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A baby weight chart by month, birth to five years.

The full WHO weight tables for girls and boys, every month from birth to five years, in kilograms with pounds and ounces under each.

Want to plot your own baby’s weight? Try the free percentile calculator. No account needed.

The WHO tables

WHO weight-for-age chart for girls, birth to 5 years: the 3rd, 15th, 50th, 85th and 97th percentile curves, in kilograms and pounds.

What is the average weight for a baby girl by month?

The WHO median weight (50th percentile) for girls is 3.2 kg (7 lb 1 oz) at birth, 5.8 kg (12 lb 13 oz) at 3 months, 7.3 kg (16 lb 1 oz) at 6 months, 8.9 kg (19 lb 10 oz) at 12 months and 11.5 kg (25 lb 6 oz) at 24 months.

Age 3rd 15th 50th 85th 97th
Birth 2.4 kg 5 lb 5 oz 2.8 kg 6 lb 3 oz 3.2 kg 7 lb 1 oz 3.7 kg 8 lb 3 oz 4.2 kg 9 lb 4 oz
1 mo 3.2 kg 7 lb 1 oz 3.6 kg 7 lb 15 oz 4.2 kg 9 lb 4 oz 4.8 kg 10 lb 9 oz 5.4 kg 11 lb 14 oz
2 mo 4.0 kg 8 lb 13 oz 4.5 kg 9 lb 15 oz 5.1 kg 11 lb 4 oz 5.9 kg 13 lb 0 oz 6.5 kg 14 lb 5 oz
3 mo 4.6 kg 10 lb 2 oz 5.1 kg 11 lb 4 oz 5.8 kg 12 lb 13 oz 6.7 kg 14 lb 12 oz 7.4 kg 16 lb 5 oz
4 mo 5.1 kg 11 lb 4 oz 5.6 kg 12 lb 6 oz 6.4 kg 14 lb 2 oz 7.3 kg 16 lb 1 oz 8.1 kg 17 lb 14 oz
5 mo 5.5 kg 12 lb 2 oz 6.1 kg 13 lb 7 oz 6.9 kg 15 lb 3 oz 7.8 kg 17 lb 3 oz 8.7 kg 19 lb 3 oz
6 mo 5.8 kg 12 lb 13 oz 6.4 kg 14 lb 2 oz 7.3 kg 16 lb 1 oz 8.3 kg 18 lb 5 oz 9.2 kg 20 lb 5 oz
7 mo 6.1 kg 13 lb 7 oz 6.7 kg 14 lb 12 oz 7.6 kg 16 lb 12 oz 8.7 kg 19 lb 3 oz 9.6 kg 21 lb 3 oz
8 mo 6.3 kg 13 lb 14 oz 7.0 kg 15 lb 7 oz 7.9 kg 17 lb 7 oz 9.0 kg 19 lb 13 oz 10.0 kg 22 lb 1 oz
9 mo 6.6 kg 14 lb 9 oz 7.3 kg 16 lb 1 oz 8.2 kg 18 lb 1 oz 9.3 kg 20 lb 8 oz 10.4 kg 22 lb 15 oz
10 mo 6.8 kg 15 lb 0 oz 7.5 kg 16 lb 9 oz 8.5 kg 18 lb 12 oz 9.6 kg 21 lb 3 oz 10.7 kg 23 lb 9 oz
11 mo 7.0 kg 15 lb 7 oz 7.7 kg 17 lb 0 oz 8.7 kg 19 lb 3 oz 9.9 kg 21 lb 13 oz 11.0 kg 24 lb 4 oz
12 mo 7.1 kg 15 lb 10 oz 7.9 kg 17 lb 7 oz 8.9 kg 19 lb 10 oz 10.2 kg 22 lb 8 oz 11.3 kg 24 lb 15 oz
13 mo 7.3 kg 16 lb 1 oz 8.1 kg 17 lb 14 oz 9.2 kg 20 lb 5 oz 10.4 kg 22 lb 15 oz 11.6 kg 25 lb 9 oz
14 mo 7.5 kg 16 lb 9 oz 8.3 kg 18 lb 5 oz 9.4 kg 20 lb 12 oz 10.7 kg 23 lb 9 oz 11.9 kg 26 lb 4 oz
15 mo 7.7 kg 17 lb 0 oz 8.5 kg 18 lb 12 oz 9.6 kg 21 lb 3 oz 10.9 kg 24 lb 0 oz 12.2 kg 26 lb 14 oz
