How Many Diapers Does a Baby Use in a Year? | LoveToKnow
You'll use between 35 to 49 diapers per week in size 2, which will last until your baby is about 30 weeks old if he or she was around eight pounds at birth. This translates to approximately 595 size 2 diapers. 805 Size 3 Diapers. By 30 weeks, your once eight-pound little one may transition to size 3 diapers.