How to use the breastfeeding intake calculator
Prepare the values for this calculation
Total measured expressed-breast-milk volumes from a feeding log without estimating how much an infant should consume. Use the formula below to check that it answers your question. Read the input units before transferring figures from a statement, measurement or dataset.
Enter and check each input
- Measured feed volumes (mL): use the same separators and value order as the example in the input table. Replace the example data with your own complete dataset.
The input table gives a complete example. Keep units and time periods consistent across related fields.
Calculate and resolve any input error
Choose Calculate after entering the values. Changes also update the answer after a short pause. If an error appears, follow its message, correct the field and calculate again. Reset restores the example values.
Interpret the answer
Check Measured total intake first. With the unchanged example inputs, it is 540 mL. Compare the additional metrics with the primary result; each has its own label and unit.
Compare and keep a useful result
The result diagram shows the inputs, method and output. A numeric chart is shown only when the calculation supports a meaningful numeric relationship.
Use Copy result or Download CSV to keep the answer. Share tool shares the page address without placing your input values in the URL. Recheck inputs and assumptions before using the result for a decision.
Breastfeeding Intake Calculator formula
Total measured intake = sum of entered feed volumes; mean feed volume = total ÷ number of feeds.
Inputs and units
| Input | Format / range | Example |
|---|---|---|
| Measured feed volumes (mL) | Text / numeric list | 90, 80, 95, 85, 100, 90 |
Worked example
Using the example inputs above, the measured total intake is 540 mL.
- Measured total intake
- 540 mL
- Feeds logged
- 6
- Mean measured feed
- 90 mL
- Minimum measured feed
- 80 mL
- Maximum measured feed
- 100 mL
Results and assumptions
This page totals measured expressed-milk volumes only. It does not estimate how much an infant should consume. Follow current feeding/storage guidance and professional advice for the infant.
Sources and method references
Fix an input or unexpected result
If your answer differs from the example, choose Reset and compare every field, including selected units and options. Check percentage versus decimal entry and whether values describe the same period. Round only the final displayed answer when reproducing the formula.
If a discrepancy remains, report the calculator issue with the page address, non-sensitive example inputs, actual result, expected result and a reference for your calculation.