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What Size Urn Do I Need? Complete Ashes Capacity Guide ?
Choosing the right urn size is an important step in honouring your loved one. The correct urn ensures the ashes are stored respectfully and securely, whether for home display, burial, or sharing among family members.
Understanding Urn Capacity
Urn capacity is measured in cubic inches. As a general rule:
1 cubic inch of urn space is needed for every 1 pound (0.45 kg) of body weight before cremation.
For example:
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A person who weighed 160 lbs will require an urn with at least 160 cubic inches of capacity.
It’s always recommended to choose a slightly larger urn to allow comfortable placement of ashes.
Standard Urn Size Guide
| Urn Type | Capacity | Suitable For |
|---|---|---|
| Adult Urn | 180–220 cubic inches | Most adults |
| Keepsake Urn | 1–50 cubic inches | Sharing ashes, small memorials |
| Companion Urn | 350–440 cubic inches | Two people |
| Child Urn | 40–150 cubic inches | Children or infants |
| Pet Urn | Varies by pet weight | Pets of all sizes |
Keepsake Urns: How Much Do They Hold?
Keepsake urns are designed to hold a small portion of ashes, often used when ashes are shared among family members or kept as a personal remembrance. They typically hold 1–5 cubic inches, though larger keepsakes may hold more.
Do Ashes Volume Vary?
Yes. Ash volume can vary depending on:
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Bone density
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Height and body structure
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Cremation process
This is why selecting an urn slightly larger than the calculated size is always a safe choice.
What If I’m Planning Burial or Scattering?
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Burial urns may need to meet cemetery size requirements
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Scattering urns are designed for temporary holding and easy dispersal
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Water urns are biodegradable and sized appropriately for full ashes
Always check local regulations before final selection.
Helpful Tips Before You Choose
✔ Choose a larger size if unsure
✔ Consider future plans (burial, display, or sharing ashes)
✔ Companion urns are ideal for couples
✔ Keepsake urns are not intended for full ashes
✔ Consider future plans (burial, display, or sharing ashes)
✔ Companion urns are ideal for couples
✔ Keepsake urns are not intended for full ashes
Still Unsure Which Urn Size You Need?
Our team is here to help you choose the right urn with care and understanding. Please contact us for personalised guidance.
