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Child growth by age: height and weight 0–6 years

Child growth by age: height and weight 0–6 years
Growth numbers can feel personal fast. A few pounds or inches on a chart can make parents wonder if they are feeding their child enough, doing something wrong, or missing a health concern. This guide is meant to be a calm reference, not a report card.

Use the age-by-age numbers below as a starting point for understanding common height and weight ranges from birth to age 6. Children grow at different speeds, and size can be shaped by sex, genetics, birth history, feeding, illness, sleep, activity, and the timing of growth spurts. What matters most is not a single number, but whether your child is growing steadily along their own curve — something your pediatrician can help confirm at regular check-ins.

 

 

For context, U.S. clinicians commonly use WHO growth standards for children from birth to age 2, then CDC growth charts from age 2 onward. If your child was born early, has a medical condition, recently lost weight, stopped gaining weight as expected, or suddenly shifted across percentile lines, it is worth checking in with your pediatrician.


Age

Boy
Girl

Length
Weight
Length
Weight
0M
44.9-54.9cm
17.7-21.6in
2.4-4.4kg
5.3-9.7lb
45.1-54.5cm
17.8-21.5in
2.4-4.3kg
5.3-9.5lb
1M
50.0-59.5cm
19.7-23.4in
3.2-5.5kg
7.0-12.1lb
49.4-58.4cm
19.5-23.0in
3.1-5.2kg
6.8-11.4lb
2M
53.6-63.0cm
21.1-24.8in
4.0-6.6kg
8.8-14.5lb
52.4-61.5cm
20.6-24.2in
3.7-6.1kg
8.1-13.4lb
3M
56.5-66.0cm
22.3-26.0in
4.7-7.6kg
10.3-16.7lb
54.7-64.0cm
21.6-25.2in
4.3-6.9kg
9.5-15.2lb
4M
58.8-68.3cm
23.2-26.9in
5.3-8.4kg
11.7-18.5lb
56.9-66.1cm
22.4-26.0in
4.8-7.6kg
10.6-16.7lb
5M
60.6-70.5cm
23.9-27.8in
5.8-9.2kg
12.8-20.2lb
58.7-68.1cm
23.1-26.8in
5.3-8.3kg
11.7-18.3lb
6M
62.5-72.3cm
24.6-28.5in
6.3-9.9kg
13.9-21.8lb
60.4-70.0cm
23.8-27.6in
5.7-8.9kg
12.5-19.6lb
7M
64.0-74.0cm
25.2-29.2in
6.8-10.5kg
15.0-23.1lb
62.0-71.8cm
24.4-28.3in
6.2-9.5kg
13.6-20.9lb
8M
65.5-75.7cm
25.8-29.8in
7.2-11.0kg
15.8-24.2lb
63.4-73.5cm
25.0-29.0in
6.5-10.0kg
14.3-22.0lb
9M
67.0-77.4cm
26.4-30.5in
7.5-11.5kg
16.5-25.3lb
64.8-75.0cm
25.5-29.6in
6.9-10.5kg
15.2-23.1lb
10M
68.2-78.5cm
26.9-30.9in
7.9-12.0kg
17.4-26.4lb
66.0-76.3cm
26.0-30.1in
7.2-10.9kg
15.8-24.0lb
11M
69.4-80.0cm
27.3-31.5in
8.1-12.4kg
17.8-27.3lb
67.1-77.8cm
26.4-30.7in
7.5-11.3kg
16.5-24.9lb
12M
70.4-81.4cm
27.7-32.1in
8.4-12.8kg
18.5-28.2lb
68.2-79.0cm
26.9-31.1in
7.8-11.7kg
17.2-25.7lb
1.5Y
76.0-88.1cm
29.9-34.7in
9.6-14.4kg
21.1-31.7lb
74.2-86.2cm
29.2-34.0in
9.1-13.5kg
20.0-29.7lb
2Y
79.9-93.0cm
31.5-36.6in
10.4-15.6kg
22.9-34.3lb
78.4-91.5cm
30.9-36.1in
10.0-15.0kg
22.0-33.0lb
2.5Y
84.0-98.0cm
33.1-38.6in
11.1-16.7kg
24.4-36.7lb
83.0-97.0cm
32.7-38.2in
10.7-16.4kg
23.5-36.1lb
3Y
88.0-102.5cm
34.7-40.4in
11.8-17.9kg
26.0-39.4lb
86.6-101.5cm
34.1-40.0in
11.3-17.9kg
24.9-39.4lb
3.5Y
91.4-106.5cm
36.0-42.0in
12.5-19.3kg
27.5-42.5lb
89.9-105.5cm
35.4-41.6in
12.0-19.5kg
26.4-42.9lb
4Y
94.2-110.2cm
37.1-43.3in
13.2-21.0kg
29.0-46.2lb
92.8-109.2cm
36.6-43.0in
12.8-21.0kg
28.2-46.2lb
4.5Y
97.1-113.8cm
38.3-44.8in
14.0-22.5kg
30.8-49.5lb
96.0-113.0cm
37.8-44.5in
13.5-23.0kg
29.7-50.6lb
5Y
100.0-117.5cm
39.4-46.3in
14.8-24.4kg
32.6-53.7lb
99.0-117.0cm
39.0-46.1in
14.2-24.9kg
31.2-54.8lb
5.5Y
103.0-121.0cm
40.6-47.7in
15.5-26.0kg
34.1-57.2lb
102.3-120.9cm
40.3-47.6in
15.1-26.8kg
33.2-59.0lb
6Y
105.9-125.0cm
41.7-49.4in
16.5-28.0kg
36.6-61.6lb
105.5-125.0cm
41.6-49.3in
16.0-28.8kg
35.2-63.4lb


🖇️References

[1] Centers for Disease Control and Prevention. (2024, September). WHO growth standards for use in US infants and children birth to 2 years.
[2] Centers for Disease Control and Prevention. (2024, September). CDC Growth Charts. 

 

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