How much formula should a newborn drink?

What the evidence says

In the first few days of life, most formula-fed newborns take about 1 to 2 ounces per feeding, offered roughly every 2 to 3 hours, which works out to 8 to 12 feedings in 24 hours. A newborn's stomach is tiny, so small, frequent feeds are normal and expected.

Over the first month, the amount per feeding gradually rises to about 2 to 4 ounces, with feedings spacing out to every 3 to 4 hours. A helpful rule of thumb used by pediatricians is roughly 2.5 ounces of formula per pound of body weight per day, with total daily intake usually not exceeding about 32 ounces.

Every baby is different, so follow your baby's hunger and fullness cues rather than a strict number. Signs of getting enough include steady weight gain and, after the first few days, at least 5 to 6 wet diapers a day. If your baby consistently seems to want much more or less than these ranges, or you have concerns about weight gain, check in with your doctor or public health nurse.