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If you have chosen to go the breastfeeding route, you may feel that storing breast milk can be challenging. Perhaps you’ve taken over your existing freezer, leaving no space for groceries. Yet, if you’re an overproducer or need to pump regularly you desperately need space. You also don’t want to waste your liquid gold that is vital for baby’s development and growth.
In this article we’re going to go over how to properly store your breast milk and the best freezer for breastmilk, at the time of publication that is.
Key Takeaways:
- Freezing breastmilk allows for mothers to spend more time away from their babies for work or fun.
- Following storage guideline is essential for breastmilk safety.
- The right breastmilk freezer depends on your particular needs.

Table of Contents
Image | Product | |||
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Best Budget Compact Upright Freezer ![]() | Best Budget Compact Upright Freezer | Whynter Mini Upright Freezer
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| View on Amazon |
Best Upright Freezer ![]() | Best Upright Freezer | Frigidaire Upright Freezer
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| View on Amazon |
Best Budget Chest Freezer ![]() | Best Budget Chest Freezer | Northair Chest Freezer
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| View on Amazon |
Best Chest Freezer ![]() | Best Chest Freezer | Koolatron Large Chest Freezer
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| View on Amazon |
Best Budget Portable Freezer ![]() | Best Budget Portable Freezer | Alpicool Portable Mini Freezer
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| View on Amazon |
Best Protable Freezer ![]() | Best Protable Freezer | Whynter Portable Deep Freezer Chest
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| View on Amazon |
What are the Benefits of Freezing Breast Milk?
Breast milk is known for its amazing properties and how it is specifically tailored for your child. While many women may not make enough milk to need a freezer or even want one, others may be building a freezer stash to go back to work, desires to be a breast milk donor, or feel like it is just the best choice for their family. Check out how to pump and create a milk stash, if this is you.
With all the many wonderful properties contained in breastmilk, it does need to be taken care of for disease control. If not immediately refrigerated or used, breast milk can go bad, losing its precious nutrients and can be unsafe to consume. Investing in a freezer will allow you to freeze milk as soon as you express it. This will lower milk waste, save you money in the long run, and give you peace of mind knowing your child’s food source is safe.
How Do You Properly Store Breast Milk?
The best practices for breastmilk storage per the CDC’s storage guidelines, fresh milk can remain out on a counter at room temperature for up to 4 hours if it isn’t too hot (for me in Arizona in the summer that likely wouldn’t work). Or it can be stored for later use in the back of the refrigerator for up to 4 days. If it is a deep freezer that can maintain a temperature of 0*F (-18*C), or colder, then breastmilk can be stored for up to 12 months, although 6 months may be better for quality purposes. Never refreeze milk again after it has been completely thawed, unless you plan to use leftover milk for something other than feeding (such as a milk bath to soothe skin conditions). If this is the case label it appropriately.
If you need a better visual here it is in a table format. PC:CDC
Please note, if you have a power outage, try to not open the freezer door. They will stay colder for longer and will usually be all right if it is a quick reset. If you are worried about your milk, check each bag. If there are still ice crystals present then your breastmilk is still OK and can be frozen solid again.
If you are using breastfeeding and want to track ovulation to prevent another pregnancy too soon, see our article all about it!
Quick Tips on Storing Breast Milk in a Freezer
These tips are taken from the Mayo Clinic and CDC guidelines.
- Only use containers that are designed for breastmilk: clean, capped food-grade glass container or hard plastic container that are not made with the chemical bisphenol A (BPA). You can also use special plastic breast milk storage bags and breast milk containers.
- Label breast milk bags or storage container with tape or directly on container with permanent marker with the date, amount of milk, and time you pumped
- Try storing milk in smaller amounts around 1-2 oz so that you can easily reheat without wasting
- Don’t overfill your container as breast milk expands as it freezes
- Store milk at the back of the freezer and fridge, if possible, to keep it cold and at a consistent temperature.
- Always use oldest milk first: first in=first out
- As a general rule, for every 25-30 six ounce milk storage bags, you’ll need 1-1.5 cubic feet of space in a freezer
- If freezing milk for long term storage in breastmilk storage bags, try to do an initial freeze flat, so you can more easily stack or stand the bag upright afterward
- Avoid opening the door of your freezer too often, to avoid temperature fluctuations and avoid ice build up
How to Choose the Best Freezer for Breastmilk?
There are many options on the freezer market, how do you know which one is best for you? Keep in mind that freezers come in about three options: Upright, chest, and portable. We’re going to describe each one and the pros and cons of each, to help you narrow down your search.
Upright
Upright freezers typically have a door and shelves on the inside. The biggest pros include: they occupy less floor space, have easy organization through shelves, and you can store breastmilk upright. Cons include: they are more expensive, have more temperature fluctuation because of the door, and are less energy efficient.
Chest
Chest freezers are more spacious and resemble big square chests, with a hinging lid. Pros include: they are energy efficient, more affordable, and spacious. The cons would be: they take up more floor space, they are harder to organize, and accessibility is more challenging (think putting your whole arm in to get something at the bottom).
Portable
Portable freezers are new and are similar to vacation coolers. The pros include: they are great for working Moms on the go, portable, lightweight, and they only need batteries or electricity. Cons include: they are pretty pricey for their size, small sizes, not very energy efficient.
Traveling? Read our article on traveling with frozen milk, here.
Here are a few other things to consider when it comes to freezers, so you can make the best decision for your family.
- What kind of space do you have? If you have limited space you may want to consider an upright freezer or portable freezer as they take up the least amount of floorspace.
- What kind of organization do you want? If you are wanting to be more organized and have things readily accessible, again, the upright freezer and portable freezers may be what you are looking for.
