US: Size 3 to Europe Size P
Cross-market children’s diapers, nappies, and training pants apparel conversion mapping Size 3 specifications into P.

Analyzing Size Equivalence Across Markets
US: Size 3: Corresponds to a weight range of 7.3–12.7 (16–28 ) and an approximate age bracket of 6–12 .
Europe Size P: Corresponds to a weight range of 1–2.7 (2–6 ) and an approximate age bracket of 0–1 .