How Much Should a Newborn Eat at Each Feeding?
Share
Newborns start with surprisingly small feedings. During the first day or two, a bottle-fed newborn may take only about ½ ounce (15 mL) at a feeding. After that, many newborns take about 1–2 ounces (30–60 mL) per feeding, with the amount gradually increasing as they grow. Breastfed babies are usually fed according to hunger cues rather than measured ounces.
- Newborns need small, frequent feedings.
- During the first day or two, some bottle-fed babies take only about ½ ounce at a feeding.
- After the first couple of days, 1–2 ounces per bottle is common for many newborns.
- The amount usually increases gradually during the first month.
- Breastfeeding parents generally do not need to know exactly how many ounces their baby takes at the breast.
- Hunger and fullness cues are more useful than trying to make a baby finish a predetermined amount.
- Weight gain and diaper output help tell us whether a newborn is getting enough overall.
One of the most common worries during the first weeks with a newborn is whether the baby is eating enough.
The numbers printed on a bottle can make feeding seem as though there should be one exact amount every newborn needs. There isn't.
A baby's feeding needs change quickly during the first days and weeks of life. The goal is not to make every baby finish the same number of ounces. The goal is to provide enough milk for healthy hydration and growth while allowing the baby to respond naturally to hunger and fullness.
How Much Does a Newborn Eat in the First Few Days?
Newborns generally begin with very small feedings.
During the first day or two of life, a bottle-fed baby may take only about ½ ounce (15 mL) at some feedings. After those first couple of days, many newborns take approximately 1–2 ounces (30–60 mL) at each feeding.
Those amounts increase as the baby's stomach capacity, appetite, and nutritional needs increase.
Parents should not be concerned simply because their brand-new baby is not immediately drinking several ounces at every feeding. Feeding amounts during the first days are supposed to be small.
How Much Formula Should a Newborn Drink?
For a healthy, full-term formula-fed newborn, 1–2 ounces (30–60 mL) per feeding is a common amount after the first day or two.
As the first month progresses, feeding volumes usually increase. By the end of the first month, many babies are taking approximately 3–4 ounces per feeding.
These are guidelines—not targets that every baby must reach at exactly the same age.
One newborn may prefer somewhat smaller, more frequent bottles. Another may comfortably take more and go longer between feedings. Your baby's growth and overall feeding pattern matter more than matching a chart perfectly.
What About a Breastfed Newborn?
Breastfeeding is different because parents usually cannot see exactly how many ounces their baby drinks during a nursing session.
Fortunately, you generally do not need to.
During the first days, a breastfeeding newborn receives relatively small amounts of colostrum. As milk production increases, the amount available to the baby increases as well.
Instead of measuring ounces, pediatricians look at how frequently the baby nurses, whether swallowing can be heard or seen, whether the breasts feel softer after feeding, urine and stool output, and—most importantly—whether the baby's weight is progressing appropriately.
Whether your baby receives breast milk or formula, responsive feeding can help you recognize when your baby wants more and when the feeding is finished.
Signs of hunger can include:
- Rooting or turning toward the breast or bottle
- Opening the mouth
- Bringing hands toward the mouth
- Lip smacking
- Sucking movements
- Increasing alertness or restlessness
Crying is usually a later hunger cue, so feeding before your baby becomes very upset can make the feeding easier.
How Do I Know When My Baby Is Full?
Newborns can also tell us when they have had enough.
A baby who is becoming full may slow down sucking, release the nipple, turn away from the bottle or breast, relax the hands and body, or fall asleep.
If your baby clearly loses interest in the bottle, there is usually no reason to insist that the remaining milk be finished simply because it was prepared.
Learning to respect fullness cues is an important part of responsive feeding.
Should I Make My Newborn Finish the Bottle?
No.
The amount prepared in the bottle is not a feeding requirement.
Some feedings will naturally be larger than others. If your baby turns away, stops sucking, relaxes, or repeatedly refuses the nipple, the feeding may simply be finished.
Repeatedly encouraging a baby to continue after clear fullness cues can lead to overfeeding.
Can I Add Extra Formula Powder to Help My Baby Grow?
No—unless your baby's medical team has specifically prescribed a different formula concentration.
Infant formula should be prepared according to the manufacturer's directions using the exact amount of water and formula specified on the container.
Adding extra powder can make formula too concentrated, while adding too much water can dilute important nutrients and electrolytes.
If your pediatrician believes your baby needs a higher-calorie feeding plan, you should receive specific instructions for how to prepare it safely.
How Can I Tell Whether My Newborn Is Getting Enough?
One feeding does not tell the whole story.
Pediatricians look at the baby's feeding pattern over time, urine and stool output, hydration, behavior, and weight.
For a breastfed newborn, by about 5–7 days of age, having at least six wet diapers per day with pale or nearly colorless urine is one reassuring sign that milk intake is becoming established.
Weight is especially useful because newborns normally lose some weight after birth and then begin gaining again. Your baby's early pediatric visits allow the doctor to determine whether feeding is supporting appropriate growth.
Contact your pediatrician if your newborn:
- Consistently takes much less than expected
- Is difficult to wake for feedings
- Has a weak suck or difficulty latching
- Frequently refuses to eat
- Has fewer wet diapers than expected
- Vomits most or all of repeated feedings
- Appears increasingly yellow or jaundiced
- Seems persistently hungry despite frequent feeding
- Is not gaining weight as expected
A feeding assessment and weight check can often identify the problem quickly.
When Is a Feeding Problem Urgent?
Seek prompt medical evaluation if your newborn is too sleepy or weak to feed, is very difficult to awaken, has trouble breathing during feeding, has signs of significant dehydration, repeatedly vomits and cannot keep feeds down, or looks seriously ill.
A rectal temperature of 100.4°F (38°C) or higher in a baby 3 months old or younger also requires prompt medical evaluation.
Parents naturally focus on ounces because ounces are easy to measure. But I never judge a newborn's feeding from one bottle or one nursing session.
The better question is: How is the baby doing overall? Feeding effectiveness, wet diapers, alertness, satisfaction after feeding, and especially weight gain tell us far more than whether every bottle contains exactly the “right” number of ounces.
Clear Answers for the First Weeks With Your Baby
Join the Pediatric Parent Guide Parent Club for practical pediatric guidance from Dr. G, new parent resources, and updates when new articles and tools are added.
Join the Parent Club →References & Medical Sources
- American Academy of Pediatrics, HealthyChildren.org. How Often and How Much Should Your Baby Eat?
- American Academy of Pediatrics, HealthyChildren.org. How to Tell if Your Breastfed Baby Is Getting Enough Milk
- American Academy of Pediatrics, HealthyChildren.org. How Much Formula Does My Baby Need?
- American Academy of Pediatrics, HealthyChildren.org. How Do I Mix and Serve Infant Formula for My Baby?
Related Parent Resources
Find more pediatric guidance about newborn feeding, diapers, bathing, sleep, and common first-week concerns in our Newborn Care Library →
Medical Disclaimer
This article provides general educational information and is not a substitute for medical advice, diagnosis, or treatment from your child's pediatrician or another qualified healthcare professional. Newborn feeding needs vary based on gestational age, birth weight, medical conditions, feeding method, growth, and other individual factors. Premature babies and babies with medical or feeding problems may require a specific feeding plan. If you are concerned about your baby's feeding, hydration, weight gain, or health, contact your pediatrician. If your baby appears seriously ill or you believe there is an emergency, seek immediate medical care.