A crate that's the right size makes house-training easier and gives your dog a secure den; one that's too big or too small does the opposite. Enter your dog's two key measurements and we'll tell you the standard crate size to buy — plus how to size up for a growing puppy.
Editorially ReviewedCrate sizes are sold by length (the "30-inch crate," "36-inch crate," and so on). The recommended size is the smallest standard crate your dog can comfortably stand, turn, and stretch out in — the sweet spot for both comfort and house-training.
The two measurements that matter, done right.
Buy adult size, use a divider.
Wire vs plastic vs soft-sided.
Crate training the kind way.
The goal is "just right." A crate should let your dog do exactly three things comfortably: stand up without crouching, turn around fully, and lie down stretched out. Anything smaller is unkind; anything much bigger creates problems of its own.
To get there, we take your dog's two key measurements and add a buffer:
Crates are sold by length in standard increments, so we round up to the nearest standard size that meets both minimums.
It seems generous to give a dog extra room, but an oversized crate actively undermines house-training. Dogs have a natural instinct not to soil where they sleep — that instinct is the entire foundation of crate training. In a too-large crate, a dog (especially a puppy) can comfortably potty in one end and curl up clean in the other, and the instinct never kicks in.
An oversized crate can also feel less secure. The den-like snugness of a properly-sized crate is part of what makes it calming for anxious dogs.
Measuring your specific dog is always most accurate, but this chart gives the typical standard crate size by adult weight and shows example breeds:
| Crate length | Adult weight | Example breeds |
|---|---|---|
| 18-22" | Up to 12 lb | Chihuahua, Yorkshire Terrier, Pomeranian |
| 24" | 13-25 lb | Mini Dachshund, Pug, Boston Terrier, small mixes |
| 30" | 26-40 lb | French Bulldog, Beagle, Cocker Spaniel |
| 36" | 41-70 lb | Bulldog, Border Collie, Australian Shepherd, Spaniels |
| 42" | 71-90 lb | Labrador, Golden Retriever, Boxer, German Shepherd |
| 48" | 91-110 lb | Rottweiler, Doberman, large Shepherds |
| 54"+ (XL) | 110+ lb | Great Dane, Mastiff, Saint Bernard, Newfoundland |
Don't buy a series of crates as your puppy grows — buy the adult size now and use a divider panel to shrink the usable space.
"The divider is the single most useful crate accessory for a new puppy. A correctly divided crate keeps the den-instinct intact during the exact weeks when house-training is being established."
A crate works because the dog loves it, not because it traps them. Build the association carefully:
The right crate is just big enough to stand up, turn around, and lie down stretched out — and no bigger.
Measure length (nose to tail base) and sitting height (floor to top of head), add about 4 inches to each, and match to the nearest standard size (common lengths: 24, 30, 36, 42, 48"). A too-large crate undermines house-training.
Buy the adult size and use a divider to block off the extra space while they grow. Most wire crates include one.
A puppy in a too-large crate will often potty in the unused end, sabotaging house-training. Move the divider back as they grow. Our Puppy Weight Predictor estimates adult size.
Neither extreme is good. Too small is unfair; too big undermines house-training and reduces the calming den feel.
If you're between sizes, choose the smaller one as long as the dog can fully stand, turn, and lie down. For a growing puppy, size up and use a divider.
Two measurements. Length: standing, nose tip to base of tail (not the tail). Height: sitting, floor to top of head (or ear tips for erect-eared breeds).
Add about 4 inches to each to get the minimum crate dimensions.
Wire crates are the most versatile: ventilated, collapsible, easy to clean, and usually include a divider for puppies.
Plastic crates are cozier and required for air travel; soft-sided are light and travel-friendly but easily destroyed by chewers. For a first crate, wire with a divider is most practical.
A low-traffic but not isolated spot — a corner of the living room or bedroom. A crate banished to the basement can feel like punishment.
Keep it away from heat, drafts, and direct sun. Some owners use two crates (day and night). The crate should always be a positive space, never punishment.