How Much Milk Does a Baby Need?
Last updated June 2026 · Reviewed by Nibli Editorial Team
A simple, age-by-age guide to milk amounts for your baby's first year and beyond, with reassuring signs they're getting enough.
If you've ever stared at a half-finished bottle or wondered whether your breastfed baby is drinking "enough," you are in very good company. Milk is the single most important food for most of your baby's first year, and getting a feel for how much they need can take the guesswork out of feeding.
The honest answer is that there is no perfect number. Babies are individuals, their appetites change day to day, and growth spurts can turn a relaxed feeder into a ravenous one overnight. The amounts in this guide are a helpful starting point and a rough guide, never a strict rule your baby has to hit.
Below you'll find friendly, evidence-based ranges by age for both breast milk and formula, how things shift once solids begin around 6 months, what changes at 12 months, and the everyday signs that tell you feeding is going well. If anything ever feels off, your pediatrician or health visitor is your best partner.
Key takeaways
- Breast milk or formula is the main source of nutrition for most of your baby's first year.
- Breastfed babies feed on demand, often 8 to 12 times a day as newborns; watch baby, not the clock.
- Formula amounts are a guide of roughly 150 to 200 ml per kilogram of body weight per day before solids.
- Around 6 months, solids complement milk gradually and don't replace it; offer water with meals too.
- From 6 to 12 months, milk naturally decreases as your baby eats more solid food.
- From 12 months, whole cow's milk can be a main drink, with a sensible limit of about 350 to 500 ml a day.
- Wet nappies, steady growth, and a content baby are the best signs of enough milk; ask your doctor with any concerns.
Why milk is the main source of nutrition in year one
For most babies, breast milk or infant formula provides nearly all the calories, fluid, and nutrients they need for roughly the first six months of life, and remains the main source of nutrition for much of the first year. It is designed to be complete: the right balance of fat, protein, sugars, vitamins, and minerals for a rapidly growing body and brain.
Major health bodies including the AAP, NHS, and WHO recommend feeding only breast milk or formula for around the first six months, with no need for water, juice, or other foods before then. After solids begin, milk still does the heavy lifting nutritionally; food is added alongside it, not instead of it.
Understanding this helps put feeding amounts in perspective: in the early months, milk is the meal, and your job is mostly to follow your baby's hunger cues and offer it generously.
Breastfeeding: feed on demand, not by the clock
Breastfed babies are best fed on demand, meaning whenever they show hunger cues rather than on a fixed schedule or a set number of ounces. Because breast milk is digested quickly and you can't easily measure what baby takes, counting feeds and watching your baby is far more useful than counting milliliters.
In the early weeks, most newborns feed often, frequently around 8 to 12 times in 24 hours, including overnight. This frequent feeding is normal and helps build your milk supply. As babies grow, feeds often become more efficient and may space out a little, though growth spurts can temporarily ramp them up again.
Trust your baby's lead. A baby who feeds well, settles after most feeds, and is growing steadily is almost certainly getting what they need, even without a single number on a bottle.
- Watch for early hunger cues: rooting, hands to mouth, lip-smacking, and stirring, rather than waiting for crying.
- Offer both breasts at a feed, but let baby finish the first side before switching so they get the richer hindmilk.
- Expect cluster feeding in the evenings and during growth spurts; this is normal, not a sign of low supply.
- Night feeds matter in the early weeks for both nutrition and milk supply.
- If you're worried about supply or latch, a lactation consultant or health visitor can help early.
Formula feeding: rough amounts by age and weight
With formula you can see exactly how much your baby drinks, which is reassuring, but the amounts are still a guide, not a target to force. A common rule of thumb is that a formula-fed baby needs roughly 150 to 200 ml of formula per kilogram of body weight per day (about 2.5 ounces per pound), divided across feeds, until they start solids.
In practice that often looks like small, frequent bottles for newborns that grow larger and less frequent over the first months. Always follow the preparation instructions on your formula tin exactly, and never add extra scoops or water it down.
Let your baby decide when they're done. Pushing a baby to finish a bottle can override their natural fullness cues, so it's fine to stop when they turn away, slow right down, or seem content.
- Newborn (first weeks): often around 60 ml (2 oz) per feed, roughly every 2 to 3 hours.
- Around 1 to 2 months: roughly 90 to 120 ml (3 to 4 oz) per feed, about 6 to 8 feeds a day.
