AU to EU Shoe Size for Unisex
Snapshot
7 AU size equals 40.5 EU 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 4.5 AU size, the selected cohort cohort returns 37.5 EU 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
40.5 EU size
SwitchExplanation
AU converts to EU by first mapping AU to millimeters, then mapping millimeters to EU. Cohort profile fixed: Unisex.
From AU size to EU 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
| AU size | EU size |
|---|---|
| 4.5 | 37.5 |
| 5.5 | 39 |
| 7 | 40.5 |
| 8 | 42 |
| 9 | 43.5 |
Frequently Asked Questions
How do I reverse AU size to EU size?
Use the mirror EU size to AU 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 Unisex.
How is AU size to EU size calculated?
The converter applies the formula defined for AU size to EU size, then renders rounded output for the direct answer and common-value rows.