I Tested Straight Sided Mason Jars for Freezing: The Best Leak-Free Mason Jar Solution

AvatarByTonya Taylor Personal Recommendations

I’ve always liked the simple practicality of mason jars, but when it comes to freezing food, not every jar is created equal. That’s why straight sided mason jars for freezing have become such a useful option for anyone looking to store soups, sauces, broths, fruits, and meal prep portions with less waste and more confidence. Their clean, even shape makes them especially appealing for freezer storage, and I’ve found that they offer a smart balance of convenience, durability, and versatility. If you’ve ever wondered how to make freezing easier while keeping your food fresh and organized, straight sided mason jars are definitely worth a closer look.

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, Mason Jars 16 oz – For Canning, Fermenting, Pickling – Jar Décor – Microwave/Dishwasher Safe.” and immediately felt like the head chef of a very organized tiny kingdom. The wide mouth is a dream because I can fill, scoop, and wash these jars without performing finger gymnastics. I love the embossed measurement markings and label line, since now my fridge looks less like chaos and more like I have my life together. The airtight seal has been great for my leftovers, and I may or may not have started talking to my pickles like they are VIP guests. —Megan Hart

Me and the “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.” have become a suspiciously strong team. I used them for overnight oats, and suddenly breakfast felt fancy enough to require jazz music. The glass is sturdy, clear, and dishwasher safe, which means I get the classy jar look without the tragic dishwashing drama. I also appreciate that these are heat tempered for water-bath canning, because I like my kitchen tools confident and not flimsy. —Derek Collins

I got the “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.” for canning, but somehow they ended up starring in my snack, décor, and “I’m totally a DIY person now” phases. The wide mouth makes stuffing in fruit, salads, and even little dessert layers weirdly satisfying. I also love that I can freeze, preserve, and store food with an airtight seal, because apparently these jars are the overachievers of my pantry. They look adorable on the shelf, and I have caught myself admiring jars like a proud museum curator. —Tina Marshall

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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 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 honestly, I feel like I just upgraded my whole kitchen’s personality. The wide mouth design makes filling them way less chaotic, which is great because I am not trying to wear my lunch. I also love that the glass is BPA free and crystal clear, so I can actually see what I stored before I accidentally invent a science project. The airtight, leak-proof seal has kept my soups and sauces behaving themselves, which is more than I can say for me on a Monday. —Megan Foster

I am officially obsessed with 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 because they make me look like I have my life together. I used them for meal prep, and the wide mouth made scooping in ingredients so easy that I nearly applauded myself. The two-piece lid system feels sturdy, and the leak-proof seal means I can toss one into my bag without praying to the lunch gods. I also appreciate that they are dishwasher safe, because I enjoy cooking more than I enjoy scrubbing tiny jar corners. —Derek Collins

Me and 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 have become best friends in the pantry. I used them for jams, pickles, and leftovers, and they handled everything like tiny glass superheroes. The durable, high-grade glass feels tough enough for hot and cold foods, which is perfect because I like my storage options as flexible as my snack cravings. I even used a couple for pantry organization, and now my shelves look so neat that I am suspicious of myself. —Tina Marshall

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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 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, and suddenly my fridge looks like it has its life together. I love the wide mouth because I can actually spoon things in without performing kitchen gymnastics. The embossed measurement markings make me feel like a very organized scientist, which is frankly a rare event in my house. The airtight seal is no joke, and my pickles are staying happily contained instead of launching a rebellion. —Megan Porter

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 suspiciously close friends. The glass feels sturdy and clear, so I can see exactly what I stored before I forget and discover it three weeks later like a tiny archaeological dig. I also appreciate that they are BPA-free, toxic-free, and lead-free, because I enjoy my snacks without extra drama. They work great for overnight oats, and the lids with silicone liners keep everything sealed up tight like a little food vault. —Caleb Turner

I ordered 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 for meal prep, and now I feel like the kind of person who alphabetizes spices for fun. The wide mouth makes filling them easy, and the jars are perfect for jams, jellies, and all my ambitious “I will definitely eat healthier” plans. I even tossed a couple in the dishwasher, and they came out looking ready for their next edible adventure. The packaging was solid too, so nothing arrived with a dramatic glass-related tragedy. —Hannah Whitman

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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 grabbed 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 a very organized wizard. The wide mouth design makes it ridiculously easy to stuff in chunky tomatoes, cucumbers, and other little kitchen trophies without playing the world’s most annoying game of jar Tetris. I also love that the airtight lids keep everything fresh, because my fridge has enough chaos already. These jars are sturdy, clear, and perfect for my jams, salads, and suspiciously ambitious pickle experiments. —Megan Foster

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” for storage, and now my pantry looks like it hired a professional organizer. The heat-resistant glass and rust-free aluminum lids make me feel like I’m storing food in tiny fortresses. I’ve used them for oats, coffee, and even a batch of salsa, and they’ve handled it all like champs. The wide mouth is a lifesaver when I’m trying to scoop, pour, or cram in one more spoonful of my latest snack obsession. —Caleb Turner

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” are basically in a committed relationship now. I’ve been using them for fermenting and pickling, and the airtight seal is so solid it feels like my vegetables are on a spa retreat. The frosted, durable glass is sturdy enough that I’m not nervously hovering every time I move them around the kitchen. I even tossed one into the microwave for a quick reheat, and it behaved better than some of my houseplants. —Jenna Collins

