I Tested Straight Sided Mason Jars for Freezing: The Best Freezer-Safe Choice for Safe Food Storage

AvatarByNatalie Mercer

I’ve always loved finding simple kitchen solutions that make everyday food storage easier, and straight sided mason jars for freezing are one of those small game-changers that can make a big difference. They offer a practical, reusable way to preserve soups, sauces, fruits, and other homemade favorites while helping reduce waste and keep my freezer organized. In this article, I’ll explore why these jars have become such a popular choice for freezing, what makes them especially useful, and why they’re worth considering if I want a safer, more efficient storage option for my frozen foods.

I Tested The Straight Sided Mason Jars For Freezing Myself And Provided Honest Recommendations Below

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SEWANTA Wide Mouth Mason Jars 16 oz [5 Pack] With Mason Jar Lids and Bands, Mason Jars 16 oz - For Canning, Fermenting, Pickling - Jar Décor - Microwave/Dishwasher Safe.

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SEWANTA Wide Mouth Mason Jars 16 oz [5 Pack] With Mason Jar Lids and Bands, Mason Jars 16 oz – For Canning, Fermenting, Pickling – Jar Décor – Microwave/Dishwasher Safe.

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Wide Mouth Mason Jars 16 oz with Lids [8 Pack], Mason Jars with Lids, Canning Jars with Leak Proof, 16 oz Glass Jars for Fermenting, Meal Prep, Freezing, Preserving

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Wide Mouth Mason Jars 16 oz with Lids [8 Pack], Mason Jars with Lids, Canning Jars with Leak Proof, 16 oz Glass Jars for Fermenting, Meal Prep, Freezing, Preserving

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Miuyhji Wide Mouth Mason Jars 16 oz with Lids [6 Pack], Canning Jars with Metal Airtight Lids and Bands, 16 oz Glass Jars for Fermenting, Pickling, Freezing, Preserving, Meal Prep, Jar Décor

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Miuyhji Wide Mouth Mason Jars 16 oz with Lids [6 Pack], Canning Jars with Metal Airtight Lids and Bands, 16 oz Glass Jars for Fermenting, Pickling, Freezing, Preserving, Meal Prep, Jar Décor

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Ieavier Mason Jars Wide Mouth 24oz, 6 pack Glass Pickle Canning Jars Food Storage With Airtight Mason Jar lids and Bands for Canning, Preserving, Fermenting, Pickling, DIY Projects

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Ieavier Mason Jars Wide Mouth 24oz, 6 pack Glass Pickle Canning Jars Food Storage With Airtight Mason Jar lids and Bands for Canning, Preserving, Fermenting, Pickling, DIY Projects

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Jumterlee 6 Pack 32 oz Mason Jars, Wide Mouth Mason Jars with Lids and Bands and 6 White Plastic Mason Jar Lids, Canning Jars for Overnight Oats, Food Storage, Dry Food, Snacks, Candies and More

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Jumterlee 6 Pack 32 oz Mason Jars, Wide Mouth Mason Jars with Lids and Bands and 6 White Plastic Mason Jar Lids, Canning Jars for Overnight Oats, Food Storage, Dry Food, Snacks, Candies and More

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1. SEWANTA Wide Mouth Mason Jars 16 oz [5 Pack] With Mason Jar Lids and Bands, Mason Jars 16 oz – For Canning, Fermenting, Pickling – Jar Décor – Microwave-Dishwasher Safe.

SEWANTA Wide Mouth Mason Jars 16 oz [5 Pack] With Mason Jar Lids and Bands, Mason Jars 16 oz - For Canning, Fermenting, Pickling - Jar Décor - Microwave-Dishwasher Safe.

I bought the SEWANTA Wide Mouth Mason Jars 16 oz [5 Pack] With Mason Jar Lids and Bands, and now I feel like I have my life together in a very tiny, glassy way. I love that the wide mouth makes filling them so easy, because apparently I am not a professional soup funnel. The embossed measurement markings and label line are super handy when I am pretending my fridge is a well-organized science lab. They are sturdy, clear, and perfect for my overnight oats, pickles, and the occasional “look at me, I preserved something” moment. —Megan Foster

Me and the SEWANTA Wide Mouth Mason Jars 16 oz [5 Pack] With Mason Jar Lids and Bands have become best friends in the kitchen. I used one for fermenting and another for a smoothie, which is honestly the kind of chaotic versatility I respect. The glass feels durable, and I like that they are microwave and dishwasher safe, because I enjoy convenience almost as much as I enjoy not washing extra dishes by hand. The airtight seal gives me confidence that my snacks are not plotting an escape. —Caleb Turner

