Printable Baby Bottle Feeding Log: Offered, Left, Drank

We bottle-feed pumped milk and keep a log of the bottles. Over 18 days in October 2026, we offered an average of 865 ml a day. About 259 ml of that, roughly 30%, came back unfinished. Our baby actually drank closer to 606 ml a day. If we had only written down what went into the bottles, our log would have overstated what our baby drank by about 259 ml a day.

What goes on a bottle feeding log?

A bottle feeding log needs six things per feed: the time, the source, what you offered, what was left, what your baby drank and an optional note. The sheet on this page has exactly those six columns, plus optional spit-up marks in the Note box.

Table 1. The columns of the sheet

Each feed has optional spit-up marks in its Note box: light, medium or heavy. It is a note. It does not change offered, left or drank.

Amounts go in as ml and oz in the same cell, for example 120 ml / 4 fl oz.

How to log what your baby actually drank

1. Write the time of the feed and the source: pumped milk, formula or mixed.
2. Write what you put in the bottle as Offered. Example: 4 fl oz (about 120 ml).
3. When the feed ends, read what is still in the bottle and write it as Left. Example: 1 fl oz (about 30 ml). If you did not measure it, leave the cell blank and add a note.
4. Subtract: Offered minus Left is Drank. Example: 4 fl oz minus 1 fl oz is 3 fl oz (about 90 ml). In ml: 120 minus 30 is 90.
5. At the end of the day, add up each column. A blank Left cell is not counted as measured.

What named sources say about leftover breast milk is on our leftover breast milk guide.

Table 2. Example day total with three feeds

The ml values in this example are rounded to the nearest 5 ml per row, then added. Converting 11 fl oz directly gives about 325 ml, and 8 fl oz gives about 235 ml. The 5 ml gap is rounding. On your own sheet, write the number you measured.

How do you log a mixed bottle?

Write each part on one line, then the total offered. The line format is:

pumped milk 2 fl oz (about 60 ml) + formula 1 fl oz (about 30 ml) = 3 fl oz (about 90 ml) offered

Set the source column to “mixed”. Left and drank work as before: left is what remains in the bottle, drank is offered minus left.

This page covers only how to write a mixed bottle down. For questions about mixing, ask your pediatrician. What named sources say about one bottle is on our guide to breast milk and formula in one bottle.

How to log nursing you can’t measure

1. Add a nursing row for the session.
2. Write the minutes per side. Example: left side 10 min, right side 8 min.
3. Leave the “not measured” box checked. It is checked by default, so a nursing row never reads as a measured 0.
4. At the end of the day, write the total as measured ml plus the number of nursing sessions. Example: “about 175 ml (6 fl oz) measured + 2 nursing sessions not measured”.

A nursing session never counts as 0 ml, because no one measured it.

Which units should you use?

Use both. Write ml and oz in the same cell, for example 90 ml / 3 fl oz. The sheet uses the US fluid ounce, where 1 fl oz = 29.5735 ml.

NIST gives 1 US fluid ounce as 29.5735 mL (NIST Guide to the SI, Appendix B.8, page updated 2025-08-18, opened 2026-10-25).

Table 3. Quick conversion, US fluid ounces to ml

The rounded column is rounded to the nearest 5 ml, only in this table and in the examples on this page. The sheet itself does not round. Write the number you measured.

Bottle markings can be off. A 2016 survey of infant feeding bottles reported: “Nineteen bottles (22%) had at least one measured marking outside the tolerance of EN14350” (Gribble, Berry, Kerac and Challinor, Maternal & Child Nutrition; Volume marker inaccuracies: a cross-sectional survey of infant feeding bottles, opened 2026-10-25). If you can, measure with a measuring jug or syringe marked in ml and write that number instead of the line on the bottle. A scale reads grams, so note grams in the note column and keep the ml columns for volume.

What the survey measured, and how to check your own bottle, is in our guide on whether bottle measurement lines are accurate.

What is the difference between this sheet and an app?

The sheet is paper. It works without a screen or an account, and you can leave it on the changing table. An app can add up the day for you and keep every day in one place. The sheet makes you do the subtraction by hand.

Disclosure: Rememilk is a bottle milk log in development. It is not released yet. The sheet on this page is free and does not need the app.