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Feeding·7 min read·Reviewed: Mar 5, 2026

How Much Should a Newborn Eat? Feeding Amounts by Age

Exact feeding amounts for newborns and babies by age. Breast milk and formula ounces, hunger cues, and when to worry.

P

ParAI Health Team

Reviewed against AAP, WHO & CDC guidelines

How Much Should a Newborn Eat? Feeding Amounts by Age
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Key Takeaways

  • Newborns eat 1–3 oz (30–90ml) per feeding, increasing to 6–8 oz (180–240ml) by 6 months
  • Breastfed babies feed 8–12 times per day in the first weeks
  • The best indicator is weight gain and wet diapers — not exact ounces
  • Growth spurts temporarily increase feeding frequency and are completely normal

"Am I feeding my baby enough?" is the most common question new parents ask. Here's exactly how much your baby needs at every age.

Feeding Amounts by Age

AgePer FeedingFeedings/DayTotal/Day
Day 10.5 oz (15ml)8–124–6 oz (120–180ml)
Day 2–30.5–1 oz (15–30ml)8–126–12 oz (180–360ml)
1–2 weeks1–2 oz (30–60ml)8–1212–24 oz (360–720ml)
2–4 weeks2–3 oz (60–90ml)8–1016–24 oz (480–720ml)
1–2 months3–4 oz (90–120ml)7–924–32 oz (720–960ml)
2–4 months4–5 oz (120–150ml)6–824–36 oz (720–1080ml)
4–6 months5–7 oz (150–210ml)5–728–36 oz (840–1080ml)
6–12 months6–8 oz (180–240ml)4–624–32 oz (720–960ml) + solids

These are guidelines, not rules

Every baby is different. Some take smaller, more frequent feedings. Others prefer larger, less frequent ones. Follow your baby's cues, not a strict schedule.

See also: Formula Feeding Guide: Types, Amounts by Age & How to Prepare and Newborn Sleep Schedule: How Much Should Your Baby Sleep?.

Breastfeeding: How to Know Baby Gets Enough

You can't measure breast milk in ounces, so look for these signs:

  • 6+ wet diapers per day after day 4
  • Steady weight gain — back to birth weight by 2 weeks, then gaining 5–7 oz (150–200g)/week
  • Audible swallowing during feeding
  • Soft, relaxed hands after feeding (clenched fists = still hungry)
  • Content between feedings — not constantly rooting

Formula Feeding: Exact Amounts

The general rule: 2.5 oz (75ml) of formula per pound (0.45kg) of body weight per day, divided into feedings.

Example: A 10-pound (4.5kg) baby needs about 25 oz (750ml) per day. At 6 feedings, that's about 4 oz (120ml) per bottle.

Don't force the bottle

If your baby turns away, pushes the bottle out, or falls asleep, they're done. Never force a baby to finish a bottle — this can lead to overfeeding.

Hunger and Fullness Cues

Early hunger cues (feed now)

  • Rooting — turning head, opening mouth
  • Sucking on hands or fingers
  • Lip smacking

Late hunger cues (baby is very hungry)

  • Fussing and squirming
  • Crying (this is a late sign — try to feed before this point)

Fullness cues (stop feeding)

  • Turning away from breast or bottle
  • Closing mouth
  • Relaxed hands and body
  • Falling asleep

Feeding During Growth Spurts

Growth spurts typically happen at:

  • 7–10 days
  • 2–3 weeks
  • 6 weeks
  • 3 months
  • 6 months

During a growth spurt, your baby may want to eat more frequently for 2–3 days. This is called "cluster feeding" and is completely normal. Your milk supply will adjust.

Common Feeding Concerns

Spit-up

Some spit-up is normal — most babies outgrow it by 12 months. Concern if: projectile vomiting, not gaining weight, or seems in pain.

Overfeeding

Signs: excessive spit-up, gassy/fussy after feeds, very rapid weight gain. More common with bottle feeding — pace the bottle and watch for fullness cues.

Not eating enough

Call your pediatrician if: fewer than 6 wet diapers/day, not back to birth weight by 2 weeks, or losing weight.

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This article is for informational purposes only and is not a substitute for professional medical advice. Always consult your pediatrician for specific questions about your child's health.