Europe Size 33–34 to US: 10–12.5
Cross-market women’s sock and hosiery conversion mapping 33–34 specifications into 10–12.5.

Analyzing Women’s Sock Size Equivalence Across Markets
Europe Size 33–34: Corresponds to a foot length range of 20–21.5 (7.9–8.5 ), US shoe size bracket of 3.5–4.5, and fit classification Snug / Petite Fit.
US: 10–12.5: Corresponds to a foot length range of 25.5–27.5 (10–10.8 ), US shoe size bracket of 10–12.5, and fit classification Comfort Stretch / Ankle Grip.