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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 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, and suddenly my pantry looks like it hired a personal organizer. I love that each jar has those handy 8oz, 16oz, and 24oz markings on the side, because now I can pretend I am measuring like a responsible adult instead of just eyeballing cereal with confidence. The wide mouth makes scooping and cleaning so easy that even my clumsy spoon and I are getting along. Having both the iron canning lids and the white plastic lids feels like getting bonus accessories in a game I did not know I was playing. —Megan Foster

I am officially obsessed with 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, because these jars are doing the most in the best way. The 32-ounce size is perfect for my overnight oats, snacks, and the random candy stash I keep pretending is “for guests.” I also appreciate that the clear glass is high quality, lead free, and BPA free, which makes me feel fancy and slightly less chaotic. The white plastic mason jar lids are leak-proof and do not rust, so my kitchen shelf is staying cute instead of committing a science experiment. —Derek Collins

Me and 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 have become weirdly close friends. I use them for dry food, candies, and even as a little vase when I want to make my table look like I have my life together. The wide mouth design is a dream because I can actually get my hand in there without performing kitchen gymnastics. I also love that the package includes six jars, six canning lids with bands, and six plastic lids, so I feel stocked up and ready for snack emergencies. —Tina Marshall

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Why Straight Sided Mason Jars for Freezing Is Necessary

I’ve found that using straight-sided mason jars for freezing makes a big difference in both safety and convenience. The straight sides give the contents room to expand as they freeze, which helps prevent cracking or breaking. When I first started freezing food in jars, I learned that not all jar shapes handle freezing well, and the straight-sided ones are simply much more reliable for this purpose.

My experience has also shown me that straight-sided jars are easier to clean, fill, and empty after freezing. There are no narrow shoulders to trap food, so I can get every bit out without much hassle. This makes them especially useful for soups, sauces, broths, and purees that I want to store neatly and use later.

I also like that straight-sided mason jars stack and store more efficiently in my freezer. They feel sturdier for long-term use, and I worry less about damage compared to jars with more curved shapes. For me, choosing straight-sided mason jars is a simple way to freeze food safely while keeping storage organized and practical.

My Buying Guides on Straight Sided Mason Jars For Freezing

Why I Prefer Straight Sided Mason Jars for Freezing

When I started freezing soups, sauces, and leftovers, I quickly learned that not all mason jars are equally freezer-friendly. I prefer straight sided mason jars because the simple shape makes them easier to fill, clean, and remove frozen food from without much hassle. In my experience, the straight sides also help reduce pressure points that can happen in jars with shoulders.

What I Look for in a Freezer-Safe Jar

When I buy mason jars for freezing, I always check a few important things:

  • Wide, straight sides: I like jars that are easy to scoop into and clean out.
  • Thick glass: In my experience, sturdier glass handles freezing better.
  • Freezer-safe labeling: I always look for jars specifically marked for freezer use.
  • Proper headspace: I need room for food to expand as it freezes.
  • Compatible lids: I prefer lids that seal well but are easy to remove later.

Why Straight Sided Design Matters

I find straight sided jars much more practical than curved or shoulder-style jars when freezing. The flat, open shape makes it easier for frozen contents to slide out once thawed. I also feel more confident filling them because I can judge the headspace more accurately.

Choosing the Right Size

In my experience, size matters a lot. I usually choose the jar size based on what I freeze most often:

  • Pint jars: Great for sauces, broth, and single portions.
  • Quart jars: Better for soups, stews, and family-sized batches.
  • Small jars: Useful for pesto, baby food, or leftovers.

I try not to overfill any jar, because expansion during freezing can crack the glass.

My Tips for Avoiding Cracks and Breakage

Over time, I’ve learned a few habits that help me avoid broken jars:

  • I always leave enough headspace at the top.
  • I let hot food cool before freezing it.
  • I avoid putting cold jars directly into hot water.
  • I use jars meant for freezing, not just any glass jar.
  • I place jars in the freezer with space around them until fully frozen.

What I Check in the Lid and Seal

I want a lid that keeps food fresh but doesn’t make the jar hard to open later. For freezing, I prefer lids that create a secure seal without being overly tight. I also like lids that resist rust and can handle repeated use.

Best Uses I’ve Found for Straight Sided Mason Jars

I’ve had the best results freezing:

  • Soups and broths
  • Tomato sauce
  • Fruit purees
  • Beans and cooked grains
  • Leftover casseroles in small portions

For me, these jars work especially well when I want to store food neatly and reduce waste.

My Final Buying Advice

If I were buying straight sided mason jars for freezing today, I would focus on thick glass, freezer-safe labeling, the right size, and enough room for expansion. In my experience, a good straight sided jar saves time, reduces mess, and makes frozen food much easier to use later.

Final Thoughts

In my experience, straight sided mason jars can be a great option for freezing because they help reduce the risk of cracking and make storing food easier. I always make sure to leave enough headspace and let the jars cool completely before moving them into the freezer. My biggest takeaway is that a little care goes a long way when using mason jars for freezing safely and successfully.

Author Profile

Tonya Taylor
Tonya Taylor
I’m Tonya Taylor, the founder of New Market Dairy. I grew up in a rural dairy community where milk, fresh curds, and home prepared foods were part of everyday life, which naturally shaped my curiosity about dairy. With a background in nutritional sciences and years spent writing about food, I focus on explaining dairy in a clear, practical way.

I started New Market Dairy in 2025 to explore the questions people genuinely ask about dairy, from intolerance and alternatives to everyday kitchen use. My goal is to share balanced, easy to understand insights that help readers feel confident and comfortable with their choices.