16 mo 7.8 kg 17 lb 3 oz 8.7 kg 19 lb 3 oz 9.8 kg 21 lb 10 oz 11.2 kg 24 lb 11 oz 12.5 kg 27 lb 9 oz
17 mo 8.0 kg 17 lb 10 oz 8.8 kg 19 lb 6 oz 10.0 kg 22 lb 1 oz 11.4 kg 25 lb 2 oz 12.7 kg 28 lb 0 oz
18 mo 8.2 kg 18 lb 1 oz 9.0 kg 19 lb 13 oz 10.2 kg 22 lb 8 oz 11.6 kg 25 lb 9 oz 13.0 kg 28 lb 11 oz
19 mo 8.3 kg 18 lb 5 oz 9.2 kg 20 lb 5 oz 10.4 kg 22 lb 15 oz 11.9 kg 26 lb 4 oz 13.3 kg 29 lb 5 oz
20 mo 8.5 kg 18 lb 12 oz 9.4 kg 20 lb 12 oz 10.6 kg 23 lb 6 oz 12.1 kg 26 lb 11 oz 13.5 kg 29 lb 12 oz
21 mo 8.7 kg 19 lb 3 oz 9.6 kg 21 lb 3 oz 10.9 kg 24 lb 0 oz 12.4 kg 27 lb 5 oz 13.8 kg 30 lb 7 oz
22 mo 8.8 kg 19 lb 6 oz 9.8 kg 21 lb 10 oz 11.1 kg 24 lb 8 oz 12.6 kg 27 lb 12 oz 14.1 kg 31 lb 1 oz
23 mo 9.0 kg 19 lb 13 oz 9.9 kg 21 lb 13 oz 11.3 kg 24 lb 15 oz 12.8 kg 28 lb 4 oz 14.3 kg 31 lb 8 oz
24 mo 9.2 kg 20 lb 5 oz 10.1 kg 22 lb 4 oz 11.5 kg 25 lb 6 oz 13.1 kg 28 lb 14 oz 14.6 kg 32 lb 3 oz
25 mo 9.3 kg 20 lb 8 oz 10.3 kg 22 lb 11 oz 11.7 kg 25 lb 13 oz 13.3 kg 29 lb 5 oz 14.9 kg 32 lb 14 oz
26 mo 9.5 kg 20 lb 15 oz 10.5 kg 23 lb 2 oz 11.9 kg 26 lb 4 oz 13.6 kg 30 lb 0 oz 15.2 kg 33 lb 8 oz
27 mo 9.6 kg 21 lb 3 oz 10.7 kg 23 lb 9 oz 12.1 kg 26 lb 11 oz 13.8 kg 30 lb 7 oz 15.4 kg 33 lb 15 oz
28 mo 9.8 kg 21 lb 10 oz 10.8 kg 23 lb 13 oz 12.3 kg 27 lb 2 oz 14.0 kg 30 lb 14 oz 15.7 kg 34 lb 10 oz
29 mo 10.0 kg 22 lb 1 oz 11.0 kg 24 lb 4 oz 12.5 kg 27 lb 9 oz 14.3 kg 31 lb 8 oz 16.0 kg 35 lb 4 oz
30 mo 10.1 kg 22 lb 4 oz 11.2 kg 24 lb 11 oz 12.7 kg 28 lb 0 oz 14.5 kg 31 lb 15 oz 16.2 kg 35 lb 11 oz
31 mo 10.3 kg 22 lb 11 oz 11.3 kg 24 lb 15 oz 12.9 kg 28 lb 7 oz 14.7 kg 32 lb 7 oz 16.5 kg 36 lb 6 oz
32 mo 10.4 kg 22 lb 15 oz 11.5 kg 25 lb 6 oz 13.1 kg 28 lb 14 oz 15.0 kg 33 lb 1 oz 16.8 kg 37 lb 1 oz
33 mo 10.5 kg 23 lb 2 oz 11.7 kg 25 lb 13 oz 13.3 kg 29 lb 5 oz 15.2 kg 33 lb 8 oz 17.0 kg 37 lb 8 oz
34 mo 10.7 kg 23 lb 9 oz 11.8 kg 26 lb 0 oz 13.5 kg 29 lb 12 oz 15.4 kg 33 lb 15 oz 17.3 kg 38 lb 2 oz
35 mo 10.8 kg 23 lb 13 oz 12.0 kg 26 lb 7 oz 13.7 kg 30 lb 3 oz 15.7 kg 34 lb 10 oz 17.6 kg 38 lb 13 oz
36 mo 11.0 kg 24 lb 4 oz 12.1 kg 26 lb 11 oz 13.9 kg 30 lb 10 oz 15.9 kg 35 lb 1 oz 17.8 kg 39 lb 4 oz
37 mo 11.1 kg 24 lb 8 oz 12.3 kg 27 lb 2 oz 14.0 kg 30 lb 14 oz 16.1 kg 35 lb 8 oz 18.1 kg 39 lb 14 oz
