How much should a newborn eat

CDC's breastfeeding page, updated April 16, 2026, says a baby will breastfeed about 8 to 12 times in 24 hours. In the first days that can be as often as every 1 to 3 hours. Through the first weeks and months, most exclusively breastfed babies feed every 2 to 4 hours. Some cluster feed every hour. Some sleep a stretch of 4 to 5 hours. CDC also says most babies who are getting breast milk should not be given infant formula in the first few days unless a clinician is helping with a supply problem.

CDC's formula page, updated April 21, 2026, uses the same 8 to 12 feeds in 24 hours when a newborn is on formula only. Offer 1 to 2 ounces every 2 to 3 hours in the first days, and give more if hunger cues continue. Over the first weeks and months, most formula-fed infants feed about every 3 to 4 hours. A sleepy baby may need a diaper change, a pat, or undressing before they will eat.

AAP HealthyChildren, updated April 2, 2024, answers the same question by feeding method. Breastfed newborns usually nurse about every 2 hours from the start of one feed to the next, so 10 to 12 sessions in 24 hours is the norm there. Most breastfed infants take about 1 ounce in the first few weeks, and that amount rises slowly. It is not a one month target you can see in a bottle. Bottle-fed newborns may take half an ounce per feed on the first day or two, then 1 to 2 ounces. Eight feeds in 24 hours is the minimum AAP describes for a bottle. By the end of the first month, most bottle-fed babies consume at least 3 or 4 ounces per feeding, about every 3 to 4 hours.

How often newborns eat

Feeding frequency for newborns is a range, not a buzzer. Put the CDC and AAP numbers next to each other and they agree on the day: about 8 to 12 feeds. They do not agree on a single gap. CDC's breastfed range in the first weeks is every 2 to 4 hours. AAP's breastfed norm is closer to every 2 hours. Use the tighter gap if the baby is sleepy, early, or not making wet diapers. Stretch toward 3 or 4 hours only when the baby is waking, feeding well, and the clinician is happy with the weight.

Hunger usually shows up before the cry. AAP lists licking lips, a tongue out, rooting, a hand to the mouth over and over, an open mouth, fussiness, and sucking on whatever is nearby. Crying is a late cue, and a crying baby is harder to latch or to settle on a bottle. Sucking is not always hunger. Sometimes the baby wants to be held or changed. If you are unsure, offer a feed. You can stop when they pull off and look done.

How much a one month old should eat

For a bottle, use AAP's end-of-month figure: at least 3 or 4 ounces a feed, about every 3 to 4 hours. That is the direct answer to how much a one month old should eat when the milk is formula. CDC does not print a different ounce chart for day 30. It says the belly is bigger than in the first days, the gap between feeds grows, and the baby stops when full. If a 4 ounce bottle comes back unfinished and the baby is calm, that feed is done. If they still root after 4 ounces, offer more. AAP notes that bottles are easier to overdo than the breast, because the milk comes faster. Stomach pain, gas, and a lot of spit-up are reasons to pause and talk with the pediatrician, not reasons to keep topping off.

AAP's published amount for a breastfed baby in the first few weeks is about 1 ounce, rising over time, and the frequency stays high. There is no separate one month ounce target for the breast. CDC's job for that baby is still about 8 to 12 feeds in 24 hours, on cue. A weighted feed with a lactation visit is how you measure a breastfeed.

Wet diapers and vitamin D

AAP uses diapers as the home check. In the first few days, expect 2 to 3 wet diapers a day. After the first 4 to 5 days, expect at least 5 to 6 wet diapers a day. By the fourth day, expect at least 4 stools a day. Stool counts vary more than wet counts, and breastfed and formula-fed babies do not match each other. The pediatrician plots weight on a growth chart. A baby who stays on their curve is getting enough, even if one afternoon looked light.

CDC ties vitamin D to how much formula is in the day. A baby fed only breast milk, or getting less than 32 ounces of formula a day, needs vitamin D drops starting shortly after birth. A baby getting about 32 ounces or more of formula does not need an extra drop, because formula is already fortified. Ask the pediatrician which drop if you are unsure. This page does not pick a brand or a dose.

Try this

1. Count feeds for one full day. The useful number is 8 to 12, not a perfect gap.
2. Offer the breast or the bottle at the early cues, before the hard cry.
3. For formula, start at 1 to 2 ounces in the first days and let hunger decide the top-up.
4. By the end of the first month, expect bottle feeds around 3 or 4 ounces if AAP's typical baby matches yours.
5. Write down wet diapers in week one and bring that note to the weight check.

Wake a sleepy newborn who is not yet feeding at least every 2 to 4 hours, the way CDC describes. A baby born a little early can be too sleepy to ask. That is a pediatrician conversation, not a schedule you stretch so you can sleep.

What changes after the first birthday

This handbook's food pages start at 12 months, when formula can move toward plain milk and the family table. Read milk after the first birthday, the toddler nutrition plate, and night bottles after 12 months. The short version of those pages lives on the food pillar. Newborn ounces do not carry over. A toddler is not a bigger newborn on the same bottle math.

If you are still counting the pregnancy, the pregnancy due date calculator uses Naegele's rule, 280 days from the last period. After the birth, start here opens the toddler seasons.

Check in if

Call your pediatrician if weight gain stalls, wet diapers fall off after the first days, or feeding hurts. A content baby who is growing and making wet diapers is usually getting enough.

Related ages: 12-18 months. Pillars: Food.

Questions parents ask

Sources

1. CDC. How much and how often to breastfeed. Updated April 16, 2026. cdc.gov
2. CDC. How much and how often to feed infant formula. Updated April 21, 2026. cdc.gov
3. American Academy of Pediatrics. How often and how much should your baby eat? HealthyChildren.org. Updated April 2, 2024. HealthyChildren.org