Most newborns start with just 1 to 2 teaspoons per feeding and work up to about 32 ounces a day by the time they’re six months old. The exact amount changes quickly in the first year, so knowing what to expect at each stage helps you gauge whether your baby is getting enough.
The First Few Days: Smaller Than You Think
A newborn’s stomach at birth is roughly the size of a toy marble, holding only about 1 to 2 teaspoons of milk. This is why brand-new babies feed so frequently, sometimes every one to two hours, and why the small amounts of colostrum a breastfeeding parent produces in those first days are perfectly matched to what the baby can handle.
By day 10, the stomach has grown to about the size of a ping-pong ball, holding around 2 ounces per feeding. Feedings are still frequent at this point, typically 8 to 12 times in 24 hours for breastfed babies and slightly less often for formula-fed babies. The rapid growth of stomach capacity in these early days means feeding patterns shift noticeably from one week to the next.
One to Six Months: The Formula
A reliable rule of thumb for formula-fed babies: plan for about 2.5 ounces of formula per day for every pound of body weight. A 10-pound baby, for example, would take in roughly 25 ounces across the day. This calculation stays useful until the baby hits the general daily ceiling of about 32 ounces, which most babies reach somewhere around four to six months.
Between two and four months, most formula-fed babies settle into a more predictable routine and drop the middle-of-the-night feeding. They’re taking in more per session during the day, and their sleep stretches get longer as a result. By six months, a typical feeding is 6 to 8 ounces, and most babies eat four or five times in 24 hours.
Breastfed babies are harder to measure in ounces since milk transfers directly. Instead, you track wet diapers (at least six a day after the first week) and steady weight gain as signs that intake is on track. Breastfed babies also tend to self-regulate their intake more precisely than bottle-fed babies, so feeding on demand remains the best approach.
Six to Twelve Months: Milk Plus Solids
When solid foods enter the picture around six months, milk doesn’t disappear from the menu. It remains the primary calorie source. Babies between 8 and 12 months need roughly 750 to 900 calories a day, and about 400 to 500 of those calories should still come from breast milk or formula. That works out to around 24 ounces of milk daily.
As your baby gets more comfortable with solids and starts eating a wider variety of foods, milk intake naturally decreases a bit. This is gradual, not sudden. Most babies still rely heavily on milk through their entire first year, with solids playing a supporting role that slowly grows.
When Water Comes In
Starting around six months, you can offer small sips of water alongside meals. The recommended amount is 4 to 8 ounces per day (about half a cup to one cup) between 6 and 12 months. Before six months, babies don’t need water at all. Breast milk and formula provide all the hydration they need, and giving water too early can fill their tiny stomachs without providing calories or nutrients.
An open cup, sippy cup, or straw cup all work well for introducing water. The goal at this stage isn’t hydration so much as practice with the cup itself.
After Twelve Months: The Milk Limit
Once your child transitions to cow’s milk around their first birthday, the American Academy of Pediatrics recommends no more than 16 ounces (2 cups) per day. This limit exists for an important reason: too much cow’s milk can cause iron-deficiency anemia. Milk is low in iron and can interfere with iron absorption, and toddlers who fill up on milk often eat less iron-rich food. Many toddlers exceed this 16-ounce limit without parents realizing it, so it’s worth tracking.
Growth Spurts Change Everything Temporarily
Just when you think you have a feeding routine figured out, a growth spurt can throw it off. These typically happen around 2 to 3 weeks, 6 weeks, 3 months, and 6 months, though every baby’s timing varies. During a growth spurt, babies get fussier and want to feed more often, sometimes as frequently as every 30 minutes for breastfed babies. This cluster feeding usually lasts two to three days and then settles back down. It doesn’t mean your milk supply is dropping or that your baby isn’t getting enough. It means they’re growing.
How to Tell If Your Baby Is Getting Enough
Ounce targets are useful guidelines, but your baby’s own signals are the most reliable indicator. In the first five months, hunger looks like hands going to the mouth, head turning toward the breast or bottle, lip smacking, and clenched fists. Fullness looks like closing the mouth, turning away from the breast or bottle, and relaxed, open hands.
After six months, the cues shift. Hungry babies reach for food, point at it, open their mouths eagerly when a spoon appears, and get visibly excited at the sight of a meal. Full babies push food away, close their mouths when food is offered, turn their heads, or use hand motions and sounds to signal they’re done. Respecting these cues, rather than pushing a baby to finish a set number of ounces, helps them develop healthy self-regulation around eating from the very beginning.
Quick Reference by Age
- Birth to day 3: 1 to 2 teaspoons per feeding, 8 to 12 feedings per day
- Day 10: About 2 ounces per feeding
- 1 to 2 months: 2.5 ounces per pound of body weight per day, spread across frequent feedings
- 2 to 4 months: Similar daily totals, fewer overnight feedings
- 6 months: 6 to 8 ounces per feeding, 4 to 5 feedings per day (up to 32 ounces total), plus early solids
- 8 to 12 months: About 24 ounces of breast milk or formula daily, with increasing amounts of solid food
- 12+ months: No more than 16 ounces of cow’s milk per day