A 1-week-old baby typically drinks 1 to 2 ounces of breast milk per feeding, adding up to roughly 10 to 20 ounces over a full 24-hour day. That range is wide because newborns vary in size, appetite, and how efficiently they latch or take a bottle. Understanding what’s normal at this stage can help you feel more confident that your baby is getting enough.
Per-Feeding and Daily Totals
At 7 days old, most babies take between 1 and 2 ounces (about 30 to 60 milliliters) each time they eat. That’s a significant jump from the first day or two of life, when a newborn’s stomach is roughly the size of a cherry and holds less than half an ounce. By the end of the first week, the stomach has stretched to hold 2 to 4 ounces, though babies rarely fill it completely at each feeding.
Because feedings are small, they need to happen often. Expect your baby to nurse or take a bottle 8 to 12 times in 24 hours, which works out to roughly every 1.5 to 3 hours around the clock. Multiplying those small feeds across the day gives you that 10-to-20-ounce daily total. Babies on the lower end of that range aren’t necessarily underfed; they may simply eat a little less more frequently.
Why the Volume Changes So Fast
Your body produces three distinct types of milk in the early weeks. Colostrum, the thick yellowish milk present at birth, comes in tiny but nutrient-dense amounts perfectly matched to a newborn’s marble-sized stomach. Starting around day 2 to 5, transitional milk gradually replaces colostrum. This milk is higher in volume and shifts in fat and sugar content to keep pace with your baby’s growing appetite. Transitional milk continues until about two weeks postpartum, when mature milk takes over.
This progression means that the amount your baby eats at one week will already look different from what they needed at three days old, and it will increase again over the next several days. By two weeks, many babies are consistently taking 2 to 3 ounces per feeding.
If You’re Feeding Pumped Milk
The same 1-to-2-ounce guideline applies whether your baby drinks directly from the breast or from a bottle of expressed milk. When bottle feeding, it’s tempting to prepare larger bottles “just in case,” but starting with 1 to 2 ounces and offering more only if your baby still seems hungry helps avoid overfeeding. Breast milk that’s been warmed and partially consumed generally needs to be used within two hours, so smaller portions also reduce waste.
One thing to keep in mind: babies tend to drink faster from a bottle than from the breast, which can lead to taking in more than they need before their brain registers fullness. Paced bottle feeding, where you hold the bottle more horizontally and pause periodically, lets the baby control the pace and stop when satisfied.
How to Tell Your Baby Is Getting Enough
Ounce counts are useful, but diapers are the most reliable day-to-day signal. After day 5, a well-fed newborn produces at least 6 wet diapers per day. The number of dirty diapers varies, but most breastfed babies at this age stool multiple times daily. If you’re consistently seeing those wet diapers, your baby is almost certainly getting adequate milk.
Weight is the other key indicator. It’s normal for newborns to lose up to 10% of their birth weight in the first few days, mostly from fluid loss. Most babies begin regaining weight by the end of the first week and return to their birth weight by about 10 to 14 days old. Your pediatrician will track this at early checkups.
Reading Your Baby’s Hunger Cues
Rather than watching the clock, feeding on demand is the most effective way to match your baby’s actual needs. Early hunger signs include bringing hands to the mouth, turning the head toward your breast or a nearby bottle (called rooting), lip smacking, and clenched fists. Crying is a late hunger signal. A baby who’s already upset may have trouble latching, so catching those quieter cues early makes feedings smoother for both of you.
Fullness looks like the opposite: relaxed, open hands, turning away from the breast or bottle, and closing the mouth. If your baby shows these signs after just an ounce, that feeding was enough. They’ll make up for it at the next one.