US: Size 1 to Europe Size 4
Cross-market children’s diapers, nappies, and training pants apparel conversion mapping Size 1 specifications into 4.

Analyzing Size Equivalence Across Markets
US: Size 1: Corresponds to a weight range of 3.6–6.4 (8–14 ) and an approximate age bracket of 0–3 .
Europe Size 4: Corresponds to a weight range of 7.3–12.7 (16–28 ) and an approximate age bracket of 6–12 .