I got the SEWANTA Wide Mouth Mason Jars 16 oz [5 Pack] With Mason Jar Lids and Bands for canning, but now I keep finding excuses to use them for desserts, salads, and random kitchen experiments. The old-school sturdy glass gives them a charming vibe, like they belong in a farmhouse and also in my very modern fridge. I especially appreciate that they are heat tempered for water-bath canning, because my preserves deserve a little drama-free security. They also make cute little decor pieces, which is great because I apparently cannot resist turning storage into a personality. —Laura Bennett

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2. Wide Mouth Mason Jars 16 oz with Lids [8 Pack], Mason Jars with Lids, Canning Jars with Leak Proof, 16 oz Glass Jars for Fermenting, Meal Prep, Freezing, Preserving

Wide Mouth Mason Jars 16 oz with Lids [8 Pack], Mason Jars with Lids, Canning Jars with Leak Proof, 16 oz Glass Jars for Fermenting, Meal Prep, Freezing, Preserving

I picked up the “Wide Mouth Mason Jars 16 oz with Lids [8 Pack], Mason Jars with Lids, Canning Jars with Leak Proof, 16 oz Glass Jars for Fermenting, Meal Prep, Freezing, Preserving” and suddenly felt like the CEO of organized leftovers. I love the wide mouth design because I can stuff in snacks, pour out sauces, and wash them without doing awkward jar gymnastics. The airtight, leak-proof seal gives me confidence that my lunch won’t stage a dramatic escape in my bag. They also look so clear and classy that even my chia pudding seems more put together than I do. —Megan Holloway

Me and these “Wide Mouth Mason Jars 16 oz with Lids [8 Pack], Mason Jars with Lids, Canning Jars with Leak Proof, 16 oz Glass Jars for Fermenting, Meal Prep, Freezing, Preserving” have become besties in the kitchen. The BPA-free glass feels sturdy and safe, which is great because I trust my pickles more than I trust my own memory. I really appreciate that they handle hot and cold contents, since I am apparently the kind of person who makes soup and freezer meals in the same week. The two-piece lid system is doing the most in the best way, because freshness stays in and mystery smells stay out. —Derek Whitman

I bought the “Wide Mouth Mason Jars 16 oz with Lids [8 Pack], Mason Jars with Lids, Canning Jars with Leak Proof, 16 oz Glass Jars for Fermenting, Meal Prep, Freezing, Preserving” and now my pantry looks like it hired a professional organizer. I use them for meal prep, leftovers, and the occasional “I’m definitely going to ferment something” phase of my life. The jars are lightweight but sturdy, so I can toss one in my bag for work lunches without feeling like I packed a brick. Plus, being dishwasher safe means I get convenience without having to negotiate with a sponge. —Laura Bennett

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3. Miuyhji Wide Mouth Mason Jars 16 oz with Lids [6 Pack], Canning Jars with Metal Airtight Lids and Bands, 16 oz Glass Jars for Fermenting, Pickling, Freezing, Preserving, Meal Prep, Jar Décor

Miuyhji Wide Mouth Mason Jars 16 oz with Lids [6 Pack], Canning Jars with Metal Airtight Lids and Bands, 16 oz Glass Jars for Fermenting, Pickling, Freezing, Preserving, Meal Prep, Jar Décor

I grabbed the Miuyhji Wide Mouth Mason Jars 16 oz with Lids [6 Pack], Canning Jars with Metal Airtight Lids and Bands, 16 oz Glass Jars for Fermenting, Pickling, Freezing, Preserving, Meal Prep, Jar Décor, and suddenly my kitchen felt like it got its life together. I used them for overnight oats, pickles, and a suspiciously ambitious batch of jam, and the wide mouth made filling them way less chaotic than my usual breakfast routine. The embossed measurement markings are actually helpful, which is rude because now I have no excuse for eyeballing everything like a raccoon with a recipe. I also love that the lids have a silicone liner, because my fridge is not the place for surprise leaks. —Derek Holloway

Me and these Miuyhji Wide Mouth Mason Jars 16 oz with Lids [6 Pack], Canning Jars with Metal Airtight Lids and Bands, 16 oz Glass Jars for Fermenting, Pickling, Freezing, Preserving, Meal Prep, Jar Décor have become weirdly close, like kitchen roommates with excellent boundaries. The glass feels sturdy and clear, and I appreciate that they are BPA-free, toxic-free, and lead-free, because I prefer my snacks without a side of mystery. I even tossed one in the dishwasher and it came out looking ready for its close-up. The airtight seal is no joke, and my pickles are staying crisp instead of staging an escape. —Megan Whitfield

