How Much Should a 2-Week-Old Eat?

At two weeks, most babies are back at or near birth weight and feeding is starting to find a pattern, though it rarely feels predictable. If you are searching how much should a 2 week old eat, the short answer is about 450–630 ml (15–21 oz) per day, or roughly 55–90 ml (1.9–3 oz) per feed. This guide shows how that number comes from your baby's weight using the 150 ml/kg/day starting point, with a ml and oz lookup table, a worked example, and what 2-week-old breastfeeding looks like.

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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 23, 2026

Primary sources

6 official references

Written by

Baby Milk Calculator editorial team

Reviewed against

Guidance from AAP and CDC

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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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2 Week Old Baby Feeding Amount Per Day

The American Academy of Pediatrics (AAP) and the CDC describe a typical intake of about 150 ml of milk per kilogram of body weight per day in the early weeks. A 2-week-old usually weighs between 3.0 and 4.2 kg (6.6–9.3 lbs), so the daily target is about 450–630 ml (15–21 oz).

This is a starting estimate, not a quota. Babies vary from day to day, and a healthy baby who takes a bit more or less while gaining weight steadily is usually doing fine. Wet diapers, alertness and growth at check-ups tell you more than any single feed.

2 Week Old Formula Amount: Worked Example

Worked example

A 2-week-old weighing 3.6 kg at 150 ml/kg/day: 3.6 × 150 = 540 ml daily. Across 8 feeds: 540 ÷ 8 ≈ 68 ml (2.3 oz) per feed. Across 7 feeds: 540 ÷ 7 ≈ 77 ml (2.6 oz) per feed.

To calculate your own baby's amount, multiply their weight in kilograms by 150, then divide by the number of feeds they usually take in 24 hours. The formula calculator does this instantly in ml or oz.

2-Week-Old Feeding Amount Lookup Table (ml and oz)

Find your baby's approximate weight, then use the column that matches how many feeds they take each day. The same figures apply to expressed breast milk.

Weight	Daily total	Per feed ×8	Per feed ×7
3.0 kg / 6.6 lbs	450 ml · ~15.2 oz	56 ml · ~1.9 oz	64 ml · ~2.2 oz
3.3 kg / 7.3 lbs	495 ml · ~16.7 oz	62 ml · ~2.1 oz	71 ml · ~2.4 oz
3.6 kg / 7.9 lbs	540 ml · ~18.3 oz	68 ml · ~2.3 oz	77 ml · ~2.6 oz
3.9 kg / 8.6 lbs	585 ml · ~19.8 oz	73 ml · ~2.5 oz	84 ml · ~2.8 oz
4.2 kg / 9.3 lbs	630 ml · ~21.3 oz	79 ml · ~2.7 oz	90 ml · ~3.0 oz

Between two rows? Multiply the exact weight by 150 and divide by your feed count. You can also use the Baby Milk Calculator.

2 Week Old Breastfeeding: How Often Should a Baby Feed?

Breastfed 2-week-olds typically feed 8–12 times in 24 hours. Feeds are often bunched together in the evening (cluster feeding), which is normal and does not by itself mean low supply. Formula-fed babies usually feed 7–8 times, about every 3 to 4 hours.

Because you cannot see how much a breastfed baby takes, rely on swallowing you can hear, a baby who relaxes during and after feeds, diaper counts and weight checks. In the early weeks, most babies should not be left to go much beyond about 4 hours between daytime feeds unless your pediatrician has advised otherwise.

Hunger and Fullness Cues in a 2-Week-Old

Responsive feeding means watching for early hunger cues (rooting, hands to mouth, turning the head) instead of the clock. Crying is a late cue and makes latching or taking a bottle harder. Slowing their suck, relaxed hands, or turning away are signs your baby is full.

Use paced bottle feeding so your baby sets the speed.
Do not push your baby to finish a bottle; offer a little more if they keep asking.
Sleepy babies who need waking: offer feeds at least every 3 to 4 hours until your pediatrician says otherwise.

Is My 2-Week-Old Getting Enough Milk?

Wet diapers:at least 5–6 a day.
Stools: regular, soft and yellowish by this age.
Weight: most babies regain birth weight by about 2 weeks and then gain steadily.
Alertness: awake and responsive between feeds, content for a while afterward.

Contact your pediatrician if diapers drop off, your baby is hard to wake for feeds, vomits repeatedly, or has not regained birth weight. This guide is general information, not individual medical advice.

The Bottom Line

A 2-week-old typically takes about 450–630 ml (15–21 oz) per day, or roughly 55–90 ml (1.9–3 oz) per feed across 7–8 feeds. Use the table as a starting point and let hunger and fullness cues, diapers and growth guide the fine-tuning. Next stage: the 3-week-old guide.

Primary sources

Official references for this page

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

01
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.
02
Amount and Schedule of Baby Formula Feedings
HealthyChildren.org / American Academy of Pediatrics
AAP guidance on formula intake by weight and feeding cadence.
03
How Much and How Often to Feed Infant Formula
CDC
CDC guidance on first days, first months, and 6-12 month formula feeding.
04
How Much and How Often to Breastfeed
CDC
CDC expectations for frequent newborn breastfeeding and normal changes over the first weeks and months.
05
Is Your Baby Hungry or Full? Responsive Feeding Explained
HealthyChildren.org / American Academy of Pediatrics
AAP explanation of infant hunger and fullness cues.
06
How to Tell if Your Breastfed Baby is Getting Enough Milk
HealthyChildren.org / American Academy of Pediatrics
AAP signs of adequate intake, including diapers, weight gain, and satiety.

Frequently Asked Questions

How much should a 2 week old eat?

Most 2-week-olds weigh roughly 3.0–4.2 kg (6.6–9.3 lbs). Using the 150 ml/kg/day starting point from the AAP and CDC, that is about 450–630 ml (15–21 oz) per day, or roughly 55–90 ml (1.9–3 oz) per feed across 7–8 feeds. Treat it as a starting estimate and follow your baby's hunger and fullness cues.

What is a normal 2 week old baby feeding amount?

A worked example: a 3.6 kg baby needs 3.6 × 150 = 540 ml per day, which is about 68 ml (2.3 oz) per feed across 8 feeds or 77 ml (2.6 oz) across 7 feeds. Some babies take a little less in the first days and more as they approach a growth spurt.

How much is a 2 week old formula amount in ml per feed?

Most formula-fed 2-week-olds take about 55–90 ml (1.9–3 oz) per feed, offered every 3–4 hours or when early hunger cues appear. Use the lookup table on this page with your baby's weight, or the formula calculator for an exact figure.

2 week old breastfeeding: how often should my baby feed?

Breastfed 2-week-olds typically feed 8–12 times in 24 hours, often more in clusters during the evening. Feeds can last 10–30 minutes. Because breastfed volume cannot be seen, count wet and dirty diapers and check weight gain with your pediatrician instead.

How do I know my 2-week-old is getting enough milk?

Reliable signs are at least 5–6 wet diapers a day, regular soft stools, being alert between feeds, settling after feeding, and regaining birth weight by about 2 weeks. If diapers drop, your baby is hard to wake for feeds, or weight gain stalls, contact your pediatrician.

Can I use the same amounts for expressed breast milk at 2 weeks?

Yes. The 150 ml/kg/day starting point is used for both formula and expressed breast milk at this age. Offer it with paced bottle feeding so your baby can signal fullness.

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