- Around 2 to 4 months: roughly 120 to 180 ml (4 to 6 oz) per feed.
- Around 4 to 6 months: roughly 180 to 240 ml (6 to 8 oz) per feed, fewer times a day.
- Total daily intake commonly settles around 720 to 960 ml (24 to 32 oz) before solids, with wide individual variation.
- These are starting points; appetite varies day to day and your baby's cues come first.
Around 6 months: solids complement milk, they don't replace it
Around 6 months, most babies are ready to start solid foods alongside their usual milk. At first, solids are about exploring tastes and textures and topping up a few key nutrients, especially iron; they are not yet a major source of calories. Milk stays the foundation of your baby's diet.
Offer milk first or as usual, then introduce solids as small, gradual extras, building up over weeks. There's no need to drop milk feeds to make room for food at this stage; the two work together while your baby learns to eat.
Once your baby is eating solids, you can also offer small sips of water with meals from a cup. This helps with hydration and gets them used to drinking from a cup, but it shouldn't replace milk feeds.
- Start with single, iron-rich foods and simple purees or soft finger foods around 6 months.
- Keep usual milk feeds going; reduce them only gradually as solids increase over the following months.
- Offer water in an open or free-flow cup with meals once solids start, not juice or sugary drinks.
- Go at your baby's pace; some eat enthusiastically, others take weeks to get going, and both are fine.
From 6 to 12 months: milk naturally decreases
As your baby moves through the second half of the first year, they'll gradually eat more solid food and, quite naturally, take a little less milk. This is exactly how it's meant to go: food slowly takes on a bigger role while milk eases back, rather than stopping abruptly.
Many babies around 7 to 12 months still take roughly 500 to 600 ml of breast milk or formula a day (about three to four milk feeds), but the exact amount varies a lot. Breastfed babies continue to feed on demand and self-regulate beautifully during this stretch.
By around 12 months, most babies are eating three meals a day plus snacks, and milk has settled into a supporting role. There's no need to rush this transition; let it unfold as your baby's appetite for food grows.
- Expect milk intake to drift down as meals become more substantial and frequent.
- Keep offering a variety of textures and family foods to keep mealtimes interesting.
- Continue water with meals; milk and water are the main drinks babies need this year.
- Some milk feeds, often the morning and bedtime ones, tend to stick around longest, and that's fine.
From 12 months: cow's milk as a main drink
From 12 months, whole (full-fat) cow's milk can be introduced as a main drink for most toddlers. The fat in whole milk supports continued brain growth, so stick with full-fat rather than low-fat or skimmed milk until at least age 2, unless your doctor advises otherwise.
Toddlers don't need huge amounts of milk, and too much can crowd out food and contribute to iron shortfalls. A sensible daily limit is roughly 350 to 500 ml (about 12 to 16 oz) of cow's milk a day, offered alongside balanced meals, with water for thirst between times.
If you're continuing to breastfeed beyond 12 months, that's perfectly healthy too and you can keep going for as long as you and your baby are happy. Cow's milk is simply an option once your toddler is a year old, not a requirement to switch on their first birthday.
- Use whole (full-fat) cow's milk from 12 months to at least 2 years.
- Aim for a sensible limit of around 350 to 500 ml a day so milk doesn't displace iron-rich foods.
- Offer milk in a cup rather than a bottle as your toddler approaches and passes their first birthday.
- Water remains the best drink for thirst between meals; avoid juice and sugary drinks.
- Plant-based "milks" are not nutritionally equivalent to cow's milk for toddlers; ask your doctor before relying on them.
Signs your baby is getting enough milk
Because milk amounts vary so much, the most reassuring evidence comes from your baby rather than from a measuring jug. A baby who is growing steadily, producing plenty of wet nappies, and generally content between feeds is almost always getting enough.
Your pediatrician or health visitor will plot your baby's weight, length, and head circumference on a growth chart over time. Following their own curve is more important than hitting any single percentile, and steady growth is one of the clearest signs that feeding is on track.
Trust the overall picture rather than any single feed. Babies have hungry days and lighter days, just like the rest of us.
- Wet nappies: roughly 6 or more heavy wet nappies a day once feeding is established.
- Steady weight gain and growth following their own line on the chart over time.
- Pale, odourless urine and regular, soft bowel movements appropriate for their age.
- Alert, active, and generally settled and content after most feeds.
- Reaching milestones and showing good muscle tone and skin colour.
