Adidas Kids Shoe Size Chart & Conversion Guide [Official]
Adidas kids footwear generally runs true to standard international sizing with a slightly more generous, rounded toe box compared to Nike. Their patented OrthoLite® Adifit sockliner features printed toe lines so parents can physically check fit inside the shoe.
Overall Fit
True to Size
Generous anatomical toe box
Width Tendency
Standard
Accommodates standard to slightly wide feet
Measuring Feature
Adifit Insole
Removable printed check tool
Adidas Kids Official Size Chart
OrthoLite® Calibrated| US Kids Size | Category | UK Size | EU Size | Foot Length (CM) | Inches |
|---|---|---|---|---|---|
| 0C | Newborn (0–6 weeks) | 0 | 15 | 7.6 cm | 2.99" |
| 1C | 0–3 months | 0.5 | 16 | 8.5 cm | 3.35" |
| 2C | 3–6 months | 1 | 17 | 9.2 cm | 3.62" |
| 3C | 6–9 months | 2 | 18 | 10.0 cm | 3.94" |
| 3.5C | 8–10 months | 2.5 | 18.5 | 10.4 cm | 4.09" |
| 4C | 9–12 months | 3 | 19 | 10.8 cm | 4.25" |
| 4.5C | 10–12 months | 3.5 | 19.5 | 11.2 cm | 4.41" |
| 5C | 12–15 months | 4 | 20 | 11.6 cm | 4.57" |
| 5.5C | 13–15 months | 4.5 | 21 | 12.0 cm | 4.72" |
| 6C | 15–18 months | 5 | 22 | 12.5 cm | 4.92" |
| 6.5C | 16–18 months | 5.5 | 22.5 | 12.9 cm | 5.08" |
| 7C | 1.5–2 years | 6 | 23 | 13.3 cm | 5.24" |
| 7.5C | 19–24 months | 6.5 | 23.5 | 13.7 cm | 5.39" |
| 8C | 2–2.5 years | 7 | 24 | 14.1 cm | 5.55" |
| 8.5C | 2–2.5 years | 7.5 | 25 | 14.5 cm | 5.71" |
| 9C | 2.5–3 years | 8 | 25.5 | 14.9 cm | 5.87" |
| 9.5C | 2.5–3 years | 8.5 | 26 | 15.3 cm | 6.02" |
| 10C | 3–3.5 years | 9 | 27 | 15.7 cm | 6.18" |
| 10.5C | 3–3.5 years | 9.5 | 27.5 | 16.1 cm | 6.34" |
| 11C | 3.5–4 years | 10 | 28 | 16.5 cm | 6.50" |
| 11.5C | 3.5–4.5 years | 10.5 | 28.5 | 17.0 cm | 6.69" |
| 12C | 4–5 years | 11 | 29 | 17.4 cm | 6.85" |
| 12.5C | 4.5–5.5 years | 11.5 | 30 | 17.8 cm | 7.01" |
| 13C | 5–6 years | 12 | 31 | 18.2 cm | 7.17" |
| 13.5C | 5.5–6 years | 12.5 | 31.5 | 18.7 cm | 7.36" |
| 1Y | 6–7 years | 13 | 32 | 19.1 cm | 7.52" |
| 1.5Y | 6.5–7 years | 13.5 | 33 | 19.5 cm | 7.68" |
| 2Y | 7–7.5 years | 1 | 33.5 | 20.0 cm | 7.87" |
| 2.5Y | 7.5–8 years | 1.5 | 34 | 20.4 cm | 8.03" |
| 3Y | 8–8.5 years | 2 | 35 | 20.8 cm | 8.19" |
| 3.5Y | 8.5–9 years | 2.5 | 35.5 | 21.3 cm | 8.39" |
| 4Y | 9–9.5 years | 3 | 36 | 21.7 cm | 8.54" |
| 4.5Y | 9.5–10 years | 3.5 | 36.5 | 22.1 cm | 8.70" |
| 5Y | 10–10.5 years | 4 | 37.5 | 22.6 cm | 8.90" |
| 5.5Y | 10.5–11 years | 4.5 | 38 | 23.0 cm | 9.06" |
| 6Y | 11–11.5 years | 5 | 38.5 | 23.5 cm | 9.25" |
| 6.5Y | 11.5–12 years | 5.5 | 39 | 23.9 cm | 9.41" |
| 7Y | 12+ years | 6 | 40 | 24.5 cm | 9.65" |
Key Adidas Sizing & Fitting Rules
- ✓ Remove the Adifit insole and place your child's foot on it: their big toe should rest inside the designated 'Adifit' zone.
- ✓ Adidas UK and EU conversions differ slightly from US charts; always verify foot length in centimeters or millimeters.
- ✓ Superstar and Stan Smith kids models have firm leather uppers; ensure 12mm of growing room at the toe.
Frequently Asked Questions
Helpful fit allowances, measuring wisdom, and sizing advice for parents.
Do Adidas kids shoes run true to size?
Yes. Adidas kids footwear fits true to standard sizing with a slightly wider, rounder toe box than Nike. Most parents find ordering their child's measured size provides an ideal fit.
What is the Adidas Adifit insole measuring system?
Most Adidas toddler and kids sneakers feature a removable OrthoLite® 'Adifit' sockliner with printed foot outlines. Pull out the insole, place your child's heel at the base, and verify that their longest toe lands within the marked fit zone.
What does the 'K' stand for on Adidas boxes?
The 'K' stands for 'Kids' or 'Kinder' (German for children), indicating infant and toddler sizes (e.g., 4K to 9.5K).
How do Adidas kids sizes translate to women's sizes?
Adidas youth sizes (from 3.5 to 7) convert to women's by adding 1 full size in Adidas's sizing matrix (e.g., a youth 5 is approximately a women's 6 to 6.5).