A two-week-old baby typically eats between 2 and 3 ounces per feeding, with 8 to 12 feedings spread across 24 hours. That puts the total daily intake roughly in the range of 16 to 24 ounces, though every baby is slightly different. The number that matters most isn’t a precise ounce count but whether your baby is gaining weight steadily and producing enough wet diapers.
Per-Feeding and Daily Totals
In the very first days of life, newborns start small, taking just 1 to 2 ounces of formula or breast milk per feeding every 2 to 3 hours. By two weeks, most babies have worked up to 2 to 3 ounces per feeding. Their stomachs are still tiny. By day 10, a baby’s stomach is roughly the size of a ping-pong ball, holding about 2 ounces at a time. So even though the total daily volume sounds modest compared to an older infant, it’s matched to what their body can actually handle.
Because feedings happen so frequently (every 2 to 4 hours on average), the ounces add up. A baby eating 2 ounces across 12 feedings takes in 24 ounces. A baby eating 3 ounces across 8 feedings also lands at 24 ounces. The math varies, but the ballpark stays consistent.
Breastfed vs. Formula-Fed Babies
If you’re breastfeeding, you won’t be able to measure ounces directly, and that’s completely normal. Breastfed babies typically nurse 8 to 12 times in 24 hours, and the CDC notes that some babies cluster-feed, nursing as often as every hour during certain stretches, then sleeping for a longer 4- to 5-hour window. Breastfed babies regulate their own intake at the breast, taking what they need and stopping when full.
Formula-fed babies follow a similar rhythm but with more visible portions. The CDC recommends starting with 1 to 2 ounces every 2 to 3 hours in the first days, then gradually increasing as your baby shows they’re ready for more. By two weeks, most formula-fed infants are comfortably taking 2 to 3 ounces per bottle. If your baby consistently drains the bottle and still seems hungry, it’s fine to add half an ounce and see how they respond.
How to Tell Your Baby Is Getting Enough
Counting ounces is one way to track intake, but your baby’s body gives you more reliable signals. The most straightforward check is diapers: after day 5, a well-fed newborn produces at least 6 wet diapers per day. Fewer than that can signal they’re not getting enough milk.
Weight gain is the other key marker. During the first three months, babies gain roughly an ounce per day on average. Most newborns lose a small percentage of their birth weight in the first few days, then regain it by about two weeks. Your pediatrician will weigh your baby at checkups to confirm they’re on track, so that two-week visit is an important data point.
Recognizing Hunger and Fullness Cues
Rather than feeding strictly by the clock, watch your baby. Hunger shows up before crying. Early signs include fists moving toward the mouth, head turning as if searching for the breast, lip smacking, sucking on hands, and becoming more alert and active. Crying is actually a late-stage distress signal, not the first sign of hunger. Catching those earlier cues makes feedings smoother for both of you.
Fullness cues are equally useful. A satisfied baby will release the breast or pull away from the bottle, turn their head away from the nipple, and visibly relax their body, often opening their fists. If your baby does this after just an ounce, don’t force the rest. They’ll make up for it at the next feeding.
When Intake Seems Too Low or Too High
Some parents worry their two-week-old isn’t eating enough. If your baby is producing fewer than 6 wet diapers a day, seems lethargic or unusually difficult to wake for feedings, or hasn’t regained their birth weight by the two-week mark, those are signs worth raising with your pediatrician.
On the other end, some babies seem to want to eat constantly. Cluster feeding, where a baby nurses many times over a few hours, is normal and common in the early weeks. It doesn’t necessarily mean your milk supply is low. It’s often your baby’s way of signaling your body to produce more. For formula-fed babies, if your newborn is regularly taking more than 3 to 4 ounces at a feeding and spitting up frequently, they may be overeating. Pacing the bottle feed (holding the bottle more horizontally and giving short breaks during the feeding) can help them recognize fullness before they overdo it.
How Feeding Changes Over the Coming Weeks
Two weeks is still very early, and feeding patterns shift quickly. Over the next few weeks, your baby will gradually take more milk at each feeding and space feedings a bit further apart. By one month, many formula-fed babies are eating 3 to 4 ounces per feeding. By two months, that often climbs to 4 to 5 ounces. Breastfed babies follow a similar trajectory, though the per-feeding volume tends to plateau earlier since breast milk composition changes to meet the baby’s growing caloric needs.
The most useful thing you can do right now is feed on demand, watch for hunger and fullness cues, and track wet diapers. The exact number of ounces will naturally sort itself out as your baby grows.