Nike Kids Shoe Size Chart & Sizing Guide [Official Fit]
Nike kids shoes are engineered with a sleek, athletic fit that frequently runs slightly narrow and snug through the midfoot and forefoot. For children with wide feet, high insteps, or between sizes, sizing up by a half size (or 1 full size in toddler models) is widely recommended.
Overall Fit
Runs Small / Snug
Slightly narrow toe box
Width Tendency
Narrow
Consider 0.5 size up for wide feet
Size Categories
0C to 7Y
Baby, Toddler, Little Kid, Big Kid
Nike Kids Official Size Chart
Standard Athletic Last| 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 Nike Sizing & Fitting Rules
- ✓ If your child has wider feet or a high instep, order a half-size up to allow natural toe spread.
- ✓ Baby & Toddler (0C–10C) feature stretchy slip-on booties, but rigid styles like Air Force 1 can feel stiff initially.
- ✓ Big Kid Nike sizes (3.5Y–7Y) convert directly to Women's sizes by adding 1.5 (e.g., Nike 5Y = Women's 6.5).
Frequently Asked Questions
Helpful fit allowances, measuring wisdom, and sizing advice for parents.
Do Nike kids shoes run true to size or small?
Nike kids shoes generally run slightly small and narrow compared to casual shoes and brands like Adidas. For children with wide feet or higher insteps, sizing up by a half size (or 1 full size in toddler models) is recommended.
How do Nike toddler sizes work compared to big kids?
Nike sizes are categorized as Baby/Toddler (0C to 10C), Little Kid / Preschool (11C to 3Y), and Big Kid / Grade School (3.5Y to 7Y). The 'C' stands for Child, and 'Y' stands for Youth.
Can women wear Nike Big Kid (GS) sneakers?
Yes. Nike Big Kid (Youth) sizes 3.5Y to 7Y translate directly to women's sizes by adding 1.5. For example, a Nike Big Kid 5.5Y equals a Women's 7.0.
Why does Nike recommend checking foot length in CM?
Nike shoe tags list Japanese/international measurements in centimeters (CM), which corresponds to the inner foot length the shoe is designed to fit. Measuring your child's foot in CM guarantees the most accurate match.