US to CN Shoe Size for Women
Snapshot
7.5 US size equals 39 CN 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 5 US size, the selected cohort cohort returns 34.5 CN 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.
Converter Calculator
39 CN size
SwitchExplanation
US converts to CN by first mapping US to millimeters, then mapping millimeters to CN. Cohort profile fixed: Women.
For US size to CN size, the active selected cohort cohort determines the conversion constants applied to every value.
Keep the same cohort in both directions to avoid mixing shoe-size systems that use different wearer-group mappings.
Common Conversion Values
| US size | CN size |
|---|---|
| 5 | 34.5 |
| 6.5 | 37 |
| 7.5 | 39 |
| 8.5 | 40.5 |
| 10 | 43 |
Frequently Asked Questions
How can I convert back from CN size to US size?
Use the mirror CN size to US size route; it applies the inverse relationship for the opposite direction with the same assumptions.
Does this page use cohort-specific mapping?
Yes. This page is fixed to Women.
What formula is used for US size to CN size?
The converter applies the formula defined for US size to CN size, then renders rounded output for the direct answer and common-value rows.