A newborn drinks surprisingly little breast milk at first, starting at roughly 1 ounce total on their first day of life and gradually increasing to 24 to 32 ounces per day by about three weeks of age. The amounts change rapidly in those early days because a newborn’s stomach is tiny and grows quickly, so what’s “normal” on day two looks very different from what’s normal at two weeks.
Daily Intake by Age
Breast milk intake follows a steep curve in the first two weeks, then levels off. Here’s what to expect over a 24-hour period:
- Day 0 to 1: About 1 ounce total per day
- Days 2 to 4: About 8 ounces per day
- Days 5 to 7: 12 to 20 ounces per day
- Days 8 to 14: 20 to 24 ounces per day
- 3 weeks to 6 months: 24 to 32 ounces per day
That first-day number can feel alarmingly low, but it’s completely appropriate. Your body produces colostrum in the first couple of days, a thick, concentrated early milk that comes in small quantities, typically a tablespoon to an ounce over 24 hours. Colostrum is packed with immune factors and is exactly what a newborn needs in those early hours. Around days 2 to 5, your milk transitions to a higher-volume mature milk, and intake climbs quickly from there.
How Much Per Feeding
Newborns eat frequently but take in small amounts at each session. On day one, a baby takes in only about 1 to 1.5 teaspoons (5 to 7 ml) per feeding. By day three, that increases to roughly 4.5 to 5.5 teaspoons (22 to 27 ml). By day ten, most babies are taking 2 to 2.75 ounces (60 to 81 ml) per feeding.
These volumes match the size of the stomach itself, which grows from about the size of a cherry on day one to something closer to a large egg by week two. Stomach growth slows after day ten, eventually reaching about 4 ounces per feeding by three or four months. This is why young babies need to eat so often: they simply can’t hold much at once.
How Often Newborns Feed
Breastfed newborns typically nurse every two hours, measured from the start of one feeding to the start of the next. That works out to 10 to 12 feeding sessions in 24 hours. Bottle-fed newborns (whether receiving breast milk or formula) tend to eat every two to three hours, with eight feedings per day as a general minimum.
These are averages. Some feedings will be shorter and closer together, especially in the evening, when many newborns “cluster feed.” During cluster feeding, a baby may want to nurse every 30 minutes to an hour for several hours in a row. This is normal and doesn’t mean your supply is low. Babies often cluster feed to tank up before a longer stretch of sleep, and the frequent stimulation also signals your body to produce more milk.
Growth spurts trigger a similar pattern. During a spurt, your baby may seem fussier than usual and want to nurse longer and more often, sometimes every 30 minutes. These episodes typically last a day or two and then feeding patterns settle again.
If You’re Bottle-Feeding Breast Milk
When giving breast milk in a bottle, the recommended approach is paced bottle feeding: holding the bottle at a slight angle, letting the baby control the pace, and pausing periodically. This prevents overfeeding, which is easier to do with a bottle than at the breast because milk flows more freely from an artificial nipple.
A practical tip is to put smaller amounts in the bottle, around 1 to 2 ounces at a time for a young newborn. You can always offer more if your baby is still hungry. If your baby slows down, stops sucking, pushes the bottle away, or falls asleep, that’s a sign they’re done, even if milk remains. Trusting these cues helps you avoid wasting pumped milk and keeps intake closer to what a baby would take at the breast.
How to Tell Your Baby Is Getting Enough
When you’re breastfeeding directly, you can’t measure ounces, so diaper output is the most reliable day-to-day indicator. By days 4 to 7, a well-fed newborn produces at least six wet diapers and three dirty diapers in 24 hours. In the first few days the numbers are lower, roughly matching the day of life (one wet diaper on day one, two on day two, and so on).
Weight gain is the other key marker. Most newborns lose a small percentage of their birth weight in the first few days, then begin gaining it back. In the first few months, healthy babies gain about 1 ounce per day, or roughly 5 to 7 ounces per week. Your pediatrician will track weight at early checkups, usually within the first week and again at two weeks, to confirm things are on track.
Beyond diapers and weight, watch your baby’s behavior. A baby who seems satisfied after feedings, has good skin color, and is increasingly alert during wake periods is almost certainly getting enough milk. Persistent sleepiness, a weak cry, or refusing to feed can signal that intake is falling short.
Why the Range Is So Wide
You’ll notice the ranges above are broad. A baby drinking 12 ounces on day five and one drinking 20 ounces on day five can both be perfectly healthy. Several factors create this variation. Larger babies tend to eat more. Babies who nurse more frequently may take less per session but the same total over 24 hours. The fat content of breast milk also fluctuates throughout the day and from one feeding to the next, so two babies drinking the same volume may be getting different calorie loads.
This is why pediatricians rely on growth curves rather than single measurements. A baby who consistently tracks along their own percentile, whether that’s the 15th or the 85th, is doing well regardless of exactly how many ounces they drink. The numbers in feeding charts are useful guideposts, but your baby’s weight, output, and behavior tell the fuller story.