When to talk to a doctor about feeding
Most feeding wobbles are normal, but some signs are worth checking with your pediatrician or health visitor. If your baby seems persistently hungry after feeds, isn't gaining weight as expected, or has far fewer wet nappies than usual, reach out for advice rather than waiting.
On the other side, if a baby seems to be overfeeding, frequently spitting up large amounts, or is very uncomfortable, your doctor can help you read cues and find a comfortable rhythm. Never restrict milk or change formula concentration to manage weight without medical guidance.
You know your baby best. If something feels wrong, or you're simply anxious about how feeding is going, it's always reasonable to ask for support. That's exactly what your healthcare team is there for.
- Poor or no weight gain, or weight loss after the early newborn days.
- Very few wet nappies, dark urine, or signs of dehydration like a dry mouth or sunken soft spot.
- Refusing feeds repeatedly, or seeming lethargic and hard to rouse.
- Forceful or frequent vomiting, blood in stool, or persistent feeding distress.
- Any worry about under- or over-feeding; a quick chat can bring big reassurance.
Frequently Asked Questions
How much milk does a newborn need?
Newborns feed little and often. Breastfed newborns typically nurse around 8 to 12 times in 24 hours on demand, while formula-fed newborns often take around 60 ml (2 oz) per feed every 2 to 3 hours in the first weeks. Amounts grow steadily over the following months, so follow your baby's hunger and fullness cues rather than a fixed total.
How do I know if my breastfed baby is getting enough milk?
You can't measure breast milk directly, so look at your baby instead. Plenty of wet nappies (around 6 or more heavy ones a day once feeding is established), steady weight gain along their own growth curve, regular soft stools, and a generally content, alert baby are all reassuring signs. If you're ever unsure, your health visitor or pediatrician can check a weight and put your mind at ease.
How much formula should my baby drink per day?
A common guide is roughly 150 to 200 ml of formula per kilogram of body weight per day (about 2.5 oz per pound), spread across feeds, until solids start. Many babies settle around 720 to 960 ml (24 to 32 oz) a day before solids, but this varies a lot. Always make formula exactly as the tin directs and let your baby stop when they're full rather than pushing the bottle.
Should I wake my baby to feed?
In the very early newborn weeks, especially if your baby is small or not yet back to birth weight, your doctor may advise waking for feeds to make sure they eat often enough. Once your baby is gaining well and growing steadily, most healthy babies can be left to wake on their own for night feeds. Check with your pediatrician if you're unsure what's right for your baby.
When should I start giving solids alongside milk?
Most babies are ready for solids around 6 months, when they can sit with support, hold their head steady, and show interest in food. At first, solids are extras that complement milk, mainly for exploring tastes and adding iron. Milk stays the main source of nutrition, so keep usual feeds going and increase food gradually over the following weeks and months.
Does my baby need less milk once they start solids?
Milk decreases gradually, not all at once. When solids begin around 6 months, keep milk feeds roughly the same at first and let them ease back naturally as your baby eats more food over the next few months. By around 12 months, milk has settled into a supporting role alongside three meals a day, but there's no need to rush dropping feeds.
Can I give my baby water?
Before around 6 months, babies don't need water; breast milk or formula provides all the fluid they need. Once solids start around 6 months, you can offer small sips of cooled water with meals from an open or free-flow cup. This helps with hydration and cup skills but shouldn't replace milk feeds. Avoid juice and sugary drinks.
When can my baby drink cow's milk?
Whole (full-fat) cow's milk can be given as a main drink from 12 months. Before then, cow's milk shouldn't be a main drink because it doesn't have the right nutrient balance, though small amounts in cooked foods like sauces are fine from around 6 months. Stick with full-fat milk until at least age 2 to support continued brain growth.
How much cow's milk should a toddler have?
A sensible guide for toddlers is roughly 350 to 500 ml (about 12 to 16 oz) of whole cow's milk a day, offered alongside balanced meals. Too much milk can fill a toddler up and crowd out iron-rich foods, which can affect iron levels. Offer milk at set times rather than constantly, and use water for thirst between meals.
What should I do if I'm worried my baby is eating too little or too much?
Trust your instincts and talk to your pediatrician or health visitor. Signs to flag include poor or no weight gain, far fewer wet nappies than usual, refusing feeds, or seeming unsettled and uncomfortable. Don't restrict milk or change how formula is mixed to manage weight without medical advice. A quick check-in often brings big reassurance and a clear plan.
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