Why Kids' Shoe Sizing Matters More
Children's feet grow fast, and unevenly — measure again every few months rather than trusting last season's size. Shoes that are too small can cause lasting foot problems. Too large means tripping and blisters.
Kids' Shoe Size by Age (Average)
| Age | Foot Length (cm) | US Size | EU Size | UK Size |
|---|---|---|---|---|
| 1 year | 12.0 | 4C | 19 | 3 |
| 2 years | 14.0 | 7C | 23 | 6 |
| 3 years | 15.5 | 9C | 26 | 8.5 |
| 4 years | 17.0 | 10.5C | 28 | 10 |
| 5 years | 18.5 | 12C | 30 | 11.5 |
| 6 years | 19.5 | 13C | 31 | 12.5 |
| 7 years | 20.5 | 1Y | 33 | 13 |
| 8 years | 21.5 | 2Y | 34 | 1 |
| 10 years | 23.0 | 4Y | 36 | 3 |
| 12 years | 24.5 | 6Y | 38.5 | 5 |
These are averages. Always measure — children vary significantly at the same age.
How to Measure Kids' Feet
- Stand them up — never measure while sitting or lying down.
- Foot on paper — trace around the foot with a pen held straight.
- Measure from heel to longest toe — in centimeters.
- Add 10-15mm — growing room. Children need more space than adults.
- Check every 2-3 months — especially ages 2-6 when growth is fastest.
Get Your Child's Size
Enter foot length and see sizes across Nike Kids, Adidas Kids, New Balance Kids, and more.
Find Kids' Size →The Thumb Test
With the child standing in the shoe, press your thumb on the front. There should be about one thumb's width (12-15mm) between the longest toe and the shoe tip. Less than that = too small. More than that = too big.
Signs the Shoes Are Too Small
- Red marks on toes or top of foot
- Child resists putting shoes on
- Walking on tiptoes or stumbling
- Blisters or calluses
- Curled toes inside the shoe
Best Kids' Shoe Brands for Sizing
| Brand | Sizing | Width | Notes |
|---|---|---|---|
| Nike Kids | True to size | Standard-Narrow | Wide feet may need to size up |
| New Balance Kids | True to size | Wide options (W, XW) | Best for wide kids' feet |
| Adidas Kids | True to size | Standard | Good all-around fit |
| Skechers Kids | Runs slightly large | Standard-Wide | Affordable, easy on/off |
| Stride Rite | True to size | Wide options | Best for toddlers and first walkers |
Kids' Size Passport
One measurement. Your child's exact size in every kids' brand. Free, instant.
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