What Size Urn for a Kitten?

Updated November 2026.

The short answer: size a kitten's urn by their weight, using the same guide as for any pet. A kitten weighing 1 kg (2.2 lb) needs about 2 cubic inches of space, roughly 36 ml, on the guide. A grown cat is much heavier, so for a full-grown cat read our cat urn size guide. If you are not sure which size fits, message us with the weight before you order.

What size urn for a kitten?

Losing a kitten is a particular kind of grief, and it often comes with the added difficulty of how small everything is. The good news is that the same simple guide applies as for any other pet, and the figures are small enough that you can see at a glance what space is needed. The thing to check carefully is the piece itself, because the size of the urn matters more here than the weight band.

How the guide works for a kitten

The common rule is about 1 cubic inch for each pound of weight. It is a guide, not a measured volume. A kitten's weight changes quickly, so use the weight they were when they died, or the most recent weight from the vet.

• A 0.5 kg (1.1 lb) kitten: about 1 cubic inch, roughly 18 ml
• A 1 kg (2.2 lb) kitten: about 2 cubic inches, roughly 36 ml
• A 2 kg (4.4 lb) kitten: about 4 cubic inches, roughly 72 ml

Those figures are small, so for a kitten check the measurements of the piece itself as well as the guide. If the crematorium gave you the volume of the ashes, use that figure instead of the guide.

Which weight should I use?

Use the weight your kitten was when they died, or the most recent figure from the vet. Kittens can put on weight in a matter of days, so a figure from last week may be a little behind. If you have no figure at all, a vet or the cremation provider can usually tell you what they recorded. If you can only estimate, take the larger figure.

Check the size on the product page

Each cat urn has its own size on its product page. Read the measurements there and compare them with the space you need. Do not use the outside measurements as the space inside: the outer size of an urn is larger than what it holds. Two of our cat pieces are:

• Minimalist modernist cat urn: a simple seated shape in cast stone, in a fixed design. There is no photo personalisation or selectable size on this product, so ask us to confirm it suits the volume of ashes before ordering.
• Personalised cat urn from photos: a seated portrait shaped from your photographs, with a black plug closing the opening underneath. Share the volume of ashes before ordering so we can confirm suitability.

If a product page does not show the size you need, message us with your kitten's weight, or the volume of the ashes if you have it, and we will say which piece suits. Both pieces are cast stone, finished by hand and made to order, with free tracked delivery in the UK and worldwide.

A portrait of a kitten

If you would like the urn to look like your kitten, the personalised cat urn is shaped from one clear photograph and up to five useful angles. Tell us what you want to capture in their face, ears or coat, and we prepare a digital preview before making. Kittens have a particular look: rounder faces, bigger ears, softer lines. A photograph taken at their eye level, in daylight, is the most useful one you can send. Older or slightly blurry photos still help. Send what you have.

The same choice, a different scale

A cat urn is chosen by the same question as a dog urn: how much space do the ashes need? Once you know that, choose the style you want, a simple shape or a portrait, and check it fits. Read compare cat urns to see the difference between a portrait and a simpler shape.

Tips

• If the crematorium gave you the volume of the ashes, use that figure instead of the guide.
• Between two sizes? Go up.
• Keep the weight you have. A vet's record is a good source if you did not weigh them at the end.
• Choose a steady indoor place, and support the urn underneath with both hands when you lift it.

Where to go next

See all our cat urns and the cat urns collection, or the cat urn size guide for full-grown cats. Our urn size calculator works for any weight in kilograms or pounds. For other ways to remember a cat, see cat memorial ideas. For care after a loss, read when your pet dies: the first few days, and pet loss support if you would like to talk to someone.

Questions people ask

What size urn for a kitten?

A kitten of 1 kg (2.2 lb) needs about 2 cubic inches of space, roughly 36 ml, on the common guide. Check the measurements on the product page, or message us with the weight.

How do I work out the space the ashes need?

The common guide is about 1 cubic inch for each pound of weight. It is a guide, not a measured volume. If the crematorium gave you the volume, use that.

Can I use the outside measurements to check the capacity?

No. The outside size of an urn is larger than the space inside. Share the volume of ashes before ordering so we can confirm suitability.

Which cat urns do you have?

The minimalist modernist cat urn, a fixed design, and the personalised cat urn, a seated portrait shaped from your photographs.

Can the urn look like my kitten?

Yes. The personalised cat urn is shaped from your photographs, and we prepare a digital preview before making.

What if I am not sure which one fits?

Message us with your kitten's weight, or the volume of the ashes, before you order and we will say which piece suits.

Do you deliver outside the UK?

Yes. Delivery is free and tracked, in the UK and worldwide.