Cremation Urn FAQ: Size, Cost, Materials and Your Rights

A cremation urn is a container that holds a person's cremated remains, sometimes called ashes or cremains. Decide where the urn will go first, then pick a size and material to match. Standard adult urns hold about 200 cubic inches, and you are free to buy one anywhere or to use the plain container the ashes arrive in.

This page answers the questions families ask most. For deeper detail, follow the links to our guides on materials, prices and engraving.

Do you have to buy an urn at all?

No. The Funeral Consumers Alliance (FCA) says some funeral homes urge a decorative urn, but you may use the plain cardboard or plastic container the ashes come back in. It calls that container adequate for burial, shipping, storing or placing in a columbarium.

The Cremation Association of North America (CANA) says the crematory places the remains in a strong plastic bag, inside either an urn or a temporary container. You can keep the temporary container for weeks or months while you decide. A cemetery may still have its own container rules, so ask before you bury or inter.

What size urn do you need?

Adult cremated remains average four to six pounds in weight, says CANA. Urns are sized by volume, though, in cubic inches. Retailers use a simple rule: about one cubic inch of capacity for every pound of the person's body weight before cremation. A 170-pound person needs roughly 170 cubic inches, and a 200-pound person about 200.

Because the bag takes some room, retailers suggest rounding up by 10 to 20 cubic inches. Too much space causes no problem, but too little can mean the remains don't fit. If you already have the ashes, you can also measure the temporary container and multiply length by width by height.

Capacity figures are from one retailer's size guide, checked in September 2026. Sellers differ, so read the listing. A thick-walled stone or wood urn can look large outside and hold less inside. See our guides to urn sizes, companion urns for two and keepsake urns.

Can the funeral home refuse an urn you bought elsewhere?

The FTC's consumer guidance says a funeral provider cannot refuse to handle a casket or urn you bought online, at a local store or somewhere else, or charge you a fee to do it. It also says the provider can't require you to be present when it arrives.

The Funeral Rule's own text and the FTC's business guidance focus on caskets, and they mention urns only as an optional item a provider may list on its price list. So tell the funeral home early, ask where and when to deliver the urn, and ask whether staff will transfer the ashes. If you meet resistance, you can report it to the FTC. Our online vs funeral home urns guide covers this in more detail.

How much does an urn cost?

Prices vary widely because nothing regulates them. The FCA says decorative urns sold through funeral homes or cemeteries range from several hundred to several thousand dollars. Online catalogs often start far lower.

These are "from" prices for the cheapest item in each group, not typical prices. Shipping, engraving and returns change the total. Our urn prices guide explains what drives the cost, and the keepsake finder below compares styles by budget.

Which material suits where the urn will go?

Home display is the easiest, since almost any material works. Other places have limits.

• A columbarium niche: Niches vary in size. One retailer's guide says single niches typically measure about 9 to 12 inches on each side, so measure before you buy and ask about material rules.
• Burial: The FTC says no state law requires outer burial containers, but many cemeteries do. See urn vaults for burial and burial urn requirements.
• Scattering: A light scattering urn or tube opens more easily than a heavy display urn.
• Water: The EPA says containers used for burial of cremated remains at sea must not contain plastic, float or add to marine debris, and the remains must go at least three nautical miles from land. You must report to the EPA within 30 days.

See urn materials compared for the pros and cons of wood, metal, ceramic, stone and biodegradable options.

Can you fly with an urn or mail one?

On a plane, yes. The TSA allows cremated remains in carry-on and checked bags. It recommends a temporary or permanent container made of a lighter material such as wood or plastic. Out of respect, officers will not open a container, even if you ask, and one that gives an opaque X-ray image will not be allowed through. Airlines can set their own rules for checked bags.

By mail, the USPS accepts cremated remains domestically only through Priority Mail Express, in its Cremated Remains box, with a sealed, sift-proof inner container. Read flying with ashes and shipping cremated remains before you travel or send.

Can you share the ashes or put two people in one urn?

Yes. Families often split ashes between a main urn and keepsakes or cremation jewelry, and the FCA says remains can be divided among locations. Some faiths ask that remains stay together, so talk with family and your faith leader first. A companion urn is made for two people. Don't try to fit two people's remains into a standard adult urn. See dividing ashes among family.

What to do next

1. Decide where the urn will go, and get the size and material rules for that place in writing.
2. Work out the capacity you need, then round up a little.
3. Ask the funeral home or crematory about its urn policy, delivery and transfer.
4. Order early if you want engraving or a service date to meet, since custom work adds time.