Europe Size 33–34 to US: 5–6.5
Cross-market women’s sock and hosiery conversion mapping 33–34 specifications into 5–6.5.

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: 5–6.5: Corresponds to a foot length range of 21.5–23 (8.5–9.1 ), US shoe size bracket of 5–6.5, and fit classification Comfort Stretch / Ankle Grip.