Formula Feeding Estimate
Work out how much infant formula a baby needs per day and per feed.
About Formula Feeding Estimate
A common rule of thumb is about one hundred fifty milliliters per kilogram daily before six months, dropping to one hundred twenty after. Splitting the daily total across the number of feeds gives each bottle size. Bottle-fed babies can easily be over- or under-fed, so a weight-based daily target keeps portions appropriate and tracks appetite changes.
Formula
Formula Feeding Estimate
Total ml = weight in kg x 150 (under 6 months) or x 120 (6-12 months); per feed = total / feeds
- ml per kg
- Common guideline of milliliters per kilogram of body weight
Worked example
With the default values below, Formula Feeding Estimate returns Total Daily (ml) of 930. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Baby age (months)accepts 0–24
- 3
- Weight unitone of Kilograms, Pounds
- Kilograms
- Weightminimum 0
- 6.2
- Feedings per dayaccepts 1–12
- 6
Results
- Total Daily (ml)
- 930 ml
- Per Feeding (ml)
- 155 ml
- Total Daily (oz)
- 31.4 oz
Step by step
- 1Values used
- 2Formula Feeding Estimate
- 3Total Daily (ml)= 930 ml
- 4Per Feeding (ml)= 155 ml
- 5Total Daily (oz)= 31.4 oz
Assumptions and limits
- The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, tax or compounding frequency into account.
- Figures are rounded for display to 1 decimal place, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
- Guidelines only; follow your pediatrician's advice and the formula package instructions.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
Guidelines only; follow your pediatrician's advice and the formula package instructions.
Frequently Asked Questions
How is Formula Feeding Estimate calculated?
Total ml = weight in kg x 150 (under 6 months) or x 120 (6-12 months); per feed = total / feeds A common rule of thumb is about one hundred fifty milliliters per kilogram daily before six months, dropping to one hundred twenty after. Splitting the daily total across the number of feeds gives each bottle size.
Why does Formula Feeding Estimate matter?
Bottle-fed babies can easily be over- or under-fed, so a weight-based daily target keeps portions appropriate and tracks appetite changes.
What values do I need to enter?
This calculator takes 4 inputs: Baby age (months), Weight unit, Weight, Feedings per day. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.