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AC Size Chart

Advice from a Caterpillar presents clothing and footwear from all over the world, which means that the sizing can vary drastically depending on each brand’s aesthetic and home country. Use the chart and general guidelines below as a starting point to find the right fit for your family. For personalized sizing advice, get in touch with us and we will be happy to help.

General Sizing Tips
  • Baby sizing generally grows by 3 month increments. Many brands do not use a 9 month size so we frequently go from 6 months to 12 months. This is due to the different growth patterns babies experience during this period. 
  • When buying for your own child, we recommend not buying too large. Many children have growth spurts at different times and it is much simpler to buy for the child not too far into the future. Often children pass sizes all together! Or the season does not correspond with their size.
  • Please note that the height designation for child apparel sizing is only an estimate and will not correspond to age accurately for every child. If in doubt, shop for the height of the child and don’t be concerned about the age designation.
  • We tend to sell shoes using European sizing as many are made in Europe and there is no definitive conversion standard between Euro and US sizing. We have made every effort to ensure accuracy, but the conversion below may be different to other stores. 

 

Baby and Child Apparel
Size Height
NB
50cm / 1' 7.5"
3M
56cm / 1' 10"
6M
62cm / 2'
9M
68cm / 2' 8"
12M
74cm / 2' 5"
18M
80cm / 2' 7.5"
2Y
92cm / 3'
3Y
98cm / 3' 2.5"
4Y
104cm / 3' 5"
5Y
110cm / 3' 7"
6Y
116cm / 3' 9.5"
8Y
128cm / 4' 2.5"
10Y
135cm / 4' 5"
12Y
141cm / 4' 7.5"
14Y
147cm / 4' 10"
16Y
153cm / 5'

 

Woman's Apparel
Size US Size
XS/34 2 - 4
S/36 6
M/38 8
L/40
10
XL/42 12

 

Baby and Child Shoes and Socks
Euro Shoe Size US Shoe Size Approximate Age
15 0 Newborn - 3 months
16 1 3 - 6 months
17 2 6 - 9 months
18 3
6 - 9 months
19 3.5
9 - 12 months
20 4 12 - 18 months
21 4.5 18 months - 2 years
22 5
18 months - 2 years
23 6
2 - 3 years
24 7
2 - 3 years
25 7.5 3 - 4 years
26 8
3 - 4 years
27 9
4 - 5 years
28 10
4 - 5 years
29 11 5 - 6 years
30 11.5
5 - 6 years
31 12 6 - 7 years
32 13
6 - 7 years
33 1 8 - 10 years
34 2
8 - 10 years
35 3 10 - 12 years

 

Adult Shoes and Socks
Euro Shoe Size US Women's Shoe Size US Child/Men's Size
36 W6 4
37 W7 5
38 W8 6
39 W9 7
40 W10 8
41 W11 9
42 W12 10