Plan on 8–12 newborn diapers per day in the first month, which adds up to about 240–360 diapers in four weeks.

For newborn formula, start near 5–15 mL per feed on day 1, rising to 60–90 mL by 1–2 weeks, with about 150–200 mL/kg across 24 hours.

Most healthy newborns take 30–60 mL per feed in week 1, rising to 60–90 mL by weeks 1–3; breastfed babies feed on demand and amounts vary.

Medically it’s 28 days; many parents use newborn stage for the first 8 weeks as feeding, sleep, and reflexes shift.

For a newborn, 12–20 muslin squares cover daily feeds, spit-ups, and swaddles; slow laundry homes may want 20–30.

Most newborns use 8–12 diapers a day in the early weeks, with at least 6 wet diapers after day 5 as feeding picks up.

Newborn diaper use averages 240–360 per month (8–12 each day), with the first weeks running on the higher side.

For newborns, plan on about 70–100 diapers per week, since most need 8–12 changes a day in the first month.

Newborns usually take 30–60 mL per feed in week 1, 60–90 mL by weeks 2–4, adding up to ~150–200 mL/kg per day.

Medically, “newborn” covers birth through day 28; after the first month, babies are infants rather than newborns.