Milk Stash Calculator
Find out how many days your freezer stash will last — and how much more you need to reach your goal.
Daily intake estimates are based on AAP (American Academy of Pediatrics) and CDC breastfeeding guidelines. Every baby is different — consult your pediatrician for personalized advice.
How Much Freezer Stash Do You Need?
Most lactation consultants recommend building a freezer stash of at least 2 weeks' worth of milk before returning to work. A 1-month stash gives you extra peace of mind.
The average baby drinks about 25 oz (750 mL) per day between 1–6 months. This means a 2-week stash is roughly 350 oz (10,500 mL), and a 1-month stash is about 750 oz (22,000 mL).
To build your milk stash efficiently, try pumping one extra session per day after your baby's morning feed — that's when supply is typically highest. Read our guide on how to build a breast milk freezer stash for more tips.
Use our Breast Milk Storage Calculator to check how long your stored milk stays fresh.
Your App Already Does This — Automatically
Our Pumping Tracker app tracks your freezer stash and shows you exactly how many days of supply you have left — updated automatically every time you log a session or use milk from your stash.
About This Freezer Stash Calculator
This free milk stash calculator helps you figure out how long your current breast milk freezer stash will last and how much more you need to reach your goal. Enter your total stash volume and your baby's average daily intake to get a clear picture.
A common question for pumping moms is "how much freezer stash do I need?" The answer depends on your situation. If you're building a stash before returning to work, most lactation consultants suggest having 3–5 days' worth of milk (roughly 75–150 oz for a baby who drinks 25–30 oz per day). If you're weaning, you'll want enough to cover the transition period.
Don't stress about building a massive stash. Many moms only manage 1–2 extra ounces per day after regular feedings — that's perfectly normal and adds up to 30–60 oz per month. The goal is to have a comfortable buffer, not a second freezer full of milk.
Remember to rotate your stash using the "first in, first out" method. Frozen breast milk is best used within 6 months (acceptable up to 12 months). Label every bag with the date and amount to stay organized.