Size 4C: the kids’ shoe size explained
A size 4C fits a foot of 11.2 to 11.6 cm (4.42 to 4.58 in): UK 3.5–4 and EU 19–19.5 by the standard size tables, a toddler size.
The median child’s foot reaches the middle of a 4C at about 13 months and stays in it for about 2 months, in the US Consumer Product Safety Commission’s survey of children.
Where 4C sits
After 4C: the next sizes
The next size, 4.5C, fits 4.2 mm more foot, up to 12.1 cm. Around the age a 4C is outgrown the median child’s foot grows about 1.1 mm a month, so it fills a 4.5C about 4 months later.
| Size | Foot (cm) | UK | EU | Outgrown at |
|---|---|---|---|---|
| 4C (this size) | 11.2–11.6 | 3.5–4 | 19–19.5 | about 14 months |
| 4.5C | 11.6–12.1 | 4–4.5 | 19.5–20.5 | about 18 months |
| 5C | 12.1–12.5 | 4.5–5 | 20.5–21 | about 22 months |
Outgrown at: when the median child’s foot reaches the top of the size, girls and boys together. Half of children get there sooner.
What 11 brands print for a 4C
On the brands’ own charts a 4C is for a foot of up to 10.0 cm (Under Armour) to 11.7 cm (UGG); the standard is 11.6 cm. Check the brand’s chart before you buy.
| Brand | Prints | UK | EU | Foot up to |
|---|---|---|---|---|
| Under Armour size chart (opens the brand’s site) | 4K | 3.5 | 19.5 | 10.0 cm |
| Vans size chart (opens the brand’s site) | 4C | 3.5 | 19 | 10.5 cm |
| adidas size chart (opens the brand’s site) | 4k | 3k | 19 | 10.6 cm |
| Crocs size chart (opens the brand’s site) | C4 | 4 | 19-20 | 11.5 cm |
| Teva size chart (opens the brand’s site) | 4T | 3 | 19 | 11.5 cm |
| Jordan size chart (opens the brand’s site) | 4C | 3.5 | 19.5 | 11.6 cm |
| Nike size chart (opens the brand’s site) | 4C | 3.5 | 19.5 | 11.6 cm |
| UGG size chart (opens the brand’s site) | 4T | 3.5 | 19.5 | 11.7 cm |
| Converse size chart (opens the brand’s site) | 4C | 4 | 20 | — |
| Liberty size chart (opens the brand’s site) | 4C | 3C | 19 | — |
| Onitsuka Tiger size chart (opens the brand’s site) | K4 | K3 | 19.5 | — |
Each brand’s own kids’ chart, linked, as it prints the size; “—” where the chart has no such column. Brands that don’t print foot lengths are listed last. Not affiliated with any brand.
Convert another kids’ size
4C in every system
| System | 4C |
|---|---|
| Foot length (cm) | 11.2–11.6 |
| Foot length (in) | 4.42–4.58 |
| UK | 3.5–4 |
| EU | 19–19.5 |
| Japan (cm) | 11.5–12 |
| Mondopoint (mm) | 115–120 |
From the standard size tables; where the foot range spans more than one size, the first and last are shown.
Size tables checked 2026-10-23; ages from the CPSC children’s survey (Snyder et al., 1977, via NIST AnthroKids), median of girls and boys; brand sizes from each brand’s own chart, linked above. An estimate to help you choose: fit varies by brand and model. Not medical advice.