Breast Milk Stash Calculator
Fill in the values and the answer updates as you type.
How the Breast Milk Stash Calculator works
Daily shortfall = baby intake per day − milk pumped per day. The stash lasts = stash ÷ shortfall. If you pump as much as your baby drinks, the stash does not shrink. Babies drink about 24 to 32 oz a day between 1 and 6 months, then intake levels off as solid foods begin. Storage limits vary, so follow current safe storage guidelines for freezer time. Example: with Milk in your stash 120 oz, Baby intake per day 25 oz, and Milk pumped per day 15 oz, the result is Days the stash lasts = 12.0 days; Daily shortfall from the stash (oz) = 10; Stash left after 30 days (oz) = 0.
Inputs and results
The Breast Milk Stash Calculator takes 3 inputs and gives 4 results.
What you enter
- Milk in your stash (oz) — starts at 120.
- Baby intake per day (oz) — starts at 25.
- Milk pumped per day (oz) — starts at 15.
What you get
- Days the stash lasts
- Daily shortfall from the stash (oz)
- Stash left after 30 days (oz)
- Pumping needed to break even (oz per day)
Example: Breast Milk Stash Calculator with the starting values
With milk in your stash 120 oz, baby intake per day 25 oz and milk pumped per day 15 oz, the calculator returns:
| Days the stash lasts | 12.0 days |
|---|---|
| Daily shortfall from the stash (oz) | 10 |
| Stash left after 30 days (oz) | 0 |
| Pumping needed to break even (oz per day) | 25 |
Change any value above and the results update straight away.
Breast Milk Stash Calculator FAQ
How do I use the Breast Milk Stash Calculator?
Enter milk in your stash, baby intake per day and milk pumped per day in the fields, then read days the stash lasts, daily shortfall from the stash (oz), stash left after 30 days (oz) and pumping needed to break even (oz per day) in the result panel. The answer updates as you type, and you can press Calculate or Enter to refresh it. Use “Copy link” to share your exact numbers with someone else.
What does the Breast Milk Stash Calculator calculate?
How long a frozen milk stash lasts from pumping and baby intake. It returns days the stash lasts, daily shortfall from the stash (oz), stash left after 30 days (oz) and pumping needed to break even (oz per day) from the 3 values you provide.
What values does the Breast Milk Stash Calculator start with?
It opens with milk in your stash 120 oz, baby intake per day 25 oz and milk pumped per day 15 oz so you can see a working result straight away. Replace them with your own numbers, or press Reset to return to these starting values.
Is the Breast Milk Stash Calculator free and private?
Yes. It is free, needs no account, and runs in your browser, so nothing you type is sent to or stored on our servers. See the Privacy Policy for details.
Can I rely on the Breast Milk Stash Calculator for medical or health decisions?
Treat the result as a well-rounded estimate. Real situations often have details a general calculator cannot know, so confirm medical or health decisions with a qualified professional. See the Disclaimer for more.