Size 5.5C: the kids’ shoe size explained
A size 5.5C fits a foot of 12.5 to 12.9 cm (4.92 to 5.08 in): UK 5–5.5 and EU 21–21.5 by the standard size tables, a toddler size.
The median child’s foot reaches the middle of a 5.5C at about 22 months to 3 years, in the US Consumer Product Safety Commission’s survey of children.
Where 5.5C sits
After 5.5C: the next sizes
The next size, 6C, fits 4.2 mm more foot, up to 13.3 cm.
| Size | Foot (cm) | UK | EU | Outgrown at |
|---|---|---|---|---|
| 5.5C (this size) | 12.5–12.9 | 5–5.5 | 21–21.5 | about 22 months to 3 years |
| 6C | 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 |
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 4 brands print for a 5.5C
| Brand | Prints | UK | EU | Foot up to |
|---|---|---|---|---|
| Vans size chart (opens the brand’s site) | 5.5C | 5 | 21.5 | 12.0 cm |
| adidas size chart (opens the brand’s site) | 5.5k | 5k | 21 | 12.3 cm |
| Converse size chart (opens the brand’s site) | 5.5C | 5.5 | 21.5 | — |
| Liberty size chart (opens the brand’s site) | 5.5C | 4.5C | 21 | — |
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.
5 brands don’t make a 5.5C
Their kids’ charts skip it (most toddler charts print whole sizes only). For a foot that fills a 5.5C, up to 12.9 cm, their own charts give:
- Crocs size chart (opens the brand’s site) C6 to 13.2 cm
- Jordan size chart (opens the brand’s site) 6C to 13.3 cm
- Nike size chart (opens the brand’s site) 6C to 13.3 cm
- Teva size chart (opens the brand’s site) 6T to 13.0 cm
- Under Armour size chart (opens the brand’s site) 7K to 13.0 cm
Convert another kids’ size
5.5C in every system
| System | 5.5C |
|---|---|
| Foot length (cm) | 12.5–12.9 |
| Foot length (in) | 4.92–5.08 |
| UK | 5–5.5 |
| EU | 21–21.5 |
| Japan (cm) | 12.5–13 |
| Mondopoint (mm) | 125–130 |
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.