The most-returned pet product on the internet is the wrong-size dog crate — usually bought by weight chart from a listing that lumped your lanky dog in with a round one. The fix is one measurement and one rule: length from nose to tail base, plus 2–4 inches, then buy the standard size above that. A dog measuring 22 inches takes a 30-inch crate. A 34-inch Golden Retriever takes a 42. Here's the whole method, the breed chart, and the airline variant.
Two tape-measure numbers, taken while your dog is standing square:
Add 2 inches for the minimum interior length your dog needs, 4 for comfortable — room to stand, turn, stretch out on their side, and duck in without a shoulder check. Then pick from the standard ladder: 22, 24, 30, 36, 42, 48, 54 inches, all measured as interior length. Weight charts exist, but they mislead exactly the dogs you own: a 65-pound Greyhound carries 30 inches of body and needs a 36-inch crate, while a 50-pound English Bulldog is so wide he's happier in the same 36 than the 30 his length suggests.
Typical adult measurements, with the crate size the rule produces:
| Breed | Weight | Length | Height | Crate |
|---|---|---|---|---|
| Chihuahua | 5 lb | 10" | 9" | 22" |
| Yorkshire Terrier | 7 lb | 12" | 9" | 22" |
| Shih