How many ml should a newborn drink?
Less than most people expect — and the amount changes dramatically by the day. On day one a newborn’s stomach holds only about 5–7 ml (a teaspoon); by a month it’s closer to an egg’s worth. The most reliable guide is never a number on a chart — it’s your baby’s cues and your midwife or doctor.
A newborn stomach is astonishingly small
Tap through the first month and watch it grow. Sizes are approximate, everyday-object comparisons.
A general illustration of typical development — every baby varies, and it isn’t a feeding target.
Why so little, so often
That tiny stomach is the whole story. Because it can only hold a small amount and milk digests quickly, newborns naturally feed little and often — commonly 8 to 12 times in 24 hours in the early weeks. It’s also why the first few drops of colostrum are enough: the supply is matched to the size of the tummy receiving it.
Stretches of near-constant feeding in the first week or two, often in the evenings, are so common they have a name — cluster feeding — and they’re usually a normal part of a baby settling in and a mother’s supply building, rather than a sign anything’s wrong. The headline takeaway most professionals repeat: watch the baby, not the clock.
How to tell a baby’s getting enough
Since you can’t see millilitres going into a breastfed baby, the useful signs are the ones coming out and the baby’s own behaviour. Reassuring indicators that are widely used include:
Hunger cues like rooting, lip-smacking and bringing hands to the mouth — crying is a late cue, so responding earlier tends to make feeds calmer. Regular wet and dirty nappies — a steady stream of heavy wet nappies (commonly around six or more a day once feeding is established after the first few days) and regular bowel movements are a classic everyday reassurance. Steady weight gain at routine check-ups, and a baby who is generally alert when awake and settled after feeds.
None of these is a substitute for your routine appointments — they’re just the day-to-day signs that tend to put worried parents at ease between visits.
When to check in with a professional
Feeding questions are exactly what your midwife, health visitor, pediatrician or GP are there for — never hesitate to ask, even about something small. It’s worth getting in touch promptly if you notice things like noticeably fewer wet nappies than usual, a baby who seems very sleepy and hard to rouse for feeds, ongoing trouble latching or feeding, or any sign of dehydration. They can check a feed in person and reassure you or step in as needed.
One important exception to everything above: babies born early (premature) or cared for in a special-care or neonatal unit often have different needs and a specific, weight-based feeding plan from their care team. If that’s your situation, follow that plan rather than any general guide written for full-term babies.
Common questions
This page shares general, well-established information to help you understand the bigger picture — it isn’t medical advice or a feeding plan. Every baby is different, and for anything about your own baby’s feeding, weight or health, your midwife, health visitor or doctor is the right person to ask.
Sources
- American Academy of Pediatrics (AAP) — amount and schedule of infant feedings; hunger cues.
- La Leche League & WIC infant-feeding guides — newborn stomach size by day, frequency of feeds, signs of adequate intake.
- Pediatric and lactation educator references — “tummy size” illustrations and paced bottle-feeding.
Related
From a cherry to an egg in a single month — which is the real answer to why those first feeds are so small, and so frequent.