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How much should your baby eat?
Ounces per feed, feeds per day, and daily totals — estimated from your baby's age (in weeks or months) and weight (lb or kg) using AAP guidance, for both formula and expressed breast milk.
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2–4 months · Formula
24–32 oz
710–946 ml
4–5 oz
118–148 ml
6–8
- Many babies drop a night feed in this stretch.
Sources and assumptions
These broad age-based estimates summarize general feeding information. They are not an individualized intake target or a reason to delay a feed. Hunger and fullness cues, growth, and advice from your baby’s clinician take precedence.
Prepared by the Milk & Minutes Editorial Team. This calculator has not been independently reviewed by a clinician. Editorial standards.
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Formula amounts by age
Typical formula amounts by age (AAP guidance). Breastfed babies drinking expressed milk average 19–30 oz per day from 1–6 months.
| Age | Per feed | Feeds per day |
|---|---|---|
| First 2 weeks | 1–2 oz (30–59 ml) | 8–12 |
| 2 weeks – 1 month | 2–3 oz (59–89 ml) | 8–10 |
| 1–2 months | 3–4 oz (89–118 ml) | 7–9 |
| 2–4 months | 4–5 oz (118–148 ml) | 6–8 |
| 4–6 months | 4–6 oz (118–177 ml) | 5–6 |
| 6–9 months | 6–8 oz (177–237 ml) | 4–5 |
| 9–12 months | 7–8 oz (207–237 ml) | 3–4 |
Common questions
How much formula should my baby drink per day?
A widely used rule of thumb from the AAP: about 2.5 ounces of formula per pound of body weight per day, capped around 32 ounces. A 10 lb baby lands near 25 oz per day, split across 6–8 feeds depending on age.
How many ounces of breast milk does a baby need?
Breastfed babies drinking expressed milk average 19–30 oz per day from about 1 to 6 months — and unlike formula, that total stays remarkably flat as they grow. Babies get more efficient, not hungrier by the ounce.
How much milk should I leave for daycare?
Plan on roughly 1 to 1.25 ounces of expressed milk for each hour you're apart. For a 9-hour daycare day, that's about 9–11 oz, usually split into 3 bottles.
How do I know if my baby is eating enough?
Watch output and growth, not just ounces: 6+ wet diapers a day after the first week, steady weight gain, and a generally content baby after feeds are the strongest signs. Your pediatrician's growth chart is the ultimate scoreboard.
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This tool provides general educational guidance based on published guidelines. It is not medical advice. Always follow the recommendations of your pediatrician, lactation consultant, or healthcare provider — especially for premature babies, low-weight babies, or babies with health conditions.