38 mo 11.2 kg 24 lb 11 oz 12.5 kg 27 lb 9 oz 14.2 kg 31 lb 5 oz 16.3 kg 35 lb 15 oz 18.4 kg 40 lb 9 oz
39 mo 11.4 kg 25 lb 2 oz 12.6 kg 27 lb 12 oz 14.4 kg 31 lb 12 oz 16.6 kg 36 lb 10 oz 18.6 kg 41 lb 0 oz
40 mo 11.5 kg 25 lb 6 oz 12.8 kg 28 lb 4 oz 14.6 kg 32 lb 3 oz 16.8 kg 37 lb 1 oz 18.9 kg 41 lb 11 oz
41 mo 11.6 kg 25 lb 9 oz 12.9 kg 28 lb 7 oz 14.8 kg 32 lb 10 oz 17.0 kg 37 lb 8 oz 19.2 kg 42 lb 5 oz
42 mo 11.8 kg 26 lb 0 oz 13.1 kg 28 lb 14 oz 15.0 kg 33 lb 1 oz 17.3 kg 38 lb 2 oz 19.5 kg 43 lb 0 oz
43 mo 11.9 kg 26 lb 4 oz 13.2 kg 29 lb 2 oz 15.2 kg 33 lb 8 oz 17.5 kg 38 lb 9 oz 19.7 kg 43 lb 7 oz
44 mo 12.0 kg 26 lb 7 oz 13.4 kg 29 lb 9 oz 15.3 kg 33 lb 12 oz 17.7 kg 39 lb 0 oz 20.0 kg 44 lb 1 oz
45 mo 12.1 kg 26 lb 11 oz 13.5 kg 29 lb 12 oz 15.5 kg 34 lb 3 oz 17.9 kg 39 lb 7 oz 20.3 kg 44 lb 12 oz
46 mo 12.3 kg 27 lb 2 oz 13.7 kg 30 lb 3 oz 15.7 kg 34 lb 10 oz 18.2 kg 40 lb 2 oz 20.6 kg 45 lb 7 oz
47 mo 12.4 kg 27 lb 5 oz 13.8 kg 30 lb 7 oz 15.9 kg 35 lb 1 oz 18.4 kg 40 lb 9 oz 20.8 kg 45 lb 14 oz
48 mo 12.5 kg 27 lb 9 oz 14.0 kg 30 lb 14 oz 16.1 kg 35 lb 8 oz 18.6 kg 41 lb 0 oz 21.1 kg 46 lb 8 oz
49 mo 12.6 kg 27 lb 12 oz 14.1 kg 31 lb 1 oz 16.3 kg 35 lb 15 oz 18.9 kg 41 lb 11 oz 21.4 kg 47 lb 3 oz
50 mo 12.8 kg 28 lb 4 oz 14.3 kg 31 lb 8 oz 16.4 kg 36 lb 2 oz 19.1 kg 42 lb 2 oz 21.7 kg 47 lb 13 oz
51 mo 12.9 kg 28 lb 7 oz 14.4 kg 31 lb 12 oz 16.6 kg 36 lb 10 oz 19.3 kg 42 lb 9 oz 22.0 kg 48 lb 8 oz
52 mo 13.0 kg 28 lb 11 oz 14.5 kg 31 lb 15 oz 16.8 kg 37 lb 1 oz 19.5 kg 43 lb 0 oz 22.2 kg 48 lb 15 oz
53 mo 13.1 kg 28 lb 14 oz 14.7 kg 32 lb 7 oz 17.0 kg 37 lb 8 oz 19.8 kg 43 lb 10 oz 22.5 kg 49 lb 10 oz
54 mo 13.2 kg 29 lb 2 oz 14.8 kg 32 lb 10 oz 17.2 kg 37 lb 15 oz 20.0 kg 44 lb 1 oz 22.8 kg 50 lb 4 oz
55 mo 13.4 kg 29 lb 9 oz 15.0 kg 33 lb 1 oz 17.3 kg 38 lb 2 oz 20.2 kg 44 lb 9 oz 23.1 kg 50 lb 15 oz
56 mo 13.5 kg 29 lb 12 oz 15.1 kg 33 lb 5 oz 17.5 kg 38 lb 9 oz 20.4 kg 45 lb 0 oz 23.3 kg 51 lb 6 oz
57 mo 13.6 kg 30 lb 0 oz 15.3 kg 33 lb 12 oz 17.7 kg 39 lb 0 oz 20.7 kg 45 lb 10 oz 23.6 kg 52 lb 0 oz
58 mo 13.7 kg 30 lb 3 oz 15.4 kg 33 lb 15 oz 17.9 kg 39 lb 7 oz 20.9 kg 46 lb 1 oz 23.9 kg 52 lb 11 oz
59 mo 13.8 kg 30 lb 7 oz 15.5 kg 34 lb 3 oz 18.0 kg 39 lb 11 oz 21.1 kg 46 lb 8 oz 24.2 kg 53 lb 6 oz
60 mo 14.0 kg 30 lb 14 oz 15.7 kg 34 lb 10 oz 18.2 kg 40 lb 2 oz 21.3 kg 46 lb 15 oz 24.4 kg 53 lb 13 oz

