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Parenting & Baby · Free tool

Baby Bottle Feeding Amount Calculator

How many ounces per bottle and per day by age and weight. 2.5 oz/lb rule with 32 oz/day cap.

Updated April 2026

Feeding estimate

1–3 months

Total formula / day
30.0 oz
Bottles / day
6–7
Per bottle
4.3–5.0 oz

How the math works

  • Rule of thumb for the first 6 months: ~2.5 oz of formula per pound of body weight per day.
  • Divide the daily total by typical bottles per day for your baby’s age to get per-bottle volume.
  • Once solids start (around 6 months), formula total drops gradually as calories come from food.

Watch baby’s hunger cues — these are averages

Every baby has different appetite days. Rooting, hand-to-mouth, and fussing usually mean hungry. Turning away, slow sucking, or pushing the nipple out usually mean full. If your baby consistently needs much more or much less than these numbers, or isn’t gaining weight as expected, check in with your pediatrician.

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What it does

2.5 oz formula per pound of body weight per day, up to 32 oz max. With age-appropriate bottles-per-day and a hunger-cue reminder.

Runs entirely in your browser — no upload, no account, no watermark. For more tools in this category see the full tools index.

Embed this tool on your siteShow snippet

Paste this snippet into any page. Loads on-demand (lazy), no tracking scripts, and sized to most dashboards. Replace the height to fit your layout.

<iframe src="https://freetoolarena.com/embed/baby-bottle-feeding-amount" width="100%" height="720" frameborder="0" loading="lazy" title="Baby Bottle Feeding Amount Calculator" style="border:1px solid #e2e8f0;border-radius:12px;max-width:720px;"></iframe>
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How to use it

  1. Enter baby age + weight.
  2. Read oz per day.
  3. See bottles-per-day suggestion.

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