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Baby Size Chart Icon

Baby Size Chart

Find the ideal size for your little ones with our knit and crochet size standards chart, covering ages 3-24 months.

Baby Size Standards Diagram
*
Description
1
Head
Circumference of head
2
Neck
Circumference of neck
3
Chest
Fullest part of the chest circumference
4
Waist
Narrowest part of the torso circumference (approximately 1"{2.5cm above the navel} Narrowest part of the torso circumference (approximately 1"{2.5cm above the navel}
5
Hip
Hip circumference at the fullest part of the buttocks.
6
Armscye
Shoulder to underarm circumference
7
Upper Arm
Bicep circumference
8
Wrist
Circumference of the wrist
9
Center-back waist
Base of neck to waist along the spine length
10
Arm Hole Depth
Top of shoulder to underarm depth
11
Waist to hip (hip depth)
Waist to fullest part of the lower torso length
12
Cross back (shoulder-shoulder)
Shoulder bone to shoulder bone width at the back
13
Nape Length
Center-back spine to shoulder to wrist along the outside of the arm
14
Arm Length (to underarm)
Underarm to wrist on the inside of the arm length
15
Arm length from shoulder
Shoulder to wrist on the outside of the arm length
*
Unit
3 Mo
6 Mo
12 Mo
18 Mo
24 Mo
1
Head
in
16.5
17.5
18
18.5
19
1
Head
cm
42
44
46
47
48
2
Neck
in
8.5
9
9.25
9.5
9.75
2
Neck
cm
22
23
23
24
25
3
Chest
in
16
17
18
19
20
3
Chest
cm
41
43
46
48
51
4
Waist
in
18
19
20
20.5
21
4
Waist
cm
46
48
51
52
53
5
Hip
in
19
20
20
21
22
5
Hip
cm
48
51
51
53
56
6
Armscye
in
6.25
6.5
7.5
7.75
8.25
6
Armscye
cm
16
17
19
20
21
7
Upper Arm
in
5.5
6
6.5
7
7.5
7
Upper Arm
cm
14
15
17
18
19
8
Wrist
in
4.25
4.5
4.5
4.5
4.5
8
Wrist
cm
11
11
11
11
11
9
Center-back waist
in
6
7
7.5
8
8.5
9
Center-back waist
cm
15
18
19
20
22
10
Arm Hole Depth
in
3.25
3.5
3.75
4
4.25
10
Arm Hole Depth
cm
8
9
10
10
11
11
Waist to hip (hip depth)
in
2.25
2.75
3
3.25
3.25
11
Waist to hip (hip depth)
cm
6
7
8
8
8
12
Cross back (shoulder-shoulder)
in
7.25
7.75
8.25
8.5
8.75
12
Cross back (shoulder-shoulder)
cm
18
20
21
22
22
13
Nape Length
in
10.5
11.5
12.5
14
18
13
Nape Length
cm
27
29
32
36
46
14
Arm Length (to underarm)
in
6
6.5
7.5
8
8.5
14
Arm Length (to underarm)
cm
15
17
19
20
22
15
Arm length from shoulder
in
7.3
8.1
9.1
9.8
10.6
15
Arm length from shoulder
cm
19
21
23
25
27
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