Europe Size 38.5 to US: 6
Cross-market women’s shoes, heels, boots, flats, and sneakers conversion mapping 38.5 specifications into 6.

Analyzing Footwear Size Equivalence Across Markets
Europe Size 38.5: Features a foot length of 24.4 (9.6 ), ball width of 9.1 (3.58 ), heel height of 8.5 (3.35 ), and Medium Arch support optimized for women’s footwear.
US: 6: Features a foot length of 22.9 (9 ), ball width of 8.5 (3.3 ), and heel height of 6 (2.4 ), and Medium Arch support optimized for women’s footwear.