Most newborns need 8–12 diaper changes per day, or about 56–84 per week. That equals 240–360 diaper changes during a 30-day first month. However, you may not need that many newborn-size diapers because some babies move into Size 1 quickly.

A newborn usually uses 8 to 12 diapers per day. Some babies may need more changes during growth spurts or frequent feedings.However, the number is often lower during the first few days after birth. Wet diaper output gradually increases as feeding becomes established.

Most full-term babies begin in Newborn (N) diapers, but weight and fit matter more than age. Newborn diapers commonly fit babies up to about 10 lb (4.5 kg), while Size 1 often begins around 8 lb (3.6 kg).

Pick a newborn diaper size by baby weight. Use weight, not age, for this choice. Newborn sizes usually fit babies up to 10 pounds. A good fit keeps your baby happy. It also keeps your baby dry. Check the fit with two fingers. Slide them inside the waistband. They should fit without pinching.