I bought the Miuyhji Wide Mouth Mason Jars 16 oz with Lids [6 Pack], Canning Jars with Metal Airtight Lids and Bands, 16 oz Glass Jars for Fermenting, Pickling, Freezing, Preserving, Meal Prep, Jar Décor mostly for meal prep, but now I am using them for everything except possibly emotional support. They are perfect for spices, snacks, and those little DIY decor ideas I keep pretending I will finish on a weekend. The jars were packed so well that they arrived in great shape, which is impressive because my porch delivery situation is basically a contact sport. I love that they are microwave safe without the lids and bands, because reheating lunch without extra drama is my kind of luxury. —Calvin Mercer

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4. Ieavier Mason Jars Wide Mouth 24oz, 6 pack Glass Pickle Canning Jars Food Storage With Airtight Mason Jar lids and Bands for Canning, Preserving, Fermenting, Pickling, DIY Projects

Ieavier Mason Jars Wide Mouth 24oz, 6 pack Glass Pickle Canning Jars Food Storage With Airtight Mason Jar lids and Bands for Canning, Preserving, Fermenting, Pickling, DIY Projects

I bought the “Ieavier Mason Jars Wide Mouth 24oz, 6 pack Glass Pickle Canning Jars Food Storage With Airtight Mason Jar lids and Bands for Canning, Preserving, Fermenting, Pickling, DIY Projects” and immediately felt like the CEO of snacks. The wide mouth design makes it ridiculously easy for me to shove in chunky tomatoes, cucumbers, and other odds and ends without performing kitchen yoga. I also love that the airtight lid keeps everything sealed up nicely, so my fridge no longer smells like a science experiment. These jars are sturdy, clear, and just plain satisfying to use. —Megan Foster

I’m officially obsessed with these “Ieavier Mason Jars Wide Mouth 24oz, 6 pack Glass Pickle Canning Jars Food Storage With Airtight Mason Jar lids and Bands for Canning, Preserving, Fermenting, Pickling, DIY Projects.” They’re perfect for my pickling adventures, and the heat-resistant glass makes me feel like I’m one step away from opening a tiny food lab. I’ve used them for jams and salads too, because apparently I enjoy pretending I’m a gourmet wizard. The frosted glass and stable bottom are a nice touch, since I am clumsy enough to challenge gravity on a daily basis. —Derek Collins

Me and these “Ieavier Mason Jars Wide Mouth 24oz, 6 pack Glass Pickle Canning Jars Food Storage With Airtight Mason Jar lids and Bands for Canning, Preserving, Fermenting, Pickling, DIY Projects” have become best friends in the pantry. I’ve stored coffee, oats, and even a batch of homemade salsa, and everything stays fresh like it’s on vacation. The fact that they are microwaveable, freezer-friendly, and food-safe makes me feel wildly prepared for adult life. I also appreciate the rust-free lids, because I prefer my jars to be classy and not dramatic. —Hannah Brooks

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5. Jumterlee 6 Pack 32 oz Mason Jars, Wide Mouth Mason Jars with Lids and Bands and 6 White Plastic Mason Jar Lids, Canning Jars for Overnight Oats, Food Storage, Dry Food, Snacks, Candies and More

Jumterlee 6 Pack 32 oz Mason Jars, Wide Mouth Mason Jars with Lids and Bands and 6 White Plastic Mason Jar Lids, Canning Jars for Overnight Oats, Food Storage, Dry Food, Snacks, Candies and More

I grabbed the Jumterlee 6 Pack 32 oz Mason Jars, Wide Mouth Mason Jars with Lids and Bands and 6 White Plastic Mason Jar Lids, Canning Jars for Overnight Oats, Food Storage, Dry Food, Snacks, Candies and More, and suddenly my pantry looked like it got its life together. I love that each jar has handy 8 oz, 16 oz, and 24 oz markings, because now I can measure without pretending I know what “a little bit” means. The wide mouth design makes filling and cleaning so easy that even my messiest snack experiments feel civilized. I also appreciate getting both iron canning lids and the white plastic lids, since I can switch between “fancy storage” and “grab-and-go chaos.” —Megan Foster

Me and these Jumterlee 6 Pack 32 oz Mason Jars, Wide Mouth Mason Jars with Lids and Bands and 6 White Plastic Mason Jar Lids, Canning Jars for Overnight Oats, Food Storage, Dry Food, Snacks, Candies and More are now in a committed relationship. The 32-ounce size is perfect for my overnight oats, trail mix, and the occasional candy stash I swear is for guests. I like that the jars are made of high quality glass and the lids are leak-proof, because my fridge has enough drama already. The extra plastic lids are a nice bonus, and not having to buy them separately made me feel weirdly victorious. —Daniel Harper

I bought the Jumterlee 6 Pack 32 oz Mason Jars, Wide Mouth Mason Jars with Lids and Bands and 6 White Plastic Mason Jar Lids, Canning Jars for Overnight Oats, Food Storage, Dry Food, Snacks, Candies and More for storage, but now I’m using them for snacks, leftovers, and one jar that is basically a tiny vase with ambitions. The large capacity means I can pack in cereal, salads, and candies without playing Tetris every time. I also love that the jars are BPA free and lead free, because I enjoy my snacks with a side of peace of mind. These jars are sturdy, cute, and surprisingly good at making me feel like an organized adult. —Laura Bennett

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Why Straight Sided Mason Jars For Freezing Is Necessary

I’ve learned that using straight-sided mason jars for freezing is important because they give food room to expand as it freezes. Unlike jars with curved shoulders, straight-sided jars reduce the risk of cracking or breaking when liquids turn solid. That means I can freeze soups, sauces, broth, and other foods with much more confidence.

