US: 12 to Europe Size 38.5
Cross-market women’s shoes, heels, boots, flats, and sneakers conversion mapping 12 specifications into 38.5.

Analyzing Footwear Size Equivalence Across Markets
US: 12: Features a foot length of 27.6 (10.85 ), ball width of 10.3 (4.05 ), heel height of 5 (2 ), and Flat-to-Medium Arch support optimized for women’s footwear.
Europe Size 38.5: Features a foot length of 24.4 (9.6 ), ball width of 9.1 (3.58 ), and heel height of 8.5 (3.35 ), and Medium Arch support optimized for women’s footwear.