How much formula should I feed my newborn?

Q: How much formula should I feed my newborn?

First week: 1 to 2 oz (30 to 60 ml) per feed, every 3 to 4 hours. From there, about 2.5 oz per pound of body weight per day, divided across 6 to 10 feeds, with a ceiling of roughly 32 oz in 24 hours. Feed to hunger cues rather than to the number. In the first few weeks, wake a newborn who has slept past 4 to 5 hours and offer a bottle.

By María López Botín · Mother of 2, researching infant formula and infant nutrition since 2018

Short version, for the parent reading this at 3am: in the first week, 1 to 2 oz per feed, every 3 to 4 hours. After that the number tracks your baby's weight rather than the calendar, and there is one rule about waking a newborn that most first-time parents have never been told.

The volume table is a sanity check after the feed, not a target during it. These are the checks that tell you something at 3am.

The number, by weight

The AAP's rule of thumb is about 2.5 oz (75 ml) of formula per pound of body weight per day, with a ceiling of roughly 32 oz (960 ml) in 24 hours for a healthy term infant.

So for a baby of:

Weight	Daily total	At 8 feeds	At 6 feeds
7 lb	~17 oz	~2 oz	~3 oz
8 lb	~20 oz	~2.5 oz	~3.5 oz
10 lb	~25 oz	~3 oz	~4 oz
12 lb	~30 oz	~3.5 oz	~5 oz

Two caveats before you reach for a calculator. The first week is lower than the formula predicts — the AAP puts it at no more than about 1 to 2 oz per feed regardless of weight, because a newborn's stomach is still small and feeds are frequent rather than large. And the 32 oz figure is a ceiling, not a target; a baby drinking noticeably more than that consistently is a conversation with a pediatrician, not a sign of a hungry baby who needs bigger bottles.

The full progression from here through 12 months is in formula volume by age.

The rule nobody mentions: wake a newborn who sleeps too long

This is the part that matters most and gets said least, and it is the single piece of newborn feeding advice that most first-time parents reach the second week without ever having heard.

In the first few weeks, if your newborn sleeps longer than about 4 to 5 hours, wake them and offer a bottle. A newborn who sleeps through feeds is not a baby who has learned to self-regulate; small babies who miss feeds can slide quietly into poor intake, and the sleepiness that follows makes it worse rather than better.

This inverts the advice parents get about older babies, where you absolutely do not wake a sleeping child. The distinction is age, and it is one of the few genuinely newborn-only rules in infant feeding. It typically stops applying once your pediatrician is satisfied with weight gain, which is one of the things well-child visits in the first fortnight are for.

Feed the baby, not the number

Every figure above is a population average drawn from thousands of babies, which means it describes a statistical infant rather than the one in front of you. Your baby has not read them.

The right way to use the table is as a sanity check after the fact, not as a target during the feed. Newborns show hunger before crying — rooting, hands to mouth, stirring and mouthing — and they show fullness by slowing down, turning away, and going loose-limbed. Those cues outrank the ounces printed on the bottle.

The specific failure to avoid is pushing the last half-ounce because the bottle is not empty. It is the most common route to overfeeding, and it teaches a baby to ignore the fullness signal that is doing exactly what it should. Paced bottle feeding is the technique that makes this easier: slow-flow nipple, bottle held level rather than tipped up, pauses every ounce or two.

How to tell it is working, without weighing anything

Three checks, in order of how quickly they tell you something:

Wet nappies. From about the end of the first week, 4 to 8 in 24 hours. This is the fastest reassurance available at home and it is the one to reach for at 3am.
Behaviour between feeds. Some fussiness is normal. Persistent, inconsolable crying between feeds is not, and is worth a call.
Weight, at well-child visits. Newborns are expected to lose some weight in the first days and then regain it, and the trajectory matters far more than any single figure. This is your pediatrician's measurement to interpret, not one to chase at home with a bathroom scale.

When to stop reading and call someone

Do not use this page to talk yourself out of a call. Contact your pediatrician if you see:

Fewer than 4 wet nappies in 24 hours after the first week
A baby who is difficult to wake, or who stays sleepy through feeds
Persistent refusal of feeds, or vomiting after most of them
No weight gain, or continued loss, past the first week or two

None of these are about the ounces. They are about a baby whose feeding is not going as it should, and the volume question is downstream of that.

Frequently asked questions

How many oz should a newborn drink?

In the first week, about 1 to 2 oz (30 to 60 ml) per feed, every 3 to 4 hours. After that the amount tracks weight rather than age: roughly 2.5 oz per pound of body weight per day, divided across 6 to 10 feeds, with a ceiling of about 32 oz in 24 hours. A 10 lb baby therefore lands near 25 oz a day, which is about 3 oz per bottle at 8 feeds.

Should I wake my newborn to feed?

Yes, in the first few weeks. If a newborn sleeps longer than about 4 to 5 hours, wake them and offer a bottle. This is the opposite of the advice for older babies, and it exists because small babies who miss feeds can slide into poor intake, with the resulting sleepiness making it worse rather than better. It stops applying once your pediatrician is satisfied with weight gain.

How do I know if my newborn is getting enough formula?

The fastest home check is wet nappies: 4 to 8 in 24 hours from about the end of the first week. Then behaviour between feeds, where some fussiness is normal but persistent inconsolable crying is not. Then weight at well-child visits, which is the measurement that actually settles it and belongs to your pediatrician rather than a home scale.

What if my baby wants more than the recommended amount?

Occasional bigger feeds are normal, particularly in the evening, when cluster feeding is expected. What warrants a conversation is consistently exceeding about 32 oz in 24 hours, which is a ceiling rather than a target. Before increasing volume, check the flow rate of the nipple and the pace of feeding: a fast nipple can empty a bottle before the fullness signal arrives, which reads as a hungrier baby than you have.

Should I finish the bottle if my baby stops drinking?

No. Pushing the last half-ounce because the bottle is not empty is the most common route to overfeeding, and it trains a baby to override the fullness cue that is working correctly. Slowing down, turning away and going loose-limbed mean the feed is over. Formula left in a bottle the baby has drunk from must be discarded within an hour and not refrigerated.

How often should a newborn feed?

Every 3 to 4 hours in the early weeks, which works out to roughly 6 to 8 feeds in 24 hours, though newborns commonly cluster several feeds close together in the evening and then sleep a longer stretch. Cluster feeding is normal and self-regulating rather than a sign of insufficient volume. The interval matters most as an upper bound: past 4 to 5 hours in the first few weeks, wake the baby.

Does the amount change if I use European formula?

Not meaningfully. Both EU and US infant formulas are made to a similar caloric density, close to 20 kcal per ounce when prepared as directed, so the volume guidance holds either way. What does change the maths is preparation: follow the scoop-to-water ratio printed on your tin rather than converting from another brand, since scoop sizes differ between manufacturers and even between stages.

Sources

AAP HealthyChildren, amount and schedule of formula feedings — the 2.5 oz per pound rule, the roughly 32 oz daily ceiling, the 1 to 2 oz first-week figure, and the guidance to wake a newborn who sleeps past 4 to 5 hours in the first few weeks. healthychildren.org
AAP formula-feeding guidance — general formula-feeding practice, including feeding to cues rather than to a fixed volume. aap.org
FDA, safe preparation and storage of infant formula — the rule that a bottle the baby has drunk from is discarded within one hour and not refrigerated. fda.gov

This site provides research and comparisons, not medical advice. Consult your pediatrician before changing your baby's formula.