What Size Urn for a 30 kg Dog?
Updated November 2026.
The short answer: a dog who weighed 30 kg (66 lb) fits our Medium–Large size, which is for pets up to 30 kg. As a stacked canopic jar, the Medium–Large urn measures approx. 140 mm wide, 180 mm deep and 270 mm tall. If your dog weighed a little more than 30 kg, choose Extra Large, for pets up to 40 kg.
What size urn for a 30 kg dog?
A dog of 30 kg sits exactly on the upper edge of our Medium–Large band, and that is the one place where it pays to stop and think. If 30 kg was your dog's usual, healthy weight, Medium–Large is the right size. If they were closer to 31 or 32 kg, or you are not sure to the kilogram, go up to Extra Large. A little spare room is always kinder than too little.
Dogs around 30 kg are a wonderfully mixed group: a large Border Collie or a heavy Springer Spaniel, a Boxer, a Labrador on the small side, many sturdy crossbreeds and rescues. The weight, not the breed, decides the size.
How much space do ashes need for a 30 kg dog?
A common guide is about 1 cubic inch of space for each pound your dog weighed. Thirty kilograms is 66 lb, so the guide gives about 66 cubic inches, roughly 1.1 litres. This is a guide, not a measured volume. It keeps the choice simple and leaves room to spare. If the crematorium told you the volume of the ashes, use that figure instead and tell us before you order.
| Our size | Pet's usual weight | Rough ashes volume (guide) | Canopic jar urn, approx. outer size (W x D x H) |
|---|---|---|---|
| Small–Medium | up to 15 kg (33 lb) | up to about 33 cubic inches, roughly 540 ml | 120 x 154 x 231 mm |
| Medium–Large | up to 30 kg (66 lb) | about 66 cubic inches, roughly 1.1 litres | 140 x 180 x 270 mm |
| Extra Large | up to 40 kg (88 lb) | about 88 cubic inches, roughly 1.4 litres | 160 x 206 x 309 mm |
Between two sizes? Go up. Please also don't read the outside measurements as the space inside: the outer size of any urn is larger than what it holds. Tell us the volume you need to hold and we will confirm the size before you order.
Which weight should you use?
Use your dog's usual, healthy weight. Many people do not know an exact weight at the end of a dog's life, and dogs often lose weight when they are unwell. A recent weight from the vet's records is a good guide. If they were much heavier or lighter earlier in life, think about what they weighed for most of their adult years.
- You have a vet weight from the last year: use it.
- You only have a rough idea: pick the higher figure and go up a size if it lands near 30 kg.
- The crematorium gave you a volume: use that, and message us with it.
Our urn size calculator takes the weight in kilograms or pounds and shows the size. It uses the same guide as this page.
Styles in the Medium–Large size
The Medium–Large size is available across our dog and pet urns, so you can choose the style you love and then match the size. Every one is cast stone, finished by hand and made to order, with free tracked delivery in the UK and worldwide.
- Custom dog portrait urn: a seated portrait shaped from one to five of your photographs, in chalk off-white. A black plug closes the opening underneath.
- Collar urn: made to hold their own collar beside the portrait. Tell us the fastened circumference and the strap width when you order.
- Wrapped pet urn: your dog's face held by curved, overlapping forms.
- Personalised canopic jar urn: black with antique-gold details, a portrait lid and your dog's name on the front panel. The lid rests on the jar without a seal.
For every portrait style you send one to five clear photographs and we share a digital proof before anything is made, so you see your dog's likeness first. See the whole range in pet urns for ashes or our dog urns guide.
Keep their things close
For many people at this stage the practical question is where the urn will live. The portrait, collar and wrapped urns are for indoors, on a steady shelf, mantel or sideboard. The canopic jar can sit indoors or in a sheltered outdoor spot. Support any urn underneath with both hands when you lift it. If you would like help choosing between styles, read how to choose a pet urn or compare pet urns.
Related size guides
For a dog of a different size, see our large dog urn size guide, our small dog urn size guide or the Labrador urn size guide. Border Collie and Springer Spaniel owners will find their breeds' weights in the Border Collie and Springer Spaniel guides.
Questions people ask
What size urn do I need for a 30 kg dog?
Medium–Large, which is for pets up to 30 kg (66 lb). If your dog was a little over 30 kg, choose Extra Large, for pets up to 40 kg.
How many cubic inches is that?
The common guide is about 1 cubic inch for each pound, so about 66 cubic inches, roughly 1.1 litres, for a 30 kg dog. It is a guide, not a measured volume.
My dog was exactly 30 kg. Which size is safer?
Medium–Large is right for a dog up to 30 kg. If you are unsure of the weight to the kilogram, going up to Extra Large leaves a little room to spare.
Can I use the outside measurements to check the capacity?
No. The outside size of an urn is larger than the space inside. Tell us the volume you need to hold and we will confirm the size before you order.
What if the crematorium gave me the volume of the ashes?
Use that figure instead of the weight guide, and message us with it before you order so we can confirm the size.
Do all the styles come in the same sizes?
Our dog portrait, wrapped, collar and canopic jar urns use the same three weight bands: up to 15 kg, up to 30 kg and up to 40 kg.
What about a dog over 40 kg?
Message us with their weight before you order so we can talk through the options.