A 2-week-old baby typically eats 2 to 3 ounces per feeding, about 8 to 12 times in a 24-hour period. That works out to roughly 16 to 24 ounces total per day, though every baby is a little different. How much your baby takes at each feeding depends on whether they’re breastfed or formula-fed, how fast they’re growing, and even the time of day.
Per-Feeding Amounts at Two Weeks
A newborn’s stomach is tiny. By day 10, it’s roughly the size of a ping-pong ball, holding about 2 ounces at a time. So at two weeks old, most babies comfortably take 2 to 3 ounces per feeding. Some feedings your baby will drain the bottle; others they’ll take less. That variation is normal.
In the first days of life, babies start with just 1 to 2 ounces of formula (or very small amounts of colostrum for breastfed babies) every 2 to 3 hours. By the end of the first week, they’ve already worked up to about 1 to 2 ounces per feeding. The jump to 2 to 3 ounces by week two follows that same steady climb as the stomach stretches and the baby gets more efficient at feeding.
Breastfed vs. Formula-Fed Babies
Breastfed and formula-fed babies eat on slightly different schedules, and there’s a straightforward reason: breast milk leaves the stomach faster than formula. In one study, breast milk emptied from the stomach about 20 minutes faster than formula when volumes were similar. That means breastfed newborns tend to get hungry again sooner and may feed more frequently, sometimes every 2 hours, while formula-fed babies often stretch closer to 3 to 4 hours between feedings.
This difference also shapes how volume adds up over time. Formula-fed babies tend to take larger amounts per feeding and increase their total daily intake faster as they grow. Breastfed babies, on the other hand, keep feeding frequently rather than dramatically increasing the volume at each session. Both patterns are perfectly healthy. If you’re breastfeeding, it’s harder to measure exact ounces, but as long as your baby is gaining weight and producing enough wet diapers, they’re getting what they need.
Feeding Frequency and Timing
At two weeks, expect to feed your baby 8 to 12 times in a 24-hour period. That’s roughly every 2 to 3 hours around the clock, including overnight. Most newborns don’t distinguish between day and night yet, so the feedings will be spread fairly evenly.
You may also notice stretches where your baby wants to eat every hour or even more often. This is called cluster feeding, and it’s common in the first few weeks. Some experts believe cluster feeding lines up with growth spurts. During these episodes, your baby might nurse or take a bottle almost constantly for a few hours, then sleep for a longer stretch afterward. It can feel overwhelming, but it’s a normal pattern and usually passes within a day or two.
How to Tell Your Baby Is Hungry
Rather than watching the clock, it helps to watch your baby. Early hunger cues include putting their hands to their mouth, turning their head toward your breast or the bottle (called rooting), puckering or smacking their lips, and clenching their fists. Crying is actually a late hunger sign. If you can catch the earlier cues, feeding tends to go more smoothly because the baby is calmer.
When your baby is full, the signals are just as clear: they’ll close their mouth, turn away from the breast or bottle, and their hands will relax and open. Following these cues rather than trying to get your baby to finish a set amount helps prevent both underfeeding and overfeeding.
Signs Your Baby Is Getting Enough
Since you can’t always measure exactly how much a breastfed baby takes in, diapers and weight gain are the two most reliable indicators. After the first five days of life, your baby should produce at least 6 wet diapers per day. The number of dirty diapers will vary, but consistent wet diapers are a strong sign of adequate hydration.
Weight gain is the other key marker. Healthy newborns gain about 1 ounce per day in the first few months. Most babies lose a small amount of weight in the first few days after birth, then regain it by about 10 to 14 days old. Your pediatrician will track this at the two-week checkup, which is one reason that visit is so important.
If your baby seems unusually sleepy and hard to wake for feedings, isn’t producing enough wet diapers, or hasn’t regained their birth weight by two weeks, those are signs worth bringing up with your pediatrician. On the flip side, a baby who is steadily gaining weight, alert when awake, and filling diapers is almost certainly eating enough, even if the exact ounce count varies from feeding to feeding.