How Much Should a Baby Drink? Bottle Feeding Amounts by Age
5 min read · Updated 2026-06-28 · Reviewed by Daniel Cheng
How many ounces should your baby take? The honest answer is that it varies — amounts are a guide, not a target, and your baby's cues, diapers and weight matter more than hitting a number. Here's a rough age-by-age picture, plus how to read fullness cues and avoid overfeeding. This is general information, not medical advice; your pediatrician will tailor it to your baby.
Feed your baby, not the chart
Babies, like adults, have bigger and smaller appetites from feed to feed. Use the numbers below as a starting range, follow your baby's hunger and fullness cues, and let your pediatrician guide you using growth.
A rough guide by age (per feed)
These are typical ranges for formula or expressed milk by bottle. Babies who breastfeed directly take a similar total over a day, just in their own rhythm.
- First few days: about 15–30 mL (0.5–1 oz) per feed, 8–12 times a day.
- 2 weeks – 1 month: about 60–90 mL (2–3 oz), every 3–4 hours.
- 1–2 months: about 90–120 mL (3–4 oz) per feed.
- 2–4 months: about 120–150 mL (4–5 oz) per feed.
- 4–6 months: about 120–180 mL (4–6 oz) per feed, fewer times a day.
A handy rule of thumb
The AAP suggests formula-fed babies need roughly 160 mL per kg (about 2.5 oz per pound) of body weight per day — up to a maximum of about 960 mL (32 oz) in 24 hours. Spread that across the day's feeds.
Hunger and fullness cues
Let cues — not the line on the bottle — tell you when to start and stop:
- Hungry: rooting, hands to mouth, smacking lips, fussing.
- Full: slowing down, turning away, relaxing the hands, sealing the lips, losing interest.
It's completely fine for your baby to leave milk in the bottle. Never pressure them to finish it.
How to avoid overfeeding
- Try paced bottle feeding — hold the bottle more horizontally and take breaks, so your baby controls the pace.
- Pause and burp partway through.
- Don't prop the bottle — it's a choking and ear-infection risk, and it removes your baby's control.
- Some spit-up is normal; frequent, forceful vomiting is worth mentioning to your pediatrician.
Expressed breast milk is a bit different
Babies fed expressed breast milk often take smaller bottles than formula-fed babies — roughly 30 to 45 mL (1 to 1.5 oz) for each hour since the last feed — because breast milk digests quickly and supply self-regulates. Look at the daily total and your baby's contentment, not a fixed per-bottle number.
When to check with your pediatrician
- Your baby isn't gaining weight as expected, or has fewer wet diapers.
- Forceful, projectile vomiting after feeds.
- Consistently refusing feeds, or seeming hungry even after full feeds.
- Any worry about feeding — it's always worth a call.
Log it in one tap
Hagu's bottle quick-picks log the amount in one tap and total it for the day, shared with your partner in real time — so you can see intake at a glance and bring accurate numbers to checkups.
Frequently asked questions
How many ounces should a newborn drink per feed?
Often about 15–30 mL (0.5–1 oz) in the first days, rising to about 60–90 mL (2–3 oz) by 2–4 weeks. Follow your baby's cues and your pediatrician's guidance.
How much formula does my baby need per day?
A common guide is about 160 mL per kg (2.5 oz per pound) of body weight per day, up to a maximum of about 960 mL (32 oz) in 24 hours. Your pediatrician adjusts for your baby.
Should I make my baby finish the bottle?
No. Let your baby stop when full — turning away, slowing down, relaxed hands. Forcing the last ounce can lead to overfeeding and discomfort.
Why does my breastfed baby take smaller bottles?
Breast milk digests quickly, so expressed-milk feeds are often smaller — roughly 30–45 mL (1–1.5 oz) per hour since the last feed — than formula feeds. Judge by the daily total and contentment.
Sources
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