Glass Jar Size Chart: Every Spec You Need

Finding accurate specs for small glass jars shouldn't require a treasure hunt. I've spent more time than I'd like cross-referencing seller listings that only mention "5ml" and nothing else. No dimensions, no lid type, no glass details. So we grabbed digital calipers and measured every single jar we carry at Kraft & Kitchen. Here's everything in one place.

This chart covers jars from 5ml up to 18oz, with exact dimensions, lid mechanisms, child-resistant options, and material specs. Bookmark this page - you'll come back to it!

What Sizes Do Small Glass Jars Come In?

Our catalog spans 14 distinct jar configurations across seven capacity sizes. The smallest is 5ml (about a sixth of a fluid ounce) and the largest is 18oz. Most crafters and small business owners land somewhere in the 5ml to 9ml range for detailed storage, or jump to 3oz-5oz for retail packaging.

Here's the full specifications table with measurements verified across multiple production batches. Last updated March 2026.

Jar	Capacity	Diameter	Height	Glass Type	Lid Type	Child Resistant	Food Safe	UV Resistant
5ml Screw Top	0.17 fl oz	1.1"	1.0"	Soda-lime	Screw top (metal)	No	Yes	No
5ml CR Jar	0.17 fl oz	1.1"	1.0"	Soda-lime	Push-turn CR	Yes (ASTM D3475)	Yes	No
5ml Round Bottom CR	0.17 fl oz	1.1"	1.0"	Soda-lime	Push-turn CR	Yes (ASTM D3475)	Yes	No
5ml UV Resistant CR	0.17 fl oz	1.1"	1.0"	UV-block glass	Push-turn CR	Yes (ASTM D3475)	Yes	Yes
6ml No-Neck	0.2 fl oz	1.25"	1.0"	Soda-lime	Silicone press-fit	No	Yes	No
7ml Screw Top	0.24 fl oz	1.25"	1.2"	Soda-lime	Screw top (metal)	No	Yes	No
7ml UV Resistant CR	0.24 fl oz	1.25"	1.2"	UV-block glass	Push-turn CR	Yes (ASTM D3475)	Yes	Yes
9ml CR Jar	0.3 fl oz	1.4"	1.3"	Soda-lime	Push-turn CR	Yes (ASTM D3475)	Yes	No
9ml Round Bottom CR	0.3 fl oz	1.4"	1.3"	Soda-lime	Push-turn CR	Yes (ASTM D3475)	Yes	No
3oz CR Jar	3 fl oz	2.2"	2.5"	Soda-lime	Push-turn CR	Yes (ASTM D3475)	Yes	No
3oz Honey Jar	3 fl oz	2.2"	2.5"	Soda-lime	Screw top + silicone jacket	No	Yes	No
5oz CR Jar	5 fl oz	2.5"	3.0"	Soda-lime	Push-turn CR	Yes (ASTM D3475)	Yes	No
5oz Silicone Jacket	5 fl oz	2.5"	3.0"	Soda-lime	Screw top + silicone jacket	No	Yes	No
18oz CR Jar (24-pack)	18 fl oz	3.5"	4.0"	Soda-lime	Push-turn CR	Yes (ASTM D3475)	Yes	No

How Do You Read the Specs Correctly?

Capacity is measured in fluid ounces for consistency. But here's the thing - if you're storing solid items like beads, diamond painting drills, or small hardware, the actual usable volume depends on the size and shape of what you're putting in. A jar rated at 5ml holds 5ml of liquid, but packing irregular shapes always leaves air gaps.

Soda-lime glass is the standard type used in food and beverage containers worldwide. It's clear, durable, and fully recyclable. The Glass Packaging Institute notes that glass can be recycled endlessly without losing quality or purity. UV-block glass contains additives that filter ultraviolet light, which matters if you're storing light-sensitive products.

ASTM D3475 is the American standard for child-resistant packaging. Any jar marked CR in our catalog has been tested and certified to meet this standard's requirements. The Consumer Product Safety Commission oversees enforcement of child-resistant packaging regulations in the US.

Which Jar Size Works Best for Crafting?

I get this question constantly, and the answer depends on your specific craft. For diamond painting drill storage, the 6ml no-neck jar is our most popular choice. The wide opening makes it easy to pour drills in and out, and the clear glass lets you color-match without opening the lid.

Bead crafters tend to prefer 5ml screw tops for seed beads (they're tiny and you don't need much space) and 9ml jars for larger pony beads or letter beads. And if you're doing resin work, the 5ml size is perfect for storing pigment powders, glitter, and mixing additives.

For anyone organizing a full craft room, I'd recommend buying a mix. A starter set of 5ml, 6ml, and 9ml jars in the glass jars by size collection covers about 90% of what most crafters need.

What About Food and Kitchen Storage?

Every jar in our catalog is food-safe. The 3oz honey jar with its silicone grip jacket is our top seller for kitchen use - people use them for spice blends, vanilla extract, infused oils, and small batch preserves. The silicone sleeve gives you a better grip when your hands are wet or oily.

The 18oz jar works for larger dry goods like rice, dried beans, loose tea, or granola. And because it's child-resistant, it doubles as a secure storage option for households with young kids.

Pro Tip: Glass doesn't absorb odors or flavors the way plastic does. If you've ever stored garlic in a plastic container and then tried to use it for something else, you know exactly what I mean. Glass jars solve that problem permanently.

Do You Need Child-Resistant or Standard Lids?

This comes down to two factors: regulatory requirements and personal safety preferences. If you're packaging products for retail sale in regulated categories, CR lids that meet ASTM D3475 are typically mandatory. But plenty of our customers choose CR jars for their homes, too - especially parents with curious toddlers.

Standard screw-top lids are faster to open, which matters if you're accessing the same jar dozens of times a day during a craft project. The 6ml no-neck jar with its silicone press-fit lid is the quickest of all - just pop it off and pour.

So which should you pick? If safety is even a slight concern, go CR. The push-turn mechanism adds maybe two seconds to each opening. That's a tiny trade-off for peace of mind!

How Do Glass Types Affect What You Store?

Most of our jars use standard soda-lime glass. It's been the industry standard for centuries and works perfectly for the vast majority of storage needs. But if you're storing anything light-sensitive - botanical extracts, certain pigments, UV-reactive resins - you'll want our UV-block glass options.

The 5ml UV Resistant CR and 7ml UV Resistant CR jars filter ultraviolet wavelengths that can degrade sensitive contents over time. Think of it like sunscreen for your products. They cost a bit more than standard glass, but they're worth it if UV exposure is a concern.

One thing worth mentioning: all our glass is lead-free and cadmium-free. The FDA's guidelines on food contact materials require this for anything marketed as food-safe, and we test every batch to confirm compliance.

That's every jar we carry, measured and documented. Whether you're organizing a craft room, stocking retail shelves, or just looking for a better spice storage solution, the right jar is somewhere in that table. And if you're still not sure which size fits your needs, our glass vs plastic storage comparison breaks down why glass wins for long-term use.