Weight-for-age, girls, birth to 60 months, in kilograms, with pounds and ounces under each. Source: WHO Child Growth Standards.

Rather not squint at a table? Log each weigh-in in Bundle of Joy and it lands on the WHO chart for you, with the percentile.

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WHO weight-for-age chart for boys, birth to 5 years: the 3rd, 15th, 50th, 85th and 97th percentile curves, in kilograms and pounds.

What is the average weight for a baby boy by month?

The WHO median weight (50th percentile) for boys is 3.3 kg (7 lb 4 oz) at birth, 6.4 kg (14 lb 2 oz) at 3 months, 7.9 kg (17 lb 7 oz) at 6 months, 9.6 kg (21 lb 3 oz) at 12 months and 12.2 kg (26 lb 14 oz) at 24 months.

Age 3rd 15th 50th 85th 97th
Birth 2.5 kg 5 lb 8 oz 2.9 kg 6 lb 6 oz 3.3 kg 7 lb 4 oz 3.9 kg 8 lb 10 oz 4.3 kg 9 lb 8 oz
1 mo 3.4 kg 7 lb 8 oz 3.9 kg 8 lb 10 oz 4.5 kg 9 lb 15 oz 5.1 kg 11 lb 4 oz 5.7 kg 12 lb 9 oz
2 mo 4.4 kg 9 lb 11 oz 4.9 kg 10 lb 13 oz 5.6 kg 12 lb 6 oz 6.3 kg 13 lb 14 oz 7.0 kg 15 lb 7 oz
3 mo 5.1 kg 11 lb 4 oz 5.6 kg 12 lb 6 oz 6.4 kg 14 lb 2 oz 7.2 kg 15 lb 14 oz 7.9 kg 17 lb 7 oz
4 mo 5.6 kg 12 lb 6 oz 6.2 kg 13 lb 11 oz 7.0 kg 15 lb 7 oz 7.9 kg 17 lb 7 oz 8.6 kg 18 lb 15 oz
5 mo 6.1 kg 13 lb 7 oz 6.7 kg 14 lb 12 oz 7.5 kg 16 lb 9 oz 8.4 kg 18 lb 8 oz 9.2 kg 20 lb 5 oz
6 mo 6.4 kg 14 lb 2 oz 7.1 kg 15 lb 10 oz 7.9 kg 17 lb 7 oz 8.9 kg 19 lb 10 oz 9.7 kg 21 lb 6 oz
7 mo 6.7 kg 14 lb 12 oz 7.4 kg 16 lb 5 oz 8.3 kg 18 lb 5 oz 9.3 kg 20 lb 8 oz 10.2 kg 22 lb 8 oz
8 mo 7.0 kg 15 lb 7 oz 7.7 kg 17 lb 0 oz 8.6 kg 18 lb 15 oz 9.6 kg 21 lb 3 oz 10.5 kg 23 lb 2 oz
9 mo 7.2 kg 15 lb 14 oz 7.9 kg 17 lb 7 oz 8.9 kg 19 lb 10 oz 10.0 kg 22 lb 1 oz 10.9 kg 24 lb 0 oz
10 mo 7.5 kg 16 lb 9 oz 8.2 kg 18 lb 1 oz 9.2 kg 20 lb 5 oz 10.3 kg 22 lb 11 oz 11.2 kg 24 lb 11 oz
11 mo 7.7 kg 17 lb 0 oz 8.4 kg 18 lb 8 oz 9.4 kg 20 lb 12 oz 10.5 kg 23 lb 2 oz 11.5 kg 25 lb 6 oz
