Formula Feeding Chart by Baby's Age and Weight

Want to create a formula feeding chart based on a baby's age and weight? Weight tells you roughly how much formula a baby needs in a day, and age tells you how many bottles to spread it across. This guide gives you both: a formula feeding chart by age and weight in ml and oz, and the simple steps to build a personal one using the 150 ml/kg/day starting point.

Editorial trust

How this guide is maintained

Written by the Baby Milk Calculator editorial team and reviewed against primary public-health guidance. This page is for general education, not individualized diagnosis or treatment.

Last content update

October 18, 2026

Primary sources

6 official references

Written by

Baby Milk Calculator editorial team

Reviewed against

Guidance from AAP and CDC

Good for

General reference and planning

Sources inform this guide. Citing an organization does not mean it authored, reviewed, or endorsed this page. See our editorial policy for how we use references and handle corrections.

SourcesHealthyChildren.org / American Academy of PediatricsCDC

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How Much Formula by Weight? Lookup Chart

Daily totals are weight in kg × 150 ml, the figure derived from AAP and CDC guidance of about 2.5 oz per pound per day. From about 6.5 kg the chart shows the practical ceiling of around 32 oz (950 ml) instead of the raw multiplication, because most formula-fed babies level off there. Per-feed amounts divide the daily total by a typical number of feeds.

Weight	In lb/oz	Daily total	Feeds/day	Per feed
3.0 kg	6 lb 10 oz	450 ml · ~15.2 oz	8	56 ml · ~1.9 oz
3.5 kg	7 lb 11 oz	525 ml · ~17.8 oz	8	66 ml · ~2.2 oz
4.0 kg	8 lb 13 oz	600 ml · ~20.3 oz	8	75 ml · ~2.5 oz
4.5 kg	9 lb 15 oz	675 ml · ~22.8 oz	7	96 ml · ~3.3 oz
5.0 kg	11 lb 0 oz	750 ml · ~25.4 oz	7	107 ml · ~3.6 oz
5.5 kg	12 lb 2 oz	825 ml · ~27.9 oz	7	118 ml · ~4.0 oz
6.0 kg	13 lb 4 oz	900 ml · ~30.4 oz	6-7	129-150 ml · ~4.4-5.1 oz
6.5 kg	14 lb 5 oz	~950 ml · ~32 oz	6	158 ml · ~5.3 oz
7.0 kg	15 lb 7 oz	~950 ml · ~32 oz	5-6	158-190 ml · ~5.3-6.4 oz
8.0 kg	17 lb 10 oz	~950 ml · ~32 oz	5	190 ml · ~6.4 oz

Want an exact figure for your baby? Use the formula calculator or the baby milk intake by weight calculator.

Formula Feeding Chart by Age: Feeds and Bottle Sizes

Age sets the rhythm. Younger babies take small bottles often; older babies take bigger bottles less often. The ranges below overlap on purpose, since healthy babies of the same age vary in weight and appetite.

Age	Typical weight	Feeds/day	Per feed
Newborn (first week)	3.0-3.5 kg	8-12	15-60 ml · 0.5-2 oz
1 month	3.5-4.5 kg	7-8	60-90 ml · 2-3 oz
2 months	4.5-5.5 kg	6-7	90-120 ml · 3-4 oz
3 months	5.5-6.5 kg	6-7	120-150 ml · 4-5 oz
4 months	6.0-7.0 kg	5-6	150-180 ml · 5-6 oz
5-6 months	6.5-8.0 kg	4-5	180-240 ml · 6-8 oz

For a month-by-month view, see the 0–6 month formula chart or the week-by-week chart to 3 months.

How to Create a Formula Feeding Chart for Your Baby

Weigh your baby (or use the latest weight from a check-up) and convert pounds to kg by dividing by 2.2.
Multiply by 150 for a daily total in ml. In oz, multiply pounds by 2.5.
Divide by the feeds your baby usually takes, using the age table above as a guide.
Write it down as a row: date, weight, daily total, per-feed amount.
Update at each weigh-in.A baby gains quickly in the first months, so last month's row goes out of date fast.

