How Much Formula Should Your Baby Drink? Bottle Amounts by Age
"Is my baby eating enough? Am I giving too much?" If those questions cross your mind at every feed, you're in very good company. Here's the good news: there's no magic number of ml, just simple guidelines that will help you make sense of it all — and learn to trust your baby.
The golden rule: your baby is in charge
Before we get to numbers, let's start with the basics: a baby's appetite changes from day to day, just like yours does. One day they drain every bottle and ask for more, the next they leave half behind. That's completely normal. Growth spurts, tiredness, teething, or simply the mood of the day all affect how much they drink.
What matters most isn't hitting a precise ml target — it's learning to read your baby's hunger and fullness cues. A baby who turns their head away, closes their mouth, or lets go of the teat is telling you they've had enough. A baby who fusses, brings their hands to their mouth, or roots around is telling you they're still hungry.
Instead of judging feed by feed, look at the total over 24 hours and across the week. It's far more meaningful: a small morning feed often gets made up for in the evening.
Bottle amounts by age: a quick reference chart
Here are typical reference ranges (not prescriptions!) for a formula-fed baby. Your baby may well drink a little more or a little less and be perfectly healthy.
| Age | Amount per bottle | Bottles per day |
|---|---|---|
| 0 - 1 month | 60 - 90 ml | 6 to 8 |
| 1 - 2 months | 90 - 120 ml | 5 to 6 |
| 2 - 4 months | 120 - 150 ml | 5 |
| 4 - 6 months | 150 - 180 ml | 4 to 5 |
| 6 - 12 months | 180 - 240 ml | 3 to 4 (alongside solids) |
From around 6 months, starting solids gradually takes over part of the job: purées and mashed foods slowly replace some of the milk. That said, milk remains your baby's main source of nutrition throughout the entire first year.
These figures are general averages, not targets to hit. If your baby was born prematurely, has a low birth weight, or is under specific medical follow-up, amounts should be adjusted with your pediatrician or health visitor. When in doubt, they always have the final say.
How do you know your baby is eating enough?
Rather than staring at the ml left in the bottle, look out for these reassuring everyday signs:
- They wet around 5 to 6 nappies a day, with pale urine.
- They have regular bowel movements (frequency varies a lot from baby to baby).
- They're gaining weight steadily and following their growth curve.
- They're alert and active during awake times, and seem content after feeds.
On the flip side, some signs may suggest your baby isn't getting enough: noticeably fewer wet nappies, unusual sleepiness or difficulty waking for feeds, frequent hungry crying even right after a bottle, or a weight curve that plateaus over several weeks.
What if they're drinking too much?
A baby who spits up a lot after every bottle, or seems uncomfortable and bloated, may be drinking a bit too fast or a bit too much. Slightly smaller, more frequent bottles, pauses during the feed, and a good burp are usually all it takes to sort things out.
Common mistakes (and how to avoid them)
- Pushing your baby to finish the bottle. An unfinished bottle isn't a failure! Pressuring them to finish can disrupt their natural ability to regulate their own appetite.
- Comparing with other babies. Your friend's baby drinks 150 ml at 2 months and yours drinks 110 ml? No problem at all, as long as each one follows their own growth curve.
- Increasing amounts too quickly. Crying doesn't always mean hunger: tiredness, the need for closeness, or wanting to suck are just as common.
- Expecting a perfectly regular schedule from day one. In the first weeks, your baby sets the tempo — feeding on demand is the norm.
It's hard to remember who fed what and when — especially at 3am. With an app like Bébou, you log a bottle in one tap, your partner sees it in real time, and you get the weekly average at a glance. No more mental math.
When should you see a doctor?
No need to panic over one refused bottle. But do book an appointment with your pediatrician or family doctor if:
- Your baby refuses several bottles in a row or drinks noticeably less for more than 24 hours.
- They produce very few wet nappies or their urine is dark.
- They have repeated forceful (projectile) vomiting — beyond ordinary spit-up.
- Their weight curve plateaus or dips.
- They have a fever, seem listless, or just aren't their usual self.
Your instinct matters. If something about your baby worries you — even without a specific symptom — get them checked. No healthcare professional will ever blame you for coming in "for nothing".
The takeaway
Bottle amounts by age are guidelines, not rules. Your baby knows how to regulate their own appetite: your job is to offer, not to impose. Watch their cues, follow their growth curve, and remember that day-to-day variations are part of the deal. And on the days you doubt yourself, keep this in mind: a baby who's growing, wetting nappies, and full of energy during awake time is a baby who's eating well.
This article is informational and does not replace medical advice. If you have any concern about your baby's health, talk to your pediatrician.
Frequently asked questions
How many ml should a newborn drink per bottle?
In the first weeks, a newborn typically drinks between 60 and 90 ml per bottle, spread over 6 to 8 feeds a day. In the very first days, amounts are even smaller (a newborn's stomach is tiny!) and increase gradually. Follow your baby's rhythm and the guidance from the hospital or your pediatrician.
My baby never finishes their bottles — should I worry?
Not as long as they're gaining weight and wetting plenty of nappies. Some babies simply prefer smaller, more frequent feeds. Never force them to finish: babies naturally regulate their appetite. Look at the 24-hour total rather than each individual bottle.
Should I wake my baby for a feed?
In the first weeks, if your baby sleeps more than 4 to 5 hours straight and their weight gain is still fragile, gently waking them to feed is often advised. Once their weight curve is well established, most babies can follow their own rhythm. Check this with your pediatrician based on your baby's situation.
How do I know when to increase the amounts?
If your baby consistently finishes every bottle and keeps rooting for more, seems frustrated at the end of feeds, or asks to eat earlier than usual for several days in a row, try offering 30 ml more and observe. If they drink it happily without extra spit-up, it was probably the right call.
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