12 mo 7.8 kg 17 lb 3 oz 8.6 kg 18 lb 15 oz 9.6 kg 21 lb 3 oz 10.8 kg 23 lb 13 oz 11.8 kg 26 lb 0 oz
13 mo 8.0 kg 17 lb 10 oz 8.8 kg 19 lb 6 oz 9.9 kg 21 lb 13 oz 11.1 kg 24 lb 8 oz 12.1 kg 26 lb 11 oz
14 mo 8.2 kg 18 lb 1 oz 9.0 kg 19 lb 13 oz 10.1 kg 22 lb 4 oz 11.3 kg 24 lb 15 oz 12.4 kg 27 lb 5 oz
15 mo 8.4 kg 18 lb 8 oz 9.2 kg 20 lb 5 oz 10.3 kg 22 lb 11 oz 11.6 kg 25 lb 9 oz 12.7 kg 28 lb 0 oz
16 mo 8.5 kg 18 lb 12 oz 9.4 kg 20 lb 12 oz 10.5 kg 23 lb 2 oz 11.8 kg 26 lb 0 oz 12.9 kg 28 lb 7 oz
17 mo 8.7 kg 19 lb 3 oz 9.6 kg 21 lb 3 oz 10.7 kg 23 lb 9 oz 12.0 kg 26 lb 7 oz 13.2 kg 29 lb 2 oz
18 mo 8.9 kg 19 lb 10 oz 9.7 kg 21 lb 6 oz 10.9 kg 24 lb 0 oz 12.3 kg 27 lb 2 oz 13.5 kg 29 lb 12 oz
19 mo 9.0 kg 19 lb 13 oz 9.9 kg 21 lb 13 oz 11.1 kg 24 lb 8 oz 12.5 kg 27 lb 9 oz 13.7 kg 30 lb 3 oz
20 mo 9.2 kg 20 lb 5 oz 10.1 kg 22 lb 4 oz 11.3 kg 24 lb 15 oz 12.7 kg 28 lb 0 oz 14.0 kg 30 lb 14 oz
21 mo 9.3 kg 20 lb 8 oz 10.3 kg 22 lb 11 oz 11.5 kg 25 lb 6 oz 13.0 kg 28 lb 11 oz 14.3 kg 31 lb 8 oz
22 mo 9.5 kg 20 lb 15 oz 10.5 kg 23 lb 2 oz 11.8 kg 26 lb 0 oz 13.2 kg 29 lb 2 oz 14.5 kg 31 lb 15 oz
23 mo 9.7 kg 21 lb 6 oz 10.6 kg 23 lb 6 oz 12.0 kg 26 lb 7 oz 13.4 kg 29 lb 9 oz 14.8 kg 32 lb 10 oz
24 mo 9.8 kg 21 lb 10 oz 10.8 kg 23 lb 13 oz 12.2 kg 26 lb 14 oz 13.7 kg 30 lb 3 oz 15.1 kg 33 lb 5 oz
25 mo 10.0 kg 22 lb 1 oz 11.0 kg 24 lb 4 oz 12.4 kg 27 lb 5 oz 13.9 kg 30 lb 10 oz 15.3 kg 33 lb 12 oz
26 mo 10.1 kg 22 lb 4 oz 11.1 kg 24 lb 8 oz 12.5 kg 27 lb 9 oz 14.1 kg 31 lb 1 oz 15.6 kg 34 lb 6 oz
27 mo 10.2 kg 22 lb 8 oz 11.3 kg 24 lb 15 oz 12.7 kg 28 lb 0 oz 14.4 kg 31 lb 12 oz 15.9 kg 35 lb 1 oz
28 mo 10.4 kg 22 lb 15 oz 11.5 kg 25 lb 6 oz 12.9 kg 28 lb 7 oz 14.6 kg 32 lb 3 oz 16.1 kg 35 lb 8 oz
29 mo 10.5 kg 23 lb 2 oz 11.6 kg 25 lb 9 oz 13.1 kg 28 lb 14 oz 14.8 kg 32 lb 10 oz 16.4 kg 36 lb 2 oz
30 mo 10.7 kg 23 lb 9 oz 11.8 kg 26 lb 0 oz 13.3 kg 29 lb 5 oz 15.0 kg 33 lb 1 oz 16.6 kg 36 lb 10 oz
31 mo 10.8 kg 23 lb 13 oz 11.9 kg 26 lb 4 oz 13.5 kg 29 lb 12 oz 15.2 kg 33 lb 8 oz 16.9 kg 37 lb 4 oz