Worked 150 ml/kg/day Example

Worked example

A baby weighing 4.8 kg (about 10 lb 9 oz): 4.8 × 150 = 720 ml per day, about 24 oz. At 7 feeds that is 720 ÷ 7 ≈ 103 ml (3.5 oz) per bottle. At 6 feeds it is 120 ml (4 oz). The 150 ml/kg/day explainer covers the maths in more depth.

Day-one and week-one babies are the exception: their stomachs are tiny, so first feeds are measured in a few ml rather than the full formula above.

Age or Weight: Which Should You Follow?

Neither is a rule. Weight is the better personal starting point, because a 3 kg baby and a 4.5 kg baby of the same age need noticeably different amounts. Age is the better guide to how many bottles to expect and how long babies can go between them. Premature babies, babies with feeding difficulties and babies below their growth curve should follow the plan their pediatrician gives them, not a general chart.

Hunger cues (rooting, hands to mouth, fussing) and fullness cues (slowing down, turning away, relaxed hands) always take priority. Paced bottle feeding makes it easier for a baby to stop when full. See the signs your baby is eating enough guide for what to watch for.

When the Chart and Your Baby Disagree

Growth spurts can make a baby want extra for a few days. Offer a little more if they show cues.
Sleepy or unwell days can mean smaller intake. Offer feeds more often rather than larger ones.
Always prepare formula exactly as the label says. Never add extra powder or water to change volumes.

Contact your pediatrician if wet diapers drop below about 5–6 a day, your baby is hard to wake for feeds, or weight gain stalls. This chart is general information, not individual medical advice.

Primary sources

Official references for this page

These links are the main public-health and pediatric references used to maintain this guide.

01
Amount and Schedule of Baby Formula Feedings
HealthyChildren.org / American Academy of Pediatrics
AAP guidance on formula intake by weight and feeding cadence.
02
How Much and How Often to Feed Infant Formula
CDC
CDC guidance on first days, first months, and 6-12 month formula feeding.
03
How Often and How Much Should Your Baby Eat?
HealthyChildren.org / American Academy of Pediatrics
AAP overview of breast milk and formula feeding frequency and volumes.
04
Choosing an Infant Formula
CDC
CDC guidance on selecting iron-fortified infant formula and avoiding homemade formula.
05
Infant Formula Preparation and Storage
CDC
CDC safety guidance for preparing and storing infant formula.
06
Is Your Baby Hungry or Full? Responsive Feeding Explained
HealthyChildren.org / American Academy of Pediatrics
AAP explanation of infant hunger and fullness cues.

Frequently Asked Questions

How much formula by weight does a baby need?

The AAP and CDC starting point is about 150 ml of formula per kg of body weight per day (2.5 oz per pound). A 4 kg baby works out to roughly 600 ml (20 oz) a day, and a 6 kg baby to about 900 ml (30 oz). Above roughly 6.5 kg, daily intake usually levels off near 950 ml (32 oz), so treat the result as an estimate and follow your baby's cues.

How do I create a formula feeding chart based on a baby's age and weight?

Multiply your baby's weight in kg by 150 to get a daily total in ml, then divide by the number of feeds a day for their age (about 8 in the first month, 6-7 at 2-3 months, 4-6 at 4-6 months). Write the results in a small table with age, weight, daily total and per-feed amount, and update it at each weigh-in.

What is a formula feeding chart by age and weight in oz?

Divide the ml figure by 29.57, or simply use 2.5 oz per pound of body weight per day. For example, 5 kg (11 lb) is about 750 ml, which is roughly 25 oz a day, or about 3.6 oz across 7 feeds.

Should I use age or weight to decide how much formula to give?

Weight is the more personal starting point, because two babies of the same age can differ by a kilogram or more. Age tells you how many feeds to expect and how big each bottle tends to be. Use both together, then let hunger and fullness cues have the final say.

Why does my baby drink more or less than the chart says?

Charts are averages. Growth spurts, sleepiness, illness and how fast the nipple flows all change what a baby takes in one day. If your baby is gaining weight, producing plenty of wet diapers and seems content, a variation from the chart is usually normal. Mention persistent differences at the next check-up.

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