A 5-month-old typically needs 24 to 32 ounces of breast milk or formula per day, spread across 4 to 6 feedings. The exact amount depends on your baby’s weight, whether they’re breastfed or formula-fed, and their individual appetite. At this age, breast milk or formula is still your baby’s only source of nutrition, so getting the volume right matters.
Formula-Fed Babies: Daily and Per-Feeding Amounts
A helpful rule of thumb for formula-fed babies: multiply your baby’s weight in pounds by 2.5 to get their approximate daily intake in ounces. A 15-pound 5-month-old, for example, would need roughly 37.5 ounces by that math, but most pediatric guidelines cap the recommendation at about 32 ounces per day. That upper limit exists because formula is fortified with all the nutrients your baby needs at that volume, and consistently exceeding it can lead to excessive weight gain.
At 5 months, most formula-fed babies drink 6 to 8 ounces per feeding, with 4 to 5 feedings in a 24-hour period. Some babies prefer smaller, more frequent bottles, while others consolidate into fewer, larger feeds. Both patterns are normal as long as the daily total falls in the expected range.
Breastfed Babies: What to Expect
Breastfed 5-month-olds generally take in 24 to 30 ounces per day. If you’re nursing directly, you won’t know the exact volume, and that’s fine. Breastfed babies are efficient self-regulators, so following their hunger cues is the most reliable guide.
If you’re pumping and bottle-feeding breast milk, individual feedings typically run 3 to 4 ounces each. Breast milk is digested faster than formula, so breastfed babies often eat more frequently, sometimes 6 to 8 times per day, with smaller volumes at each session. The daily total still lands in a similar range. One note: babies who drink less than 32 ounces of formula per day, or who are exclusively breastfed, need a vitamin D supplement. Formula contains added vitamin D, but breast milk does not provide enough on its own.
Reading Your Baby’s Hunger Cues
Ounce targets are useful guidelines, but your baby’s own signals are the best feeding tool you have. At 5 months, hunger looks like hands going to the mouth, head turning toward the breast or bottle, and lip smacking or licking. Clenched fists are another early hunger signal that’s easy to miss.
When your baby is full, they’ll close their mouth, turn their head away from the bottle or breast, and visibly relax their hands. Pushing the nipple out with their tongue is another clear stop sign. Trying to coax a baby into finishing a bottle after these signals can override their natural ability to self-regulate, which matters for healthy eating habits long-term. Some feedings will be short and light, others longer and heavier. That variation is completely normal.
Growth Spurts and Temporary Appetite Changes
If your 5-month-old suddenly seems insatiable, a growth spurt is the likely explanation. Babies go through several growth spurts in the first year, and each one brings a noticeable spike in hunger along with fussiness and disrupted sleep. These bursts typically last up to three days, then appetite returns to its usual pattern.
During a growth spurt, follow your baby’s lead and offer extra feedings rather than trying to stick to a rigid schedule. There’s no set number of additional ounces to aim for. Your baby will take what they need and settle back to normal once the spurt passes.
Night Feedings at 5 Months
Most 5-month-olds still wake at least once overnight to eat, though the frequency varies widely. Babies wake at night for both hunger and comfort during the first year, and it can be hard to tell the difference. As a general pattern, overnight wake-ups for feeding become less frequent as babies get older and take in more calories during the day.
Formula-fed babies tend to go longer stretches at night because formula digests more slowly than breast milk. For formula-fed babies, phasing out night feeds is reasonable to consider starting around 6 months. Breastfed babies may continue needing night feeds longer. At 5 months specifically, night feedings still count toward your baby’s total daily intake, so there’s no reason to rush dropping them.
Solid Foods: Not Quite Yet
Five months is a common age for parents to start wondering about solids. The American Academy of Pediatrics and the Dietary Guidelines for Americans both recommend introducing solid foods at about 6 months. Starting before 4 months is not recommended, and most babies aren’t developmentally ready before 6 months. Signs of readiness include sitting with minimal support, showing interest in food, and being able to move food to the back of the mouth rather than pushing it out with their tongue.
At 5 months, your baby’s entire caloric and nutritional needs are still covered by breast milk or formula. If your baby seems hungrier than usual, the answer is more milk or formula, not early introduction of purées or cereal. Once solids do start around 6 months, they supplement rather than replace liquid feedings. The transition is gradual, and breast milk or formula remains the primary source of nutrition through the first year.