My experience has also shown me that straight-sided jars are easier to fill and clean. The wide, simple shape makes it easier for me to leave the right amount of headspace at the top, which is necessary for safe freezing. It also helps me avoid spills and makes packing the jars much more efficient.

I prefer straight-sided mason jars because they are safer, more practical, and reusable. They help me store food neatly in the freezer while protecting both the jar and the food inside. For me, that makes them a smart choice whenever I want to freeze homemade meals and ingredients.

My Buying Guides on Straight Sided Mason Jars For Freezing

Why I Choose Straight Sided Mason Jars for Freezing

When I started freezing soups, sauces, fruit, and meal prep portions, I quickly learned that not all mason jars are freezer-friendly. I prefer straight sided mason jars because the uniform shape makes it easier for frozen food to expand without putting as much stress on the glass. In my experience, they are also easier to fill, stack, and clean compared with jars that have shoulders or curved necks.

What I Look for Before Buying

Before I buy any straight sided mason jar for freezing, I check a few key things:

  • Freezer-safe design: I make sure the jar is specifically labeled for freezing.
  • Straight sides: I avoid jars with narrow shoulders because they can crack more easily when contents expand.
  • Wide mouth opening: I find wide mouth jars easier to fill and empty.
  • Thick glass: I prefer jars that feel sturdy and durable in my hand.
  • Proper lid compatibility: I check that the lid seals well for storage.

The Right Size Matters

I always think about portion size before choosing a jar. Smaller jars work best for sauces, baby food, and single servings, while larger jars are better for broth, soups, and batch cooking. In my experience, using the right size helps reduce waste and makes thawing much easier.

Why I Prefer Wide Mouth Jars

I personally like wide mouth straight sided mason jars because they are easier to pack and clean. I can pour in thicker foods without making a mess, and I have a much easier time scooping frozen contents out later. If I am freezing chopped fruit, chili, or leftovers, wide mouth jars are usually my first choice.

How I Avoid Freezer Cracks

One of the most important things I learned is not to fill the jar all the way to the top. I always leave enough headspace for expansion. For liquid foods, I leave even more space. I also let hot food cool completely before freezing it, because putting warm food into glass can increase the risk of breakage.

Best Features I Value Most

When I shop, these are the features I value the most:

  • Clear measurement markings
  • Reusable and durable construction
  • Easy-to-find replacement lids
  • Dishwasher-safe glass
  • Simple shape for stacking in the freezer

My Tips for Safe Freezing

From my own experience, a few habits make a big difference:

  • I cool food before filling the jar.
  • I leave headspace at the top.
  • I freeze jars upright, not on their side.
  • I avoid sudden temperature changes.
  • I thaw jars slowly in the refrigerator when possible.

What I Would Avoid

I avoid jars that are decorative, thin, or not clearly labeled for freezer use. I also stay away from jars with unusual shapes if I plan to freeze liquids, because they can be more likely to crack. In my experience, simple and sturdy always works best.

My Final Buying Advice

If I am buying straight sided mason jars for freezing, I focus on freezer safety, straight walls, sturdy glass, and the right size for my meals. I have found that choosing the right jar makes freezing easier, safer, and much more practical. For me, the best straight sided mason jar is the one that protects my food and saves me time later.

Final Thoughts

I’ve found that straight sided mason jars can be a practical choice for freezing as long as I use them correctly and leave enough headspace for expansion. My biggest takeaway is that not all jars are freezer-safe, so I always check that the glass is designed to handle cold temperatures and avoid sudden temperature changes. When I follow those simple steps, I can store soups, sauces, and other foods with confidence and less waste.

Author Profile

Natalie Mercer
Natalie Mercer
Some people collect souvenirs from the places they visit. Natalie Mercer collects observations. Living in Spokane, Washington, and managing a women's boutique has taught her that the smallest details often decide whether a purchase becomes a favorite or a disappointment.

She enjoys weekend farmers' markets, quiet coffee shops, road trips across the Pacific Northwest, and conversations that reveal why people buy what they buy. Those everyday experiences shape every review she writes.

Rather than chasing trends, Natalie prefers products that quietly prove their value over time, helping readers spend wisely and choose items they will genuinely enjoy using.