Free tools for sizing, sharing and budgeting a pet urn
Cremated remains weigh about 3-5% of body weight[1], and most urn questions start from that number. These tools turn it into capacities, shares and totals you can shop with.
- Results update as you type
- Nothing to install and no sign-up
- Every figure shows where it comes from
Where to start
Which tool answers your question?
Choosing an urn raises a handful of practical questions in a predictable order. How much ash will there be? How big should the urn be? Can we share it? What will everything cost? Each tool below answers one of those, and they're designed to be used together. They run in your browser, so nothing you type is stored or sent.
| Your question | Use this tool |
|---|---|
| How much ash will come back? | Ashes weight estimator |
| What capacity urn do I need? | Urn size calculator |
| How do we split ashes between people? | Ashes sharing planner |
| How much fits in a pendant or ring? | Jewelry ash capacity guide |
| Which paw print keepsake suits my pet? | Paw print keepsake chooser |
| What will the whole memorial cost? | Memorial budget planner |
Capacity
Urn size calculator: from weight to cubic inches
This is the tool most people need first. Enter your pet's healthy weight and it applies the one-cubic-inch-per-pound rule, adds a 10% margin so the lid closes easily, and suggests a standard size: small, medium, large or extra large. It also shows the volume in milliliters for sellers who list metric sizes.
Free tool
Urn size calculator
Find the urn volume you need from your pet's weight, plus keepsake and sharing options.
It's particularly useful at the extremes. A tiny pet can need far less than the smallest "pet urn" on a gift site, while a giant-breed dog can outgrow a "large" one. The full urn size calculator page explains the rule and its limits.
Expectations
Ashes weight estimator: how much to expect back
Many owners are surprised by how little, or how much, comes home. The estimator applies the published 3 to 5% range to your pet's weight and species, then compares the result with everyday objects. A 2.1 kg rabbit, for instance, returns roughly 74 g[2]; a large dog returns a few pounds.
Free tool
Ashes weight estimator
See roughly how much ash to expect back, by species and body weight.
Knowing the weight helps you judge whether a figurine or a narrow-necked vase will hold everything. Read how it's calculated on the ashes weight estimator page.
Sharing
Ashes sharing planner: a fair split between people
When a partner, grown-up children or a friend who helped with walks each want a share, this planner lays it out. Choose how many people and what each would like, from a small keepsake urn to a pendant or a scattering tube, and it shows what's left for the main urn.
Free tool
Ashes sharing planner
Split ashes fairly between family members, keepsake urns and jewelry.
Small pets need care here. A 12 lb cat returns only about 6.7 oz[3], which fills a keepsake or two quickly. The sharing planner page has a worked example.
Small keepsakes
Jewelry capacity guide and paw print chooser
Some keepsakes hold only a pinch. The jewelry ash capacity guide shows how much a pendant, ring or glass bead takes, and how many pieces one pet's ashes could fill if everyone in the family wanted one. It's a good reassurance that jewelry barely touches the amount in the main urn.
Free tool
Jewelry ash capacity guide
How much ash fits in pendants, rings and glass, and how many pieces one pet can fill.
Paw prints aren't made from ashes, but they're often displayed beside the urn, and some urns have a paw print panel built in. The paw print keepsake chooser matches a method, such as clay, ink or a cast, to your pet's size and fur. If your pet is still with you, it's worth doing while you can.
Free tool
Paw print keepsake chooser
Match a print method to your pet's size, fur and the keepsake you want to keep.
Budget
Memorial budget planner: the total before you commit
The urn is rarely the only cost. The planner lists cremation, euthanasia, pickup, the urn, jewelry, a memorial stone, a paw print, a farewell and a memorial tree, each with an editable low and high figure, and keeps a running total in dollars, pounds or Canadian or Australian dollars. For context, private dog cremation alone averages about $260[4] in the US, and one industry report says personalized urns range from about USD 50–1,000+[5].
Free tool
Memorial budget planner
Add up cremation, urn, keepsakes and a farewell so the total holds no surprises.
If the total is more than you'd hoped, the memorial budget planner page suggests where the money usually goes and where you can save without it feeling like a compromise.
