How Do You Choose the Right Size of Dog Crate Furniture for a Puppy or Adult Dog?

Golden retriever sleeping comfortably inside a modern wooden dog crate furniture

Choose dog crate furniture by its inside size, not the outside size. Your dog should be able to stand, turn around, lie down and stretch out,^[1] and sit without touching the top,^[2] with space left for bedding.^[2]^[3]

Adult dog: Measure standing height, sitting height and length. As a rule of thumb, the inside height minus bedding should clear both heights, and the shorter inside side should be at least as long as your dog.
Puppy: UK dog charities suggest buying a crate your puppy can grow into, or upgrading as it grows.^[1]^[2]^[4] In our view, lean towards the larger crate if you cannot predict the adult size.
Weight limit: Also check the listed dog weight limit. It shows the heaviest dog allowed, not the room.

Why Do the Outside and Inside Sizes of Dog Crate Furniture Differ?

Dog crate furniture is a crate styled as a side table. Its panels, frame and top take up space, so the inside is smaller than the outside figure, by 3 to 8 cm on the example crate below.^[5] Only the inside figures show what your dog actually gets, and a listing that gives only the outside size leaves you guessing.

What Decides the Right Size of Dog Crate Furniture?

Size guide infographic showing dog height and turning space requirements

Your dog’s height: The crate must be tall enough for your dog to stand and sit without touching the top.^[2]
Your dog’s length and turning room: Your dog needs space to turn around, lie down and stretch out fully.^[2]^[4]
Bedding and bowls: PDSA advises leaving room for a bed, bowls and toys,^[2] and Battersea says the space should allow for bedding.^[3] Bedding takes height from the inside figure.
The listed dog limits: A listing may give a dog weight limit and a body length limit beside the dimensions, and both are worth checking.
Your puppy’s expected adult size: Blue Cross suggests judging the size by measuring an adult dog of a similar type.^[6]

How to Check the Usable Room in Six Steps

Six-step guide infographic for checking usable room in dog crates

UK dog charities do not explain how to measure a dog for a crate (Blue Cross only suggests measuring an adult dog of a similar type), so these steps are our own rule of thumb, not an official standard:

Measure your dog: standing height to the top of the head, sitting height to the top of the head, and length from nose to the base of the tail.
Read the inside dimensions on the listing. If only outside dimensions are given, treat the room as smaller and check the product page or manual before ordering.
Subtract the thickness of the bedding you will use from the inside height.
Check that the inside height clears both the standing and sitting heights, and that the shorter inside side is at least as long as your dog.
Check the dog weight limit and body length limit, and how the listing measures body length.
For a puppy, repeat steps 1 to 5 using the expected adult measurements, then choose between buying for the adult size and upgrading later. If no similar adult is available, ask the breeder, rescue or vet for the likely adult size.

What Do UK Dog Welfare Organisations Advise About Crate Size?

Six UK organisations give broadly the same minimum, and some add sitting or tail wagging:

Organisation	Stand	Sit	Turn around	Lie down	Stretch
RSPCA^[1]	Yes	Not mentioned	Yes	Yes	Yes
Dogs Trust^[4]	Yes	Yes	Yes	Yes	Yes, plus wag the tail
PDSA^[2]	Yes	Yes, without touching the top	Yes	Yes	Yes, plus wag the tail
Royal Kennel Club^[7]	Yes	Not mentioned	Yes	Yes, flat	Not mentioned
Blue Cross^[6]	Not mentioned	Yes, without touching the top	Yes	Not mentioned	Yes
Battersea^[3]	Yes	Not mentioned	Yes	Yes	Not mentioned

For puppies, there are two routes:

Route	What they advise	Our view
Buy for the adult size	RSPCA advises a crate big enough to grow into,^[1] and PDSA says to pick a size based on the dog’s adult size.^[2]	One purchase, but the crate is large from the start.
Upgrade as the puppy grows	Dogs Trust says you may need a larger crate as the puppy grows,^[4] and PDSA allows increasing the size as the puppy grows.^[2]	A better fit early on, but a second purchase later.

