A 2-week-old baby typically drinks about 2 to 3 ounces of formula per feeding, with 8 to 12 feedings spread across a 24-hour period. That works out to roughly 16 to 24 total ounces per day, though every baby is a little different. The right amount depends on your baby’s weight, appetite, and hunger cues rather than a rigid schedule.
How to Calculate Your Baby’s Daily Needs
The most reliable way to figure out how much formula your baby needs is by weight. The American Academy of Pediatrics recommends about 2.5 ounces of formula per day for every pound of body weight. So if your 2-week-old weighs 8 pounds, that’s roughly 20 ounces total over 24 hours. A 9-pound baby would need closer to 22.5 ounces.
To figure out how much goes in each bottle, divide that daily total by the number of feedings. If your baby eats 10 times a day and needs 20 ounces total, that’s about 2 ounces per feeding. Some feedings will be a bit more, some a bit less. That’s normal. As a general upper limit, babies should usually take no more than about 32 ounces of formula in 24 hours, though a 2-week-old is nowhere near that ceiling.
Why Feedings Are Small and Frequent
At two weeks old, your baby’s stomach is about the size of a ping-pong ball, holding roughly 2 ounces at a time. This is why newborns need to eat so often. They physically can’t take in large volumes, so they compensate by feeding frequently throughout the day and night. Expecting a 2-week-old to go long stretches between feedings or take big bottles isn’t realistic given the size of their stomach.
Most formula-fed newborns eat 8 to 12 times in 24 hours, which means a feeding roughly every 2 to 3 hours. Some babies cluster their feedings closer together during parts of the day and go slightly longer stretches at other times. Both patterns are fine as long as your baby is gaining weight and producing enough wet and dirty diapers.
Hunger and Fullness Cues to Watch For
Rather than watching the clock or measuring every fraction of an ounce, the best approach is to follow your baby’s signals. Hunger cues in a newborn include putting hands to the mouth, turning the head toward the bottle, and puckering or smacking the lips. Clenched fists are another sign. Crying is actually a late hunger signal, so try to offer the bottle before your baby reaches that point.
Fullness cues are equally important. A baby who is getting satisfied will take longer pauses between sucking. When your baby closes their mouth, turns away from the bottle, or relaxes their hands, those are signs they’ve had enough. It’s fine to stop the feeding at that point, even if there’s formula left in the bottle. Letting your baby decide when they’re done helps prevent overfeeding and teaches healthy self-regulation from the start.
Signs Your Baby Is Getting Enough
The best day-to-day indicator that your baby is well fed is diaper output. By two weeks, you should see 5 to 6 wet diapers and 3 to 4 or more dirty diapers every 24 hours. If you’re unsure whether a disposable diaper is actually wet, pouring 3 tablespoons of water into a clean diaper gives you a reference point for what “sufficiently wet” feels like.
Weight gain is the other key marker. Your pediatrician will track this at well-baby visits. Most newborns lose a small amount of weight in the first few days after birth and regain it by about 10 to 14 days old. After that, steady weight gain of roughly 5 to 7 ounces per week signals that feeding is on track.
Signs of Overfeeding
It’s possible to overfeed a formula-fed baby because the flow from a bottle requires less effort than breastfeeding, making it easier for a newborn to take in more than their stomach can comfortably handle. Signs include excessive spitting up, gassiness, belly discomfort, and unusually loose stools. Overfeeding can also cause more frequent and intense crying, which is easy to mistake for hunger, creating a cycle of feeding and discomfort.
If your baby seems uncomfortable after feedings, try offering slightly less formula and feeding more frequently instead. Paced bottle feeding, where you hold the bottle at a more horizontal angle and allow breaks during the feeding, can also help your baby recognize fullness before overdoing it. The goal is to let your baby set the pace rather than encouraging them to finish a set amount.
How Intake Changes Over the Coming Weeks
At two weeks, 2 to 3 ounces per feeding is typical, but this changes quickly. By one month, many babies take 3 to 4 ounces per bottle. By two months, 4 to 5 ounces is common. As the volume per feeding increases, the number of daily feedings gradually decreases. Your baby will naturally space out feedings as their stomach grows and they can take in more at once.
The 2.5 ounces per pound guideline stays useful throughout the first several months. As your baby gains weight, you simply recalculate. If your baby seems hungrier than usual for a day or two, they may be going through a growth spurt, which is common around 2 to 3 weeks. Offering an extra ounce or an additional feeding during these short periods is perfectly reasonable.