US: 2T-4T to Europe Size 27-30
Cross-market children’s socks, tights, hosiery, leg warmers, and dance tights sizing conversion mapping 2T-4T specifications into 27-30.

Analyzing Size Equivalence Across Markets
US: 2T-4T: Corresponds to a foot length of 15.5 (6.1 ), matching US shoe size 8-9, and age range 24–48 months.
Europe Size 27-30: Corresponds to a foot length of 17.5 (6.9 ), matching US shoe size 10-12, and age range 48–84 months.