UK to US Shoe Size for Kids
Snapshot
5.5 UK size equals 6.5 US size. Conversion Encyclopedia uses the same fixed conversion basis across the calculator, common values, and reverse page for this page.
- Reference basis: This result uses the selected selected cohort cohort as the profile basis.
- Example: For 3 UK size, the selected cohort cohort returns 4 US size under the same mapping assumptions.
- Use the reverse page if you need the opposite direction with the same basis.
Use the interactive calculator below for custom values and the common-value table for quick checks.
Interactive conversion
Converter Calculator
6.5 US size
SwitchMachine access
Available to apps and AI agents
UK to US Shoe Size for Kids can be requested through Conversion Encyclopedia's structured interfaces by software and compatible AI agents. The kids cohort identifies the sizing system used by the conversion.
Machine-readable identifiers
- Conversion family
shoe-size- Source unit
uk- Target unit
us- Cohort
kids
The JSON API and OpenAPI specification use the identifiers to reach the conversion engine. WebMCP lets compatible AI agents request the same calculation.
Example API request and response
POST /api/v1/convertRequest
{
"family": "shoe-size",
"value": 5.5,
"from": "uk",
"to": "us",
"parameters": {
"cohort": "kids"
}
}Essential response
{
"ok": true,
"conversion": {
"family": "shoe-size",
"value": 5.5,
"from": "uk",
"to": "us",
"result": {
"raw": 6.5,
"display": "6.5"
},
"canonicalPath": "/apparel-size/shoe-size/uk-to-us-for-kids/"
}
}Explanation
UK converts to US by first mapping UK to millimeters, then mapping millimeters to US. Cohort profile fixed: Kids.
From UK size to US size, results depend on the selected selected cohort cohort and stay consistent with that cohort across table rows and calculator input.
Keep the same cohort in both directions to avoid mixing shoe-size systems that use different wearer-group mappings.
Common Conversion Values
| UK size | US size |
|---|---|
| 3 | 4 |
| 4.5 | 5.5 |
| 5.5 | 6.5 |
| 6.5 | 7.5 |
| 8 | 9 |
Questions & answers
Frequently Asked Questions
Is the reverse shoe-size direction available?
Yes. The mirror page US to UK (Kids) uses the inverse mapping path.
Which shoe-size cohort is used for UK to US?
Kids sizing is fixed for this shoe-size mapping.
How is UK size to US size calculated?
The converter applies the formula defined for UK size to US size, then renders rounded output for the direct answer and common-value rows.