32 mo 10.9 kg 24 lb 0 oz 12.1 kg 26 lb 11 oz 13.7 kg 30 lb 3 oz 15.5 kg 34 lb 3 oz 17.1 kg 37 lb 11 oz
33 mo 11.1 kg 24 lb 8 oz 12.2 kg 26 lb 14 oz 13.8 kg 30 lb 7 oz 15.7 kg 34 lb 10 oz 17.3 kg 38 lb 2 oz
34 mo 11.2 kg 24 lb 11 oz 12.4 kg 27 lb 5 oz 14.0 kg 30 lb 14 oz 15.9 kg 35 lb 1 oz 17.6 kg 38 lb 13 oz
35 mo 11.3 kg 24 lb 15 oz 12.5 kg 27 lb 9 oz 14.2 kg 31 lb 5 oz 16.1 kg 35 lb 8 oz 17.8 kg 39 lb 4 oz
36 mo 11.4 kg 25 lb 2 oz 12.7 kg 28 lb 0 oz 14.3 kg 31 lb 8 oz 16.3 kg 35 lb 15 oz 18.0 kg 39 lb 11 oz
37 mo 11.6 kg 25 lb 9 oz 12.8 kg 28 lb 4 oz 14.5 kg 31 lb 15 oz 16.5 kg 36 lb 6 oz 18.3 kg 40 lb 6 oz
38 mo 11.7 kg 25 lb 13 oz 12.9 kg 28 lb 7 oz 14.7 kg 32 lb 7 oz 16.7 kg 36 lb 13 oz 18.5 kg 40 lb 13 oz
39 mo 11.8 kg 26 lb 0 oz 13.1 kg 28 lb 14 oz 14.8 kg 32 lb 10 oz 16.9 kg 37 lb 4 oz 18.7 kg 41 lb 4 oz
40 mo 11.9 kg 26 lb 4 oz 13.2 kg 29 lb 2 oz 15.0 kg 33 lb 1 oz 17.1 kg 37 lb 11 oz 19.0 kg 41 lb 14 oz
41 mo 12.1 kg 26 lb 11 oz 13.4 kg 29 lb 9 oz 15.2 kg 33 lb 8 oz 17.3 kg 38 lb 2 oz 19.2 kg 42 lb 5 oz
42 mo 12.2 kg 26 lb 14 oz 13.5 kg 29 lb 12 oz 15.3 kg 33 lb 12 oz 17.5 kg 38 lb 9 oz 19.4 kg 42 lb 12 oz
43 mo 12.3 kg 27 lb 2 oz 13.6 kg 30 lb 0 oz 15.5 kg 34 lb 3 oz 17.7 kg 39 lb 0 oz 19.7 kg 43 lb 7 oz
44 mo 12.4 kg 27 lb 5 oz 13.8 kg 30 lb 7 oz 15.7 kg 34 lb 10 oz 17.9 kg 39 lb 7 oz 19.9 kg 43 lb 14 oz
45 mo 12.5 kg 27 lb 9 oz 13.9 kg 30 lb 10 oz 15.8 kg 34 lb 13 oz 18.1 kg 39 lb 14 oz 20.1 kg 44 lb 5 oz
46 mo 12.7 kg 28 lb 0 oz 14.1 kg 31 lb 1 oz 16.0 kg 35 lb 4 oz 18.3 kg 40 lb 6 oz 20.4 kg 45 lb 0 oz
47 mo 12.8 kg 28 lb 4 oz 14.2 kg 31 lb 5 oz 16.2 kg 35 lb 11 oz 18.5 kg 40 lb 13 oz 20.6 kg 45 lb 7 oz
48 mo 12.9 kg 28 lb 7 oz 14.3 kg 31 lb 8 oz 16.3 kg 35 lb 15 oz 18.7 kg 41 lb 4 oz 20.9 kg 46 lb 1 oz
49 mo 13.0 kg 28 lb 11 oz 14.5 kg 31 lb 15 oz 16.5 kg 36 lb 6 oz 18.9 kg 41 lb 11 oz 21.1 kg 46 lb 8 oz
