Size 6C: the kids’ shoe size explained
A size 6C fits a foot of 12.9 to 13.3 cm (5.08 to 5.25 in): UK 5.5–6 and EU 21.5–22 by the standard size tables, a toddler size.
The median child’s foot reaches the middle of a 6C at about 22 months to 3 years, in the US Consumer Product Safety Commission’s survey of children.
Where 6C sits
After 6C: the next sizes
The next size, 6.5C, fits 4.3 mm more foot, up to 13.8 cm.
| Size | Foot (cm) | UK | EU | Outgrown at |
|---|---|---|---|---|
| 6C (this size) | 12.9–13.3 | 5.5–6 | 21.5–22 | about 22 months to 3 years |
| 6.5C | 13.3–13.8 | 6–6.5 | 22.5–23 | about 22 months to 3 years |
| 7C | 13.8–14.2 | 6.5–7 | 23–23.5 | about 22 months to 3 years |
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 12 brands print for a 6C
On the brands’ own charts a 6C is for a foot of up to 12.0 cm (Under Armour) to 13.35 cm (UGG); the standard is 13.3 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) | 6K | 5.5 | 22 | 12.0 cm |
| Vans size chart (opens the brand’s site) | 6C | 5.5 | 22 | 12.0 cm |
| adidas size chart (opens the brand’s site) | 6k | 5.5k | 22 | 12.8 cm |
| Teva size chart (opens the brand’s site) | 6T | 5 | 21 | 13.0 cm |
| Crocs size chart (opens the brand’s site) | C6 | 6 | 21-22 | 13.2 cm |
| Jordan size chart (opens the brand’s site) | 6C | 5.5 | 22 | 13.3 cm |
| Nike size chart (opens the brand’s site) | 6C | 5.5 | 22 | 13.3 cm |
| UGG size chart (opens the brand’s site) | 6T | 5 | 22 | 13.35 cm |
| ASICS size chart (opens the brand’s site) | K6 | K5 | 22.5 | — |
| Converse size chart (opens the brand’s site) | 6C | 6 | 22 | — |
| Liberty size chart (opens the brand’s site) | 6C | 5C | 22 | — |
| Onitsuka Tiger size chart (opens the brand’s site) | K6 | K5 | 22.5 | — |
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
6C in every system
| System | 6C |
|---|---|
| Foot length (cm) | 12.9–13.3 |
| Foot length (in) | 5.08–5.25 |
| UK | 5.5–6 |
| EU | 21.5–22 |
| Japan (cm) | 13–13.5 |
| Mondopoint (mm) | 130–135 |
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.