👟 Footwear · Kids
Kids' EU 21 to US
EU 21 = US 4C
Foot ~11.0 cm · approx 9–12 months
⚠️ Measure the foot — age and labels are only a guide. Kids' feet grow fast and brands differ. Athletic brands like Nike and adidas often run small for kids; casual brands like Crocs and Converse often run large. Always check the specific brand and measure the foot.
Kids' sizes around this one:
| US | UK | EU | Foot (cm) | Approx age |
|---|---|---|---|---|
| 1C | 0.5 | 18 | 8.3 | 0–3 months |
| 2C | 1.5 | 19 | 9.2 | 3–6 months |
| 3C | 2.5 | 20 | 10.2 | 6–9 months |
| 4C | 3.5 | 21 | 11.0 | 9–12 months |
| 5C | 4.5 | 22 | 11.9 | 12–18 months |
| 6C | 5.5 | 23 | 12.7 | 18–24 months |
| 7C | 6.5 | 24 | 13.7 | 2 years |
Convert any other size with the kids' shoe size converter.
ⓘ Affiliate links below. As an Amazon Associate we earn from qualifying purchases at no extra cost to you.
★ Top pick · Recommended on Amazon
Kids' Foot Measuring Gauge
Measure little feet accurately at home — the reliable way to size, not by age.
View on Amazon →Recommended on Amazon
Kids' School Shoes
Durable, well-fitting school shoes for growing feet.
View on Amazon →