What Size Is a 32 Oz Mason Jar? | Quart-Size Dimensions Explained

A 32 oz mason jar is a 1-quart jar, holding about 32 fluid ounces of liquid at its nominal capacity.

Whether you’re meal-prepping dry goods or canning a batch of sauce, knowing the exact dimensions of a 32 oz mason jar matters more than you’d think. While all 32 oz jars share the same volume, the physical size and lid type vary depending on whether you grab a wide-mouth or regular-mouth version. Ball, the most common brand on US shelves, makes both styles, and they are not interchangeable.

Is a 32 Oz Mason Jar a Quart?

Yes. On major retail listings from Target and Ball’s own product pages, a 32 oz mason jar is sold and labeled as a 1-quart jar. The “32 oz” refers to 32 fluid ounces, which equals one US quart. This holds true across both the wide-mouth and regular-mouth versions.

One nuance: “32 oz” is a nominal capacity. Fillmore Container lists the wide-mouth quart jar with a 32.12 fl oz overflow capacity — that’s the total volume before liquid spills over the rim. The practical fill line sits slightly lower, especially when you account for headspace required for canning. For everyday storage, a full quart fits fine.

Ball Wide-Mouth 32 Oz Jar Dimensions

The Ball wide-mouth quart jar is the shorter, stouter option. Target’s listing gives the jar at 6.7 inches tall and 3.6 inches wide, while another reseller measures the jar body at 6.44 inches high with a 3.38-inch outside diameter. The discrepancy comes from whether the listing includes the lid and band or measures the bare jar body.

Regardless of retailer, the key spec to remember is the lid. Wide-mouth quarts use 86 mm lids (about 3.385 inches across). That’s the standard wide-mouth size across the Ball lineup, so lids and bands are interchangeable with other wide-mouth jars. The 86 mm opening makes this style easier to fill with whole fruits, scoop out thick contents, or clean by hand.

Ball Regular-Mouth 32 Oz Jar Dimensions

The regular-mouth quart is taller and narrower. Target lists it at 7.0 inches high and 3.5 inches wide with a 2.75-inch neck diameter. That narrower neck is the defining feature — it takes a 70 mm regular-mouth lid, not the 86 mm wide-mouth lid.

Ball’s product page specifies that the regular-mouth jar is BPA-free, dishwasher safe, and made in the USA. It also lists Freezer Safe: No, so don’t assume this variant can handle freezing temperatures without checking the exact SKU you own. The regular-mouth style pours more slowly and works well for liquids like sauces, mustard, and flavored vinegar, as Stine Home + Yard describes.

Wide Mouth vs. Regular Mouth: What’s Different?

The two 32 oz styles are not just cosmetic variants. They differ in three meaningful ways:

• Lid size: Wide-mouth takes 86 mm lids; regular-mouth takes 70 mm lids. They are not interchangeable.
• Height: The regular-mouth jar runs about half an inch taller (roughly 7.0 in vs. 6.44–6.7 in) to fit the same volume through a narrower opening.
• Freezer rating: Ball’s regular-mouth quart is explicitly marked Freezer Safe: No. Some wide-mouth variants carry different ratings, so verify before freezing either style.

When you’re ready to stock up, our tested roundup of the best 32 oz mason jars compares the top options side by side.

Which 32 Oz Jar Should You Buy?

Your choice comes down to what you’ll store. Wide-mouth jars are the better everyday pick for food storage — the larger opening fits measuring cups, spoons, and hands, and the squat shape shelves more efficiently in most cabinets. Regular-mouth jars pour cleaner for liquids and look classic on a pantry shelf, but the narrow neck makes cleaning and filling more fiddly.

Both styles hold exactly one quart at nominal capacity, and Ball’s manufacturing means either will last for years with normal use. The right answer is simply the one whose mouth size matches how you’ll fill it. For most households, wide-mouth wins on practicality; for pourers and traditionalists, regular-mouth holds its own.