A newborn drinks surprisingly little milk at first, starting with just 1 to 2 teaspoons per feeding on the first day of life. That amount increases quickly, reaching 1.5 to 2 ounces per feeding by the end of the first week and 3 to 5 ounces per feeding by one month of age. Because a newborn’s stomach is tiny and grows rapidly, the right amount changes almost daily in those early weeks.
The First 48 Hours
On day one, your baby’s stomach holds only about 5 to 7 milliliters at a time, roughly one teaspoon. This is why colostrum, the thick, concentrated milk your breasts produce before your regular milk comes in, is delivered in such small quantities. A newborn typically takes in 2 to 10 milliliters per feeding session in the first 24 hours. That might look like almost nothing on a spoon, but it’s the right match for a stomach the size of a cherry.
By 24 to 48 hours old, intake climbs slightly to about 5 to 15 milliliters per feeding. Your baby will want to nurse frequently during this window, often 8 to 12 times in a 24-hour period. These short, frequent sessions help stimulate your milk supply and give the baby the immune-rich colostrum they need before higher-volume milk arrives.
Day 3 Through the First Week
Around day three, the stomach has already grown to hold roughly 22 to 27 milliliters (just under an ounce). This is also when many mothers notice their milk “coming in,” transitioning from colostrum to a higher volume of transitional milk. Feedings start to feel more substantial, and you may notice your baby swallowing more audibly.
By one week, stomach capacity reaches 45 to 60 milliliters, or about 1.5 to 2 ounces per feeding. With 8 to 12 feedings a day, that works out to roughly 12 to 24 ounces of milk in 24 hours. The wide range is normal. Some babies cluster their feedings into a few intense hours and then sleep longer stretches, while others space them more evenly.
Two Weeks to One Month
During the first month, babies gradually increase their intake until they’re taking 3 to 5 ounces (80 to 150 milliliters) per feeding. At this point, total daily intake for a formula-fed baby tops out at around 32 ounces (960 milliliters) per day. Breastfed babies generally self-regulate their intake to a similar range, though the exact number is harder to measure since milk goes directly from breast to baby.
Feeding frequency often stays at 8 to 12 sessions per day through the first month, though some babies begin stretching to slightly longer intervals between feeds as their stomach capacity grows. If your baby is taking 4 ounces per feeding and nursing 8 times a day, that’s 32 ounces total, right in line with what’s expected.
How to Tell Your Baby Is Getting Enough
Since you can’t measure ounces at the breast the way you can with a bottle, diapers and weight gain are the most reliable indicators. After day five, your newborn should produce at least six wet diapers per day. The number of dirty diapers varies, but frequent stooling in the early weeks is a good sign that milk is moving through.
Weight is the other key marker. Most newborns lose some weight in the first few days, which is completely normal. About 80 percent of babies regain their birth weight by two weeks of age, with weight typically starting to climb again between days three and five. A weight loss of 10 percent or more from birth weight warrants a closer look at how feeding is going.
Reading Your Baby’s Hunger Cues
Rather than watching the clock or counting ounces, feeding on demand based on your baby’s behavior is the most effective approach. Early hunger signs include fists moving toward the mouth, head turning as if searching for the breast, lip smacking, and sucking on hands. These cues appear before crying. By the time a baby is crying from hunger, they’re already distressed, which can make latching harder.
Fullness has its own signals. A satisfied baby will release the breast on their own, turn their head away from the nipple, and visibly relax their body. You may notice their fists unclench and their arms go limp. These are reliable signs that the feeding is done, even if it lasted only 10 minutes on one side.
Breastfed vs. Formula-Fed Intake
Breastfed and formula-fed newborns follow the same general trajectory in the first month, but there are practical differences. Formula is digested more slowly than breast milk, so formula-fed babies sometimes go slightly longer between feedings. Breastfed babies tend to eat smaller amounts more frequently, which is why the 8 to 12 feedings per day guideline applies specifically to nursing.
If you’re pumping and bottle-feeding breast milk, the per-feeding volumes described above (1.5 to 2 ounces at one week, 3 to 5 ounces at one month) give you a useful target. One thing to watch for with bottle feeding is that babies can drink faster from a bottle than from the breast. Paced bottle feeding, where you hold the bottle more horizontally and let the baby control the flow, helps prevent overfeeding and keeps intake closer to what they’d get at the breast.
Quick Reference by Age
- Day 1: 1 teaspoon (5 to 7 ml) per feeding
- Day 3: just under 1 oz (22 to 27 ml) per feeding
- One week: 1.5 to 2 oz (45 to 60 ml) per feeding
- One month: 3 to 5 oz (80 to 150 ml) per feeding
These ranges assume 8 to 12 feedings per 24 hours. Babies who nurse more frequently will take less per session, and babies who go slightly longer between feeds may take more. Both patterns are normal as long as weight gain and diaper output stay on track.