Europe Size 44–45 to US: 10–12.5
Cross-market women’s sock and hosiery conversion mapping 44–45 specifications into 10–12.5.

Analyzing Women’s Sock Size Equivalence Across Markets
Europe Size 44–45: Corresponds to a foot length range of 27.5–29 (10.8–11.4 ), US shoe size bracket of 13–14.5, and fit classification Relaxed Stretch / Extended 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.