Europe Size 42 to US: 5
Cross-market women’s shoes, heels, boots, flats, and sneakers conversion mapping 42 specifications into 5.

Analyzing Footwear Size Equivalence Across Markets
Europe Size 42: Features a foot length of 26.7 (10.5 ), ball width of 10 (3.94 ), heel height of 6 (2.4 ), and Flat-to-Medium Arch support optimized for women’s footwear.
US: 5: Features a foot length of 21.9 (8.6 ), ball width of 8.2 (3.2 ), and heel height of 5 (2 ), and Medium Arch support optimized for women’s footwear.