Generally, one pound of a person's weight when alive will correspond to one cubic inch of cremated remains. For example, if a person weighed 150 pounds while alive, their loved ones can expect to receive 150 cubic inches of cremated remains, and should look for an urn with a volume of at least 150 cubic inches. A standard adult urn, which has a volume of at least 200 cubic inches, would be appropriate for this person. For a detailed estimation on the volume of ashes you may expect to receive after cremation, please visit our Urn Calculator. To read more about urn sizes, visit our detailed urn size guide.
Selecting the right urn size is important to ensure you have an urn that can accommodate your loved one's remains. It can be distressing to discover that an urn you picked is too small for your loved one. Fortunately, a standard-sized urn is properly sized to hold the full volume of ashes from most adults, which can take some of the guesswork out of choosing urn sizes. Use our urn size calculator to estimate the approximate volume you will need for your loved one's ashes, and when in doubt, always size up.
Larger people may require larger urns, because the volume of ashes after cremation is generally proportional to body size. A starting estimate is one cubic inch of ashes per one pound of body weight, so a larger individual would produce more ashes and require a larger urn. However, bone density is a large determining factor in the amount of ashes a person may have after cremation, so using our urn size calculator to estimate the volume of ashes using information such as age, height, weight, and gender can produce a more precise estimate.
A good starting estimate is to assume one pound of a person's weight while alive will produce one cubic inch of cremated remains. Therefore, if a person weighed 100 pounds, you can expect to receive about 100 cubic inches of ashes. A suitable urn for a 100lb person should be able to hold a bit over 100 cubic inches of ashes, leaving some room at the top to avoid the ashes overflowing or spilling over the lip of the urn. All standard adult urns will be appropriate, although you may also be able to use a medium-sized urn if it has a volume of over 100 cubic inches.
If you plan to keep all the ashes within one urn, choose an urn size that can hold the full volume of ashes you expect to receive. One pound of body weight will roughly correspond to one cubic inch of ashes, so you can use the weight of your loved one to estimate what size urn will be appropriate. Most adults will be able to use a standard-sized urn (also known as an adult urn), which has a volume in the range of 200 cubic inches. Make sure the urn's volume is slightly larger than your estimated volume of ashes, to avoid the urn overflowing during closure. If you are sharing or dividing ashes among family members, choose an urn that is smaller than a standard-sized urn, because you will not need to store the full volume of ashes. Discuss with your loved one how you plan to divide the ashes, including the number of people that will receive ashes and whether the ashes will be divided in equal portions.
As a rough estimate, someone who weighed 200 pounds while alive would have about 200 cubic inches of cremated remains. One pound of a person's weight generally equals one cubic inch of cremated remains. However, a more precise estimate can be found through our urn size calculator, which takes into account age, height, gender, and bone mass to calculate ash volume and suggest a recommended urn size.