UK Kids Shoe Size to US Converter
Instantly and accurately convert UK children’s shoe sizes to US, EU, and centimetres. Free tool with brand-specific fitting advice for Nike, Adidas, and Clarks.
Find the Perfect US Size
Select your child’s current UK shoe size and brand preference below to get an instant, precise conversion to US sizing, complete with foot length validation.
Size Details
Enter your child’s shoe variables for an accurate match
Conversion Results
Estimated US size and fitting details
Common UK to US Kids Size Chart
Typical size conversions for popular children’s age groups to help you shop with confidence across international brands.
| UK Kids Size | US Kids Size | EU Size | Foot Length (cm) |
|---|---|---|---|
| 4 (Toddler) | 5 | 20 | 12.5 cm |
| 6 (Toddler) | 7 | 22.5 | 13.5 cm |
| 8 (Little Kid) | 9 | 25 | 15.0 cm |
| 10 (Little Kid) | 11 | 27.5 | 17.0 cm |
| 12 (Little Kid) | 13 | 30 | 18.5 cm |
| 13 (Little Kid) | 1 (Youth) | 31 | 19.0 cm |
| 2 (Youth) | 3 (Youth) | 34 | 21.0 cm |
| 4 (Youth) | 5 (Youth) | 37 | 23.0 cm |
| 6 (Youth) | 7 (Youth) | 39 | 25.0 cm |
Kids Shoe Sizing FAQ
Everything you need to know about converting UK children’s shoe sizes to US and ensuring the perfect fit.
For toddlers and little kids, the US size is typically the UK size plus 1 (e.g., UK 8 = US 9). Once children reach youth sizes (UK 13 and above), the US sizing resets, so a UK 13 becomes a US 1 (Youth), UK 1 becomes US 2 (Youth), and so on.
Yes, Nike kids’ shoes often run slightly small or narrow compared to standard UK sizing. If you are converting a UK size to buy Nike shoes in US sizing, it is highly recommended to go up by half a size (0.5) for a comfortable fit.
On average, a 5-year-old child wears a UK size 11 or 12 (Little Kid). However, children’s foot growth varies greatly. The most reliable method is to measure the child’s foot in centimetres and use a size chart rather than relying solely on age.
Have your child stand on a piece of paper with their heel against a wall. Mark the tip of their longest toe, then measure the distance in centimetres. Always add 0.5 cm to 1 cm to this measurement to allow for growing room and natural foot swelling during the day.