Baby Feeding Amount Estimator
How much milk per feed and per day for your baby. Free, private and instant.
How to use the Baby Feeding Amount
- Pick metric (cm, kg) or imperial (ft, in, lb) units.
- Enter baby’s age (weeks).
- Enter baby’s weight.
- Choose feeding: Formula or Expressed breast milk (bottle).
- Press Calculate to get an instant result with a colour scale, chart and plain-English explanation.
About the Baby Feeding Amount
Estimate how much formula or expressed milk your baby needs each day from their age and weight. The usual guide is about 150 ml per kg per day, up to a maximum of around 960 ml, divided into the number of feeds typical for the age.
Also known as: baby formula calculator, how much milk should my baby drink, baby feeding chart, ounces per feeding calculator.
Worked example
- Baby’s age: 8 weeks
- Baby’s weight: 5.6 kg
- Feeding: Formula
Milk per day: 840 ml (About 120 ml × 7 feeds). A 5.6 kg baby aged 8 weeks typically needs about 840 ml a day, which is roughly 120 ml per feed over 6-8 feeds. Milk is the only food needed until about 6 months.
- Milk per day: 840 ml
- Per feed: 120 ml
- Feeds per day: 6-8
- Per kg of body weight: 150 ml
Formula and cut-offs
Daily milk = weight (kg) x 150 ml (about 100 ml/kg in the first week), up to 960 ml. Per feed = daily milk / feeds per day. Typical feeds per day: 8-12 (0-2 weeks), 7-9, 6-8, 5-6, 4-5 (6+ months, with solids).
Frequently asked questions
How much formula should a newborn drink?
About 30 to 60 ml per feed in the first week, rising to 90 to 120 ml by 1 month.
How much milk does a 3 month old need?
Around 120 to 180 ml per feed, 5 to 6 times a day, or about 750 to 900 ml a day.
Should I follow the chart strictly?
No. Follow your baby’s hunger and fullness cues, and check weight gain with your doctor.
How much milk does a baby aged 8 weeks and weighing 5.6 kg need per day?
Milk per day: 840 ml (About 120 ml × 7 feeds). A 5.6 kg baby aged 8 weeks typically needs about 840 ml a day, which is roughly 120 ml per feed over 6-8 feeds. Milk is the only food needed until about 6 months. Enter your own numbers above for a personal result.
Sources and references
- CDC - About breastfeeding
- American Academy of Pediatrics - HealthyChildren.org
- NHS - Pregnancy guide
Written and checked by the MediHub editorial team against the sources above. Read how we build and review our calculators.
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Last updated . This calculator is for education only and is not medical advice. See the medical disclaimer.