By Mohit Patel, Marketing Specialist, Tailor Size Guide
International conversions Nov 8, 2026 4 min read
Kids' Shoe Size Conversion (US, UK, EU)
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Add Tailor Size Guide as a preferred source on GoogleKids' shoes sized 0-13 (toddler/little kid) then restart at 1-7 (big kid). US 13 = US 1 big kid (same physical size). EU runs 16-39 continuous.
The Chart
| US Toddler/Kid | UK | EU | Foot Length |
|---|---|---|---|
| 3 | 2 | 19 | 4.6" |
| 5 | 4 | 21 | 5" |
| 7 | 6 | 23 | 5.6" |
| 9 | 8 | 25 | 6" |
| 11 | 10 | 28 | 7" |
| 13 | 12 | 31 | 7.6" |
| 1 (big kid) | 13 | 32 | 7.75" |
| 3 | 2 | 34 | 8.5" |
| 5 | 4 | 37 | 9.25" |
| 7 | 6 | 39 | 9.75" |
FAQs
Why US restart at 1?
Toddler sizes 0-13 cover ages 0-5. Then 'big kid' (sometimes called 'youth' or 'GS' in basketball) restarts at 1, going up to 7. Then adult begins. Confusing but historical.
When do kids switch to adult sizing?
Big kid 7 = adult women 8.5 = adult men 7. Most kids transition to adult sizing around age 12-14. Big kid sizes lack adult tech features (limited cushioning options).
Need this on your store?
Tailor Size Guide ships pre-built size charts for Shopify.