How Kids Shoe Sizes Work

Kids shoe sizes are designed to match a child’s growing feet. As children grow, their shoe size changes quickly, so footwear is usually grouped into several age categories. Understanding these categories helps parents choose the right size more easily.
Age Categories in Kids Footwear
Children’s shoes are typically divided into four main groups:
- Infant shoes (0–12 months) – Soft and lightweight shoes for babies who are learning to crawl or stand.
- Toddler shoes (1–4 years) – Designed for early walkers with flexible soles and extra support.
- Little kids sizes (4–8 years) – Shoes for preschool and early school children.
- Big kids sizes (8–12 years) – Larger sizes before children move into adult shoe sizes.
Because children grow quickly, their shoe sizes often move from infant sizes to toddler sizes and then into youth sizing systems.
Kids Shoe Size Chart by Age and Foot Length

Kids shoe size charts help match a child’s foot length with the correct shoe size. Most charts include measurements in inches or centimeters and compare sizes across US, UK, and EU systems.
Infant Shoe Size Chart
Infant size charts usually focus on very small foot lengths and early development stages. They provide general age ranges along with recommended sizes to help parents choose shoes for babies.
Toddler Shoe Size Chart

Toddler charts show how sizes increase as children begin walking and running. During this stage, shoes often change sizes quickly because toddlers’ feet grow rapidly.
Little Kids Shoe Size Chart
Little kids sizes are commonly used for preschool and early school children. These charts include a wider range of sizes and help parents select comfortable everyday shoes.
Big Kids Shoe Size Chart
Big kids size charts cover larger youth sizes that children wear before transitioning to adult footwear. At this stage, sizes begin to overlap with smaller adult shoe sizes.
Using a shoe size chart based on foot length rather than age alone is the best way to ensure a comfortable and healthy fit for growing feet.
How Fast Do Kids’ Feet Grow: Growth by Age
US vs UK vs EU Shoe Sizes
| US Kids Size | UK Kids Size | EU Size | Foot Length (cm) |
|---|---|---|---|
| 5 | 4 | 20 | 12.1 |
| 6 | 5 | 22 | 13.0 |
| 7 | 6 | 23 | 13.8 |
| 8 | 7 | 24 | 14.6 |
| 9 | 8 | 25 | 15.4 |
| 10 | 9 | 27 | 16.2 |
| 11 | 10 | 28 | 17.0 |
| 12 | 11 | 30 | 17.8 |
| 13 | 12 | 31 | 18.6 |
| 1Y | 13 | 32 | 19.4 |
| 2Y | 1 | 33 | 20.2 |
| 3Y | 2 | 34 | 21.0 |
| 4Y | 3 | 36 | 21.8 |
| 5Y | 4 | 37 | 22.6 |
How to Measure Kids’ Feet at Home

Measuring your child’s feet at home is a simple way to find the correct shoe size. Since children’s feet grow quickly, checking the size regularly helps ensure shoes fit comfortably and support healthy foot development.
Simple Measuring Method
You can measure a child’s foot using a few easy steps:
- Place the child’s heel against a wall on a flat surface.
- Lay a ruler or tape measure along the foot.
- Measure from the heel to the longest toe.
- Write down the length and compare it with a kids shoe size chart.
Measuring foot length is the most reliable way to determine the correct shoe size for children.
Tips for Choosing the Right Kids Shoe Size

Choosing the right size helps prevent discomfort and supports natural foot growth. Keep these helpful tips in mind when buying kids shoes:
- Leave about 0.5–1 cm of extra space for natural growth.
- Measure both feet, since one foot is often slightly larger.
- Check shoe size every 3–6 months as children grow quickly.
- Make sure the shoe has flexible soles and enough toe room for comfort.
Regular measurement helps ensure children wear shoes that fit well and support healthy movement.
Common Kids Shoe Size Mistakes

Choosing the correct shoe size for children is important for comfort and healthy foot development. However, many parents make small mistakes that can lead to poorly fitting shoes. Understanding these common issues can help you select better footwear for growing feet.
Common mistakes include:
Choosing shoes only by age. Children grow at different rates, so age alone is not a reliable way to determine shoe size. Measuring foot length gives a more accurate fit.
Ignoring width and brand differences. Shoe sizes can vary between brands, and some children may need wider or narrower shoes.
Buying shoes that are too large or too tight. Shoes that are too small cause discomfort, while shoes that are too big can affect walking stability.
Avoiding these mistakes helps ensure children wear shoes that support comfort, movement, and healthy foot growth.
Need Help Choosing the Right Kids Shoe Sizes?
Finding the correct kids shoe size is important for comfort, foot health, and everyday performance. If you are developing or sourcing children’s footwear and need reliable sizing guidance or manufacturing support, our experienced team can help. From product development to production, we provide professional solutions for kids footwear brands.
Contact us today to discuss your project and create high-quality kids shoes.
What are kids shoe sizes by age?
Kids shoe sizes are often grouped by age:
Infants (0–12 months): sizes 0–3.5
Toddlers (1–3 years): sizes 4–10
Little kids (4–8 years): sizes 10.5–3
Big kids (8+ years): sizes 3.5–7
Is size 13 the same as size 1?
No. In kids sizing, size 13 is the last toddler/little-kid size, while size 1 is the first youth size. The numbering restarts after 13 when transitioning to youth sizes.
What is size 26 in kids shoes?
EU size 26 usually equals about US kids size 9–9.5, depending on the brand and sizing system used.
What size is 10 to 12 years old?
Children aged 10–12 years typically wear US youth sizes 4–6.5 (EU 36–38). At this age, some kids may begin transitioning into adult shoe sizes.