What Size Dog Crate Do I Need? (Sizing Chart by Breed)

The rule is simple: your dog should be able to stand without crouching, turn around, and lie fully stretched out — and not much more. Too small is cruel; too big undermines house training, because puppies will sleep at one end and potty at the other.

Crate size chart

Weight is a proxy, not the measurement. Two 60 lb dogs can need different crates if one is long and low and the other is tall and narrow, so measure when your dog sits near a boundary between sizes.

How to measure properly

Do this with the dog standing normally, not stretching or sitting.

1. Length: nose tip to the base of the tail — the base, not the tip. Add 2–4 inches.
2. Height: floor to the top of the head while standing. For breeds with upright ears, measure to the ear tips instead. Add 2–4 inches.
3. Round up to the next crate size if either number lands between two.
4. Check the interior dimensions on the product listing, not the model name. A "36-inch crate" describes the exterior, and the usable space inside is smaller once the frame and tray are accounted for.

If your dog sleeps sprawled flat on its side rather than curled, favour the longer size — that stretched-out position is the one the crate has to fit.

The puppy trick: buy adult size + divider

Don't buy three crates as your puppy grows. Buy the adult size for the breed and use a divider panel to shrink the interior, expanding it as the puppy grows. This is exactly why the divider-included wire crates dominate our crate reviews — one purchase covers the whole puppyhood.

Move the divider roughly every few weeks, using the same stand-turn-stretch test each time rather than a calendar:

For a mixed-breed puppy of unknown parentage, paw size and the rescue's estimate are the usual guides. Erring one size up is the cheaper mistake, since the divider covers the difference.

Common sizing mistakes

• Buying for the puppy, not the dog. The single most expensive error in this category, and the reason dividers exist.
• Using the crate as a pen. If you want a dog to have room to move around for hours, you want a playpen or a gated area, not a bigger crate.
• Ignoring the door swing. A 42-inch crate needs clearance in front of it, and in a narrow hallway a double-door model is worth the extra.
• Forgetting the bed. A thick mattress raises the floor and eats headroom. Measure with the bedding you actually intend to use.
• Assuming airline sizing matches. Air travel has its own rules about carrier dimensions and construction, set by the airline rather than by crate manufacturers.

When your dog falls between sizes

Rounding up is usually right, but not always a full size:

Giant breeds, flat-faced breeds and seniors

• Giant breeds often need a size above what a generic weight chart suggests once fully grown — measure at 12 months, not off the breed-average row.
• Flat-faced breeds run hot and breathe less efficiently, so airflow matters as much as floor space — a wire crate in a cool room beats a snug plastic one for everyday home use.
• Senior dogs with joint pain need a low, flat entry, and a supportive bed matters more — measure with that thicker bedding in place.

What a heavy chewer does to a crate

Wire crates hold up to most dogs. Chewed coating exposes bare metal that rusts, and a determined dog can eventually spring a single latch — a genuine wire-bender is where a heavy-duty steel crate earns its cost. Plastic airline crates resist chewing but can crack under repeated weight against the door, and a cracked crate is not airline-legal even if it still closes.

Cleaning and maintenance reality

Wire crates wipe down easily and the tray lifts out for a hose rinse — do this monthly regardless of accidents. Plastic crates hold odor in the seams longer, so an occasional full breakdown-and-scrub helps. Bedding wears out faster than the crate; keep a spare pad so laundry day doesn't leave it bare. On a puppy's crate, check the divider's slide mechanism now and then — a grit-jammed track is why people stop using it.

Which type of crate?

• Wire (divider, folding, airflow) — the right default for home use.
• Soft-sided — travel only, and only for crate-trained non-chewers.
• Plastic/airline — required style for air cargo travel, and more den-like for dogs that settle better with solid walls.
• Heavy-duty steel — for the small number of dogs that genuinely bend wire, and overkill for everyone else.
• Furniture-style — fine for settled adult dogs, terrible for teething puppies.

Whichever style you choose, look at the latches specifically. Single-latch doors are the ones escape artists learn to pop, and a dog that has succeeded once will keep trying.

Size is not the whole job

A correctly sized crate that a dog has never been taught to like is still a box the dog does not want to enter. Sizing is the purchase decision; introducing it properly — food inside, door open, no pressure, never as punishment — is what makes it work.

Full comparisons with prices: Best Dog Crates.