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US women’s shoe size to EU shoe size

9 US W = 40.64 EU

⇄
EU shoe size (EU)40.64

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Sizes differ between brands — the values are approximate.

Formula

This conversion is not a single factor; it uses this formula:

EU = US W × 1.27 + 29.21

Conversion table

US women’s shoe size (US W)EU shoe size (EU)
434.29
535.56
636.83
738.1
839.37
940.64
1041.91
1143.18
1244.45
1345.72

Frequently asked questions

How do I convert US W to EU?

This conversion is not a single factor; it uses this formula: EU = US W × 1.27 + 29.21

What is 9 US W in EU?

9 US W = 40.64 EU.

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Updated November 9, 2026