panic. These charts provide only guidelines about average weight for children by age.
Some children gain weight slowly while some gain weight very fast. The height and weight gain pattern may vary from kid to kid. In case of older children, body mass index helps know whether a child is growing properly. But with small kids, referring to the charts is the best way. Genetic factors, age, sex, nutrition, physical activity, health problems, environment and hormones, everything matters when it comes to growth (height and weight) of a child. The average weight gain for children also varies according to the factors mentioned above. Take a look at the following age and weight charts for children. You may compare your child's weight with the recommended weight at the given age. Remember, babies born premature are not taken into consideration here.
Average Weight for Children of Age 1 to 24 Months
Age Average Weight for Boys Average Weight for Girls
Newborn 7.16 lbs
(3.25 Kg)
7.16 lbs
(3.25 Kg)
1 Month 9.15 lbs
(4.15 Kg)
9.15 lbs
(4.15 Kg)
2 Month 10.91 lbs
(4.95 Kg)
10.91 lbs
(4.95 Kg)
3 Month 12.56 lbs
(5.70 Kg)
12.56 lbs
(5.70 Kg)
4 Month 14.00 lbs
(6.35 Kg)
14.00 lbs
(6.35 Kg)
5 Month 15.43 lbs
(6.70 Kg)
15.43 lbs
(6.70 Kg)
6 Month 16.53 lbs
(7.50 Kg)
16.53 lbs
(7.50 Kg)
7 Month 17.64 lbs
(8.00 Kg)
17.64 lbs
(8.00 Kg)
8 Month 18.74 lbs
(8.50 Kg)
18.74 lbs
(8.50 Kg)
9 Month 19.62 lbs
(8.90Kg)
19.62 lbs
(8.90Kg)
10 Month 20.28 lbs
(9.19 Kg)
20.28 lbs
(9.19 Kg)
11 Month 21.05 lbs
(9.55 Kg)
21.05 lbs
(9.55 Kg)
12 Month 22.00 lbs
(9.97 Kg)
21.76 lbs
(9.87 Kg)
13 Month 22.27 lbs
(10.10 Kg)
22.27 lbs
(10.10 Kg)
14 Month 23.26 lbs
(10.55 Kg)
23.26 lbs
(10.55 Kg)
15 Month 10.91 lbs
(4.95 Kg)
10.91 lbs
(4.95 Kg)
16 Month 23.70 lbs
(10.75 Kg)
23.70 lbs
(10.75 Kg)
17 Month 24.14 lbs
(10.95 Kg)
24.14 lbs
(10.95 Kg)
18 Month 24.58 lbs
(11.14 Kg)
24.58 lbs
(11.14 Kg)
19 Month 25.02 lbs
(11.35 Kg)
25.02 lbs
(11.35 Kg)
20 Month 25.35 lbs
(11.50 Kg)
25.35 lbs
(11.50 Kg)
21 Month 25.79 lbs
(11.70 Kg)
25.79 lbs
(11.70 Kg)
22 Month 26.12 lbs
(11.85 Kg)
26.12 lbs
(11.85 Kg)
23 Month 26.57 lbs
(12.05 Kg)
26.57 lbs
(12.05 Kg)
24 Month 28.40 lbs
(12.90 Kg)
28.40 lbs
(12.90 Kg)
Average Weight By Age for Children Belonging to the Age Group 1-20 Years
Age (Yrs.) Boys Girls
1 22.0 lbs
(9.97 Kg)
21.76 lbs
(9.87 Kg)
2 28.4 lbs
(12.88 Kg)
28.4 lbs
(12.88 Kg)
3 33.0 lbs
(14.97 Kg)
30.8 lbs
(13.97 Kg)
4 35-37 lbs
(15.87-16.78 Kg)
35.2 lbs
(15.97 Kg)
5 41.8 lbs
(18.97 Kg)
39.6 lbs
(17.97 Kg)
6 46.2 lbs
(20.95 Kg)
46.2 lbs
(20.95 Kg)
7 50.6 lbs
(22.95 Kg)
50.6 lbs
(22.95 Kg)
8 57.2 lbs
(25.95 Kg)
57.2 lbs
(25.95 Kg)
9 61.6 lbs
(27.95 Kg)
63.8 lbs
(28.93 Kg)
10 70.4 lbs
(31.93 Kg)
70.4 lbs
(31.93 Kg)
11 77.0 lbs
(34.92 Kg)
79.2 lbs
(35.92 Kg)
12-13 85-100 lbs
(38.55-45.35 Kg)
95-105 lbs
(43.10-47.62 Kg)
14-15 105-125 lbs
(47.62-56.70 Kg)
105-115 lbs
(47.62-52.16 Kg)
16-17 130-150 lbs
(58.97-68.03 Kg)
115-120 lbs
(52.16-54.43 Kg)
18-20 150-160 lbs
(68.03-72.57 Kg)
125-130 lbs
(56.70-58.97 Kg)
Suppose the weight of your 5 year old child matches the average weight for children of age 5. You find that your child grew along the same pattern as shown in the chart, up to 5 years of age, and then if you suddenly notice that the child is growing at a much slower rate than other kids, then you should consult your doctor and discuss the health of your child. But remember, no two children can grow at the same rate. As children approach adolescence, they generally gain and lose weight rapidly. Average weight for 12 year old kids can greatly vary from place to place, depending upon the genetic factors, physical activities of the children, nutrition, etc. American kids are usually taller than the Japanese kids of the same age. Growth rate for the Afro-Americans is different from that for the white Americans. Thus, genetics plays an important role in the physical growth of your kids. Adolescent girls usually undergo sudden changes in weight and height.
Childhood obesity is a constant concern today. Parents of older children may refer to the obesity chart. They should measure the weight and height of their children at regular time intervals. They should see to it that the kids don't sit in front of the idiot box munching potato chips all the time. They should encourage them for more physical activities and healthy diet. Healthy eating and sleeping habits promote healthy growth.