50 mo 13.1 kg 28 lb 14 oz 14.6 kg 32 lb 3 oz 16.7 kg 36 lb 13 oz 19.1 kg 42 lb 2 oz 21.3 kg 46 lb 15 oz
51 mo 13.3 kg 29 lb 5 oz 14.7 kg 32 lb 7 oz 16.8 kg 37 lb 1 oz 19.3 kg 42 lb 9 oz 21.6 kg 47 lb 10 oz
52 mo 13.4 kg 29 lb 9 oz 14.9 kg 32 lb 14 oz 17.0 kg 37 lb 8 oz 19.5 kg 43 lb 0 oz 21.8 kg 48 lb 1 oz
53 mo 13.5 kg 29 lb 12 oz 15.0 kg 33 lb 1 oz 17.2 kg 37 lb 15 oz 19.7 kg 43 lb 7 oz 22.1 kg 48 lb 12 oz
54 mo 13.6 kg 30 lb 0 oz 15.2 kg 33 lb 8 oz 17.3 kg 38 lb 2 oz 19.9 kg 43 lb 14 oz 22.3 kg 49 lb 3 oz
55 mo 13.7 kg 30 lb 3 oz 15.3 kg 33 lb 12 oz 17.5 kg 38 lb 9 oz 20.1 kg 44 lb 5 oz 22.5 kg 49 lb 10 oz
56 mo 13.8 kg 30 lb 7 oz 15.4 kg 33 lb 15 oz 17.7 kg 39 lb 0 oz 20.3 kg 44 lb 12 oz 22.8 kg 50 lb 4 oz
57 mo 13.9 kg 30 lb 10 oz 15.6 kg 34 lb 6 oz 17.8 kg 39 lb 4 oz 20.5 kg 45 lb 3 oz 23.0 kg 50 lb 11 oz
58 mo 14.1 kg 31 lb 1 oz 15.7 kg 34 lb 10 oz 18.0 kg 39 lb 11 oz 20.7 kg 45 lb 10 oz 23.3 kg 51 lb 6 oz
59 mo 14.2 kg 31 lb 5 oz 15.8 kg 34 lb 13 oz 18.2 kg 40 lb 2 oz 20.9 kg 46 lb 1 oz 23.5 kg 51 lb 13 oz
60 mo 14.3 kg 31 lb 8 oz 16.0 kg 35 lb 4 oz 18.3 kg 40 lb 6 oz 21.1 kg 46 lb 8 oz 23.8 kg 52 lb 8 oz

Weight-for-age, boys, birth to 60 months, in kilograms, with pounds and ounces under each. Source: WHO Child Growth Standards.

What does a weight percentile mean?

Picture a hundred children the same age from the WHO reference, girls with girls and boys with boys. A baby on the 50th percentile for weight is heavier than half of them and lighter than the other half. A baby on the 15th is above fifteen of them.

The 50th is the median. That’s usually what people mean by the average for an age. It’s the middle, not a target. If a number worries you, ask your pediatrician. They know the rest of the picture.

There’s also the height chart and the head circumference chart.

Keep every measurement in one place.

Weight, length and head circumference on the WHO charts, shared with your partner.

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