A 4-month-old typically drinks 24 to 32 ounces of breast milk or formula per day, spread across four to six feedings. Most babies this age take about 6 to 7 ounces per feeding, though the exact amount varies from one baby to the next.
Daily Totals and Per-Feeding Amounts
At 4 months, a baby’s stomach can hold roughly 6 to 7 ounces at a time, which is why most feedings land right in that range. A general guideline is that infants need about 2.5 ounces of formula per pound of body weight each day. So a 14-pound baby would need around 35 ounces, while a smaller 12-pound baby would need closer to 30 ounces. The upper limit pediatricians typically recommend is 32 ounces of formula in 24 hours.
Most 4-month-olds eat five to six times a day, roughly every three to four hours. Some babies prefer slightly smaller, more frequent feedings, while others go longer between bottles and take more at each sitting. Both patterns are normal as long as the total daily intake stays in range.
Breastfed vs. Formula-Fed Babies
Measuring intake is straightforward with formula, but breastfed babies don’t come with a volume gauge. Exclusively breastfed infants may nurse 8 to 12 times in 24 hours, often every 2 to 4 hours, including overnight. Because breast milk is digested faster than formula, breastfed babies tend to eat more frequently and take a bit less per session.
If you’re offering pumped breast milk in a bottle, the same hunger cues apply, but there’s one important difference: avoid pushing a baby to finish every bottle. Breastfed babies self-regulate their intake more precisely than formula-fed babies, and routinely emptying bottles of pumped milk can lead to overfeeding and excess weight gain. Let your baby decide when the feeding is done.
How to Tell Your Baby Is Getting Enough
The most reliable indicator is weight gain. A healthy 4-month-old gains about 1 to 1.25 pounds per month. Your pediatrician tracks this on a growth curve at each visit, and steady progress along the curve matters more than hitting a specific number.
Between visits, wet diapers are the easiest day-to-day check. By this age, you should see at least six wet diapers in 24 hours. Bowel movements are less predictable. Some 4-month-olds poop several times a day, while others go several days (or even up to a week) between bowel movements. Infrequent pooping alone isn’t a concern as long as your baby is gaining weight and producing plenty of wet diapers.
Reading Hunger and Fullness Cues
Rather than feeding on a rigid schedule, it helps to watch your baby’s signals. At 4 months, hunger looks like hands going to the mouth, head turning toward the breast or bottle, lip smacking or licking, and clenched fists. Crying is actually a late hunger cue. If you catch the earlier signs, feedings tend to go more smoothly.
Fullness is just as important to recognize. A baby who closes their mouth, turns away from the bottle or breast, or relaxes their hands is telling you they’re done. Respecting these signals helps your baby develop healthy self-regulation around eating, even at this early stage.
The 4-Month Growth Spurt
Many babies go through a growth spurt around 4 months that can temporarily change their feeding pattern. You might notice your baby suddenly wanting to eat more often, seeming hungrier than usual, or waking more at night to feed. This is normal and typically lasts a few days to a week. During a growth spurt, offer feedings when your baby shows hunger cues rather than trying to stick to the previous schedule. Intake usually settles back down once the spurt passes.
Should You Start Solids at 4 Months?
You might be wondering whether it’s time to introduce solid food. The current recommendation from both the CDC and the American Academy of Pediatrics is to wait until about 6 months. Introducing solids before 4 months is not recommended at all. Between 4 and 6 months, some pediatricians may give the green light if a baby shows strong signs of readiness (sitting with support, showing interest in food, good head control), but breast milk or formula should remain the primary source of nutrition through at least the first year regardless of when solids begin.
At 4 months, milk alone provides everything your baby needs. If your baby seems hungrier than usual, the answer is more milk, not cereal in a bottle or early solids.