PDSA says too big is better than too small,^[2] and Blue Cross says that if in doubt, the large side is better.^[6]

Worked Example Checking One Crate Against a 20 kg Dog

Large dog breeds displayed above a wooden furniture crate size guide

The PawHut 98cm Dog Crate Furniture with Removable Cushion (D02-169V73GY) lists both outside and inside figures.^[5] The example dog is invented and is not a breed standard: 20 kg, 55 cm standing height, 52 cm sitting height and 48 cm from nose to base of tail. Figures are correct at the time of writing.

Measure	Listed figure (cm unless stated)
Outside, longer side x shorter side x height	98 x 58 x 61
Inside, longer side x shorter side x height	94 x 50 x 58
Cushion	4 cm thick
Listed dog limits	30 kg, 60 cm long

With the cushion in: The 4 cm cushion on the floor leaves 54 cm of inside height, 1 cm below the 55 cm standing height, so this dog fails the height check.
With the cushion out: The 58 cm of height leaves about 3 cm above the standing height, and the 50 cm shorter side leaves 2 cm beyond the dog’s 48 cm length, a snug pass by the rule of thumb.
Listed limits: The dog is inside both, if the listing measures length the same way, so the limits alone would not show the cushion issue.
Price and delivery: The crate is listed at £119.99, with free UK mainland delivery (a courier fee applies to Northern Ireland) and 30 calendar days from delivery to contact Aosom about a return. Return shipping may be charged on non-warranty returns.^[5]

Common Mistakes When Sizing Dog Crate Furniture

Gray wooden dog crate furniture doubling as a modern side table

Using the outside size for the dog: Use the outside figures only for the floor space.
Sizing only for today’s puppy: A crate that suits the puppy now may be outgrown, and Dogs Trust notes you may need a larger one as the puppy grows.^[4]
Forgetting the bedding: Bedding thickness comes off the inside height, as the example shows.
Checking only one height: The crate must clear whichever of the standing and sitting heights is taller, and PDSA and Blue Cross both ask for headroom when the dog sits.^[2]^[6]
Skipping the check after assembly: Measure the inside again once the crate is built and compare it with the listing while the return window is open.
Ignoring the space around the crate: Measure the floor space and the doorway the crate has to pass through as well as the crate itself.

Quick Size Check Before You Buy

Use the inside dimensions from the listing for the height and turning checks.

Check	Pass if (our rule of thumb)
Height	Inside height minus bedding is above both standing and sitting height
Turning room	The shorter inside side is at least as long as the dog
Weight and body length	The dog is inside both listed limits
Floor space	The outside footprint fits the spot in the room

These tests are a minimum. They do not measure tail-wagging or full stretching room, so where a dog only just passes, PDSA and Blue Cross favour the larger crate.^[2]^[6]

Choosing the Right Crate Size

Choose dog crate furniture by the inside room rather than the outside figure, since that is the space your dog can use.

Adult dog: Measure standing height, sitting height and length, then check that, by our rule of thumb, the inside height minus bedding clears both heights and the shorter inside side is at least as long as your dog.
Limits: Check the listed dog weight and body length limits too.
Puppy: Use an adult dog of a similar type to estimate the final size, then decide whether to buy for that size now or upgrade later. If the adult size is hard to predict, lean towards the larger crate.

FAQs

1. What size should a dog crate be for my dog?

It should be large enough for your dog to stand, sit without touching the top, turn around, lie down and stretch out.^[2]^[4] Measure your dog’s standing height, sitting height and length, then compare them with the inside dimensions on the listing.

2. How do you measure a dog for a crate?

UK dog charities do not explain how to measure a dog for a crate (Blue Cross only suggests measuring an adult dog of a similar type), so our rule of thumb is to measure three things: standing height to the top of the head, sitting height to the top of the head, and length from nose to the base of the tail. Treat these as a starting point.

3. Should a puppy's crate be bought for its adult size?

In our view, yes if the adult size is easy to predict, because it avoids a second purchase. The RSPCA advises a crate big enough to grow into,^[1] and PDSA also allows increasing the size as the puppy grows.^[2]

4. Can a crate be too big for a puppy?

PDSA and Blue Cross both prefer a crate that is too big to one that is too small: PDSA says too big is better than too small, and Blue Cross prefers the large side if in doubt.^[2]^[6] Neither sets an upper size limit for use at home, so ask a vet or trainer if you have a concern about a very young puppy.