A 6-month-old typically drinks 24 to 32 ounces of formula or breast milk per day, spread across four to six feedings. The exact amount depends on whether your baby is formula-fed, breastfed, or starting to eat solid foods.
Formula-Fed Babies at 6 Months
Most formula-fed 6-month-olds drink 6 to 8 ounces per bottle, four or five times in a 24-hour period. That puts the daily total somewhere between 24 and 32 ounces for most babies. A baby on the smaller side might sit comfortably at 24 ounces, while a larger or more active baby could reach 32.
The 32-ounce mark is a useful number to keep in mind. Babies who consistently drink more than 32 ounces of formula a day are generally getting enough vitamin D from the formula itself and don’t need a supplement. It also serves as a rough ceiling. If your baby regularly wants more than 32 ounces and seems unsatisfied, that’s often a signal they’re ready for more solid food rather than more formula.
Breastfed Babies at 6 Months
Breastfed babies typically take in about 3 to 4 ounces per feeding session, adding up to roughly 18 ounces or more over 24 hours. That number sounds lower than formula intake, but breast milk is digested differently and tends to be more calorie-dense per ounce, so the total volume doesn’t need to match formula ounce for ounce.
If you’re pumping and bottle-feeding breast milk, those 3- to 4-ounce portions are a good starting point. Breastfed babies also tend to feed more frequently than formula-fed babies, sometimes five or six times a day, which is completely normal. The total daily volume stays relatively stable from about one month of age through six months for breastfed infants, even as the baby grows, because the composition of breast milk changes to meet their needs.
How Solid Foods Change the Picture
Six months is right when most babies start eating solid foods, and this gradually shifts the balance. In the early weeks of solids, your baby is mostly tasting and experimenting. A few spoonfuls of pureed vegetables or iron-fortified cereal won’t replace a full bottle. Solid foods supplement milk at this stage rather than adding excess calories on top of it.
As your baby gets more comfortable with solids over the following weeks, you may notice they naturally drink a little less milk per feeding. That’s expected. Formula or breast milk should still be the primary source of nutrition through the first year, but the total ounces per day will slowly decrease as solid food intake increases. There’s no need to force a full bottle if your baby is eating well at meals and showing signs of fullness.
Reading Your Baby’s Hunger and Fullness Cues
The ounce ranges above are guidelines, not targets to hit at every feeding. Your baby is the best judge of how much they need in a given moment. At six months, hunger and fullness cues become easier to read than they were in the newborn stage.
Signs your baby is still hungry include reaching or pointing toward food, opening their mouth when offered a spoon or bottle, getting visibly excited when they see food being prepared, and using hand motions or sounds to signal they want more.
Signs your baby is full include pushing the bottle or food away, closing their mouth when more is offered, turning their head away, and using gestures or sounds that signal “done.” Respecting these cues helps your baby develop healthy self-regulation around eating. If they turn away from the bottle at 5 ounces instead of finishing 8, that’s fine.
What About Water?
Before six months, babies don’t need water at all. Once your baby starts solids around the six-month mark, you can introduce small amounts of plain water. The recommended range is 4 to 8 ounces of water per day between 6 and 12 months. This isn’t a replacement for milk. It’s mostly to help your baby get used to drinking from a cup and to support digestion as they adjust to solid foods. A few sips with meals is plenty.
When Intake Seems Too High or Too Low
Babies go through growth spurts, teething discomfort, and phases of distraction that can all shift how much they drink on any given day. A day or two of lighter or heavier feeding is normal. What matters more is the pattern over a week.
If your baby consistently falls well below 18 to 24 ounces per day, seems unusually lethargic, or isn’t producing enough wet diapers (fewer than six in 24 hours is a common benchmark), that’s worth flagging with your pediatrician. On the other end, a baby who regularly exceeds 32 ounces of formula and still seems hungry after every bottle may benefit from more calorie-dense solid foods rather than additional formula.
Weight gain is the most reliable measure of whether your baby is getting enough. Steady growth along their curve on the pediatrician’s chart matters far more than hitting a specific ounce count each day.