Newborn Feeding Calculator
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A common guide from the American Academy of Pediatrics is about 2.5 ounces of formula per pound of body weight per day, up to about 32 ounces. An 8-pound baby needs roughly 20 oz a day, or 2.5 oz per feed at 8 feeds.
| Per day | 20 fl oz (591 mL) |
| Feeds per day | 8 |
| Per feed | 2.5 fl oz (74 mL) |
| Typical pattern for this age | about 8 to 12 feeds, every 2 to 3 hours |
| First days | newborns often take only 1 to 2 oz per feed at first, increasing over the first week |
Show steps
- Rule of thumb (AAP): about 2.5 oz of formula per pound of body weight per day, up to 32 oz.
- Daily amount = 2.5 × 8 lb = 20 oz.
- Per feed = daily ÷ number of feeds.
How much formula?
About 2.5 oz per pound per day, but babies regulate their own intake. Feed on cues: rooting, sucking on hands, fussing. Stop when baby turns away, slows down or falls asleep.
Typical schedule
| Age | Feeds per day | Per feed |
|---|---|---|
| First week | 8 to 12 | 1 to 2 oz, increasing |
| 1 month | about 8 | about 4 oz |
| 2 to 6 months | 6 to 8 | 4 to 6 oz |
| 6 months | 5 to 6 | 6 to 8 oz, plus solids |
Signs of enough milk
Steady weight gain, about 6 or more wet diapers a day after the first week and contentment after feeds are good signs. Ask your pediatrician if you are unsure.
Newborn Feeding Calculator quiz: 10 questions
Test yourself with 10 multiple-choice questions. Choose an answer and press Submit to see if you are right and why. Your score appears at the end.
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Frequently asked questions
How much should a newborn eat?
In the first days 1 to 2 oz per feed, rising to about 2 to 3 oz by the end of the first weeks.
How often should I feed?
Newborns usually every 2 to 3 hours, 8 to 12 times a day.
Can I overfeed?
Bottle-fed babies can take more than they need; watch fullness cues and avoid finishing every bottle by habit.
Does this apply to breast milk?
Breastfed babies need less per feed over time; see the breast milk calculator.
When should I call a doctor?
For poor feeding, fewer wet diapers, vomiting or slow weight gain.
Sources
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