What Cremation Urn Size Should I Buy?

A Guide to Choosing the Right Size Cremation Urn

When it comes to buying an urn, one question stands out: What cremation urn size do I need? It's not always a detail people expect to worry about. That is, until they're faced with a confusing list of options like "cubic inches," "companion size," or "keepsake." Don't worry. This guide breaks it all down in a compassionate, easy-to-understand way. With this information in mind, you'll be able to make a choice that feels right and respectful.

Why Cremation Urn Size Matters

The size of the urn determines how much of the cremated remains (or "ashes") it can hold. Choosing an urn that's too small can lead to complications, while one that's too large may feel unnecessary or cumbersome. Choosing the correct size ensures you preserve the remains safely and comfortably, and that the urn matches your memorial plans—whether you're displaying it, burying it, or sharing remains among family.

The Basic Formula for Cremation Urn Size

A common rule of thumb is that 1 pound of body weight before cremation = 1 cubic inch of ashes. For example, A person weighing 150 pounds requires an urn with a capacity of at least 150 cubic inches. Most standard adult urns hold about 200 cubic inches, which is suitable in most cases.

If you don't have an exact weight, an estimate is usually sufficient. But, it's wise to err on the side of slightly more capacity to avoid any issues.

While the 1:1 ratio (1 pound = 1 cubic inch) is a good baseline, it's often recommended to choose an urn with slightly more capacity—about 10-20 cubic inches extra. Selecting a somewhat larger size ensures there's enough room for the remains as well as additional items. This would include things such as mementos or keepsakes.

Types of Cremation Urns by Size

Here's a breakdown to help you match urn types with your needs:

URN TYPE CAPACITY IDEAL FOR

Crematoriums and funeral homes often provide temporary containers for ashes, which can give you a sense of the volume of remains. Ask the crematorium for the exact cubic inch measurement of the remains to confirm the correct urn size.

What If I'm Sharing Ashes?

In many families, ashes are divided among siblings or loved ones. In that case, choose multiple keepsake urns or mini-urns. You may also opt for a small display urn, with the remainder of the ashes placed in scatter tubes, jewelry, or biodegradable urns.

Other Things to Consider

Final Placement: Burial urns often need to fit into cemetery vaults. For display, a specific size niche will be used. Check the cemetery or columbarium's requirements before you buy.

Material Matters: Certain materials, such as stone or wood, are denser and may have thicker walls, which can impact internal capacity.

Travel: If transporting by plane, make sure your urn is TSA-approved and lightweight (some require X-ray visibility).

Cultural or Religious Traditions: Some cultures or religions have specific traditions regarding urn size or type. For example, your faith may prefer a larger urn to accommodate ceremonial items, while others may favor minimalistic urns.

Final Thoughts

Choosing the right urn size isn't just about math—it's about making a respectful decision that pays tribute to your loved one and supports your grieving process. When you understand how cremation urn sizing works, you can move forward with confidence.

Our memorial store offers a wide range of beautiful options in various sizes, shapes, and styles. If you have any questions or need additional information, email store@funeralwise.com.