A women's shoe size 38 in European sizing typically corresponds to about a US women's size 7.5 to 8 depending on the brand. This size usually translates to a foot length of approximately 23.8 to 24 cm (9 3/8 to 9 1/2 inches). For example, in Nike, Jordan, or Vans brand shoes, a women's size 38 corresponds roughly to a US women's size 7.5 or 8.
If you are converting to US men's sizes to women's, you generally add about 1.5 sizes. So, a men's size 6.5 to 7 usually converts to women's size 8 (38 in EU size). Summary:
- EU size 38 = US women's ~ 7.5-8
- Length approx 23.8-24 cm (9 3/8 - 9 1/2 inches)
This offers a good guideline for 38 in women's shoes in most sizing systems. Exact fits may vary by brand and style.