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.