Dog crate size guide: how to measure and which type to buy

A crate that's too small is uncomfortable. One that's too big can backfire during house-training, because a puppy may use one end as a bathroom. The good news is that sizing comes down to two measurements you can take in a minute.

How to measure your dog

1. Length: with your dog standing, measure from the tip of the nose to the base of the tail (not the tip). Add 2 to 4 inches.
2. Height: with your dog sitting upright, measure from the floor to the top of the head, or to the ear tips if the ears stand up. Add 2 to 4 inches.

Pick a crate whose interior length and height are at least those numbers. Note that crate sizes are usually named by their exterior length ("a 36-inch crate"), and interior dimensions are a little smaller. Check the listing for both.

Your dog should be able to stand without ducking, turn around, and lie down stretched out.

Rough size classes

Manufacturer charts vary, so use these as a starting point and confirm with your measurements:

Crate length	Commonly suggested for
24 inches	Toy breeds and small dogs
30 inches	Small to medium dogs
36 inches	Medium dogs
42 inches	Medium to large dogs
48 inches	Large dogs
54 inches and up	Giant breeds

Weight ranges on listings are only a guide. A long, low dog and a tall, lean dog of the same weight need different crates.

Buying for a puppy

Buy the crate for your dog's adult size and use a divider panel to shrink the space while they're small. Move the divider back as they grow. Many wire crates include a divider; check before you buy. If you don't know your puppy's adult size, your vet or breeder can usually estimate it.

Choosing a crate type

Type	Best for	Watch out for
Wire	Home use, puppies, good airflow and visibility; usually folds flat	Can rattle; some dogs prefer a cover for a den-like feel
Plastic (hard-sided)	Travel, dogs that like an enclosed space	Less airflow and visibility; check airline requirements
Soft-sided	Calm, crate-trained dogs; light travel	Not for chewers or escape artists
Heavy-duty (metal)	Determined escape artists, strong chewers	Heavy and expensive; look for welded construction and secure latches
Furniture-style	A crate that doubles as a side table	Make sure ventilation and interior size still meet your measurements

Double doors (front and side) make it easier to fit a crate into a room layout. A removable tray in a wire crate makes cleaning much easier.

Travel and airlines

If you'll fly with your dog, check your airline's rules before you buy. Airlines set their own requirements for crate size, materials, ventilation and hardware, and many follow international (IATA) guidance that the animal must be able to stand, turn around and lie down naturally. In-cabin pets usually need a soft carrier that fits under the seat in front of you.

For car travel, look for crates or carriers that can be secured so they don't slide or tip in a sudden stop.

Comfort and safety

• Add a washable mat or bed that fits the floor without bunching.
• Many trainers suggest removing collars with dangling tags while a dog is crated, so the tags can't catch on wire.
• Place the crate somewhere your dog can still see or hear the family, out of direct sun and away from heaters.
• Make the crate a good place: meals and treats inside, never as punishment.

Questions people ask

Can a dog crate be too big?

For house-training, yes. Extra space can let a puppy sleep at one end and go to the bathroom at the other. That's what divider panels are for. For an adult, house-trained dog, a little extra room is fine.

Should I cover my dog's crate?

Many dogs settle better with a cover over the top and sides, which makes it feel more like a den. Leave the front open enough for airflow, and remove the cover if your dog tries to pull it in and chew it.

How long can a dog stay in a crate?

It depends on age, health and training. Puppies can't hold their bladder for long. Ask your vet or a trainer for guidance specific to your dog.