- Are you looking for energy saving? Many freezers will eat at your energy bills, so look into those with energy star ratings. If you are looking for energy saving, chest freezers generally are the way to go.
- Low Maintenance? Chest freezers and portable freezers are the best option as you can easily clean them or manually thaw them out. Some of the newer models of upright freezers have frost free systems, you just have to pay for them.
- Grow with your family? The chest freezer and upright freezers will be able to grow with your family the most, especially if you go up a size. If you don’t end up using the freezer for breast milk, you can use it for food. It’s a great investment to have.
- Other factors to consider are temperature control; portability; storage size; and garage vs. indoor freezers
Top 6 Freezers for Breastmilk
Below you’ll find the 6 freezers in varying budgets and best overall. Remember that freezers come in all shapes, sizes, and can include lots of bells and whistles and this by no means is a comprehensive list. It is important to answer the questions above to find what you are looking for and what will suit your family best, including your budget.
Keep in mind the price points during publication date, as they are subject to change.
Best Compact Budget Upright Freezer
Whynter Mini Small Upright Freezer
If you have chosen to go the breastfeeding route, you may feel that storing breast milk can be challenging. Perhaps you’ve taken over your existing freezer, leaving no space for groceries. Yet, if you’re an overproducer or need to pump regularly you desperately need space. You also don’t want to waste your liquid gold that is vital for baby’s development and growth.
In this article we’re going to go over how to properly store your breast milk and the best freezer for breastmilk, at the time of publication that is.
Best Overall Upright Freezer
Frigidaire Upright Freezer
This is the biggest and most expensive freezer on the list, but includes a frost-free cooling system, a power-on indicator light, a temperature alarm, leveling legs, a reversible door, and plenty of storage shelves. This size may only be needed if you produce a large amount of breast milk, building a freezer stash, and you also wish to fill the freezer with other food options for your family.
Product Details: Dimensions:67.75 x 27.75 x 29.13 inches Capacity: 15.5 Cubic Feet Shelves: 4 Adjustable wire shelves
Pros:
- Great for more than just breastmilk or long-term storage
- Grows with your family needs
- Easy to reach everything inside
Cons:
- Most won’t need to store this much milk
- More expensive option
Best Budget Friendly Chest Freezer
Northair Chest Freezer
This is a nice size chest freezer that gives you a great amount of space for your money. It can also fit more breast milk than the 1 cubic foot and perhaps grow with your family. It’s nice that it comes with a tray, but you may want to find more containers so you don’t have to dig for things at the bottom.
Product Details: Dimensions: 21.18 x 21.77 x 30.94 inches Capacity: 3.5 Cubic Feet Shelves: 2 Baskets; 1 built-in shelf
Pros:
- Comes in 3 different colors
- 2 removable baskets
- Lid holds itself open
- Quiet and energy efficient
Cons:
- Deep, so you may have to reach pretty far in to get to the bottom
Best Overall Chest Freezer
Koolatron Large Chest Freezer
This freezer is 7 cubic feet of space that can be used for sizable food options as well as breast milk. Because it is bigger, you will need more floor space overall, however it is still pretty compact and has a flat back design so you can push it right up against the wall. It has manual defrost mode, and easy access drain. This is a nice in-between freezer option for a growing family.
Product Details: Dimensions: 35.75 x 22 x 33 inches Capacity: 7.0 Cubic Feet Shelves: 1 Wire Basket
Pros:
- Lid holds itself open
- Strong magnetic lid to seal and lock in temperature
Cons:
- Will require more floor space
Best Value Portable Freezer
Alpicool Portable Mini Freezer
With some of the best reviews and the most bang for your buck on portable freezers, this one is a great option to consider and can be a multi-use item. If you are on the go and working a lot this will freeze and keep your milk cold until you can get home.
Product Details: Dimensions: 16.72 x 12.6 x 9.8 Inches Capacity: 10 Quarts or 9 Liters Shelves: None
Pros:
- Can be converted to a refrigerator so can be more versatile
- Great for traveling long distances in the car
Cons:
- Smaller in size so less storage.
Best Overall Portable Freezer
Whynter 45 Quart Portable Fridge/ Freezer
And finally, if you are really serious about a portable freezer, this 2.83 Cubic feet Whynter with easy handles, may be what you want. It has an auto defrost with two removable wire shelves. It also has a fast freeze mode that will chill to -8*F and an easy built in drain plug. However, it is still expensive for its overall size and for what it can do, it just depends on what works the best for your family needs.
Product Details: Dimensions:16.5″D x 23.5″W x 20.5″H Capacity: 2.83 Cubic Feet or 45 Quart Shelves: 2 Wire Storage Baskets
Pros:
- Converts between freezer and refrigerator
- Easy to transport
Cons:
- Can’t use it as a freezer and refrigerator at the same time.
- Price
Final Thoughts
Being able to comfortably store breast milk is essential if you are: a working Mom on the go, wishing to have a breast milk supply on hand, or even pumping regularly. Knowing what type of freezer and options are important to you will help you narrow down your search. Hopefully this article can help you make an informed decision on storing your breast milk to ensure your precious little one gets the best nutrition for their growth and development.

Niki Cowan has a background in Medicine and Public Health. She is a Certified Health Education Specialist as well as a Medical Assistant. She’s passionate about Women’s Health and empowering women in their journeys. She is married to her wonderful husband Kevin, and they have an active son. While trying to have another little one hasn’t worked out yet, she is pursuing her passions and hoping to gain further education and experience in the area she loves, while playing with her son. She’s an avid reader, Original Great British Baking Show watcher, and very amateur kickboxer.
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