Good to know
What the tools can't tell you
Every result is an estimate built on averages. Bone density, the cremation equipment used and how finely the remains are processed all change the real volume, which is why the size calculator leaves headroom. None of the tools can tell you how a particular urn looks in person or how well a seller packs a ceramic piece.
Two outside references help when you check a result. The NIST unit conversion tables settle any cubic-inch-to-milliliter question on a foreign listing, and a study of 100 commercial human cremations, which found about 3.5% in adults, shows how much individual results vary even with the same equipment.
12 cu in (cat); 70 cu in (dog)[6]
Once you have a number, the urn materials guide helps with the rest, or you can send us the result and we'll suggest urns that match it.
Reader polls
What would you choose?
Vote anonymously and see how other readers answered. The results are live counts from people who visit this site, so they show real opinions, not a scientific sample.
Will your pet's ashes stay together or be shared?
Tap an answer to vote and see how others answered. Anonymous.
What worries you most about ordering an urn online?
Tap an answer to vote and see how others answered. Anonymous.
Do you keep more than one memorial for the same pet?
Tap an answer to vote and see how others answered. Anonymous.
Free tools to help you plan
Urn size calculator
Find the urn volume you need from your pet's weight, plus keepsake and sharing options.
Ashes weight estimator
See roughly how much ash to expect back, by species and body weight.
Ashes sharing planner
Split ashes fairly between family members, keepsake urns and jewelry.
Memorial budget planner
Add up cremation, urn, keepsakes and a farewell so the total holds no surprises.
Jewelry ash capacity guide
How much ash fits in pendants, rings and glass, and how many pieces one pet can fill.
Paw print keepsake chooser
Match a print method to your pet's size, fur and the keepsake you want to keep.
Questions people ask
Are the urn size results accurate for every pet?
They're a reliable starting point, not a measurement. The rule works well for cats and dogs of normal body condition. For very lean or very heavy pets, use their healthy weight. For tiny pets such as hamsters and birds, you'll often get back less ash than the rule suggests, so a small keepsake is usually enough.
Do the tools save my information?
No. They run entirely in your browser and don't send what you type anywhere. If you close the page, the inputs are gone. If you'd like help with the results, you can copy them into our request form, which is the only place your details are sent.
Which tool should I use if the ashes are already home?
Weigh the sealed bag on a kitchen scale if you can. That's more accurate than any estimate. Then use the urn size calculator with your pet's healthy weight as a cross-check, and the sharing planner if anyone would like a portion.
Why does the size calculator add 10% extra?
Because ash doesn't pack neatly, the sealed bag takes up space, and it's far easier to close a lid with a little room to spare. The margin also covers the natural variation between pets of the same weight. An urn that's slightly too big is never a problem; one that's too small is.
Sources and our estimates
- [1] Embrace notes cremated remains typically weigh about 3-5% of the pet's original body weight. Embrace Pet Insurance - Bury or Cremate Your Dog? Costs, Pros & Cons, 2025.
- [2] A median-weight adult pet rabbit (2.1 kg) would be expected to return about 74 g (2.6 oz) of cremated remains. Our estimate: 2,100 g x 3.5%. How we calculate.
- [3] A 12 lb cat would be expected to return about 6.7 oz (0.42 lb) of cremated remains. Our estimate: 12 lb x 3.5% x 16 oz/lb. How we calculate.
- [4] CareCredit's 2025 cost study put the US national average for private dog cremation at $260 (range $206-$473). CareCredit (Synchrony) - How Much Does It Cost To Euthanize a Dog? (2025 ASQ360 procedural cost study), 2025.
- [5] Personalized pet urns range from about USD 50 to more than USD 1,000. Astute Analytica via GlobeNewswire — Global Pet Preservation Services Market to Hit USD 112.7 Million by 2032 (Apr 2, 2024), 2024.
- [6] Using the industry rule of thumb of 1 cubic inch of urn space per pound of body weight, a 12 lb cat needs an urn of about 12 cubic inches; a 70 lb dog needs about 70 cubic inches. Our estimate: urn cu in = body weight lb x 1 (industry rule of thumb, not a measured value). How we calculate.
Want us to check the numbers?
Tell us what you need and where you are. We'll reply by email with clear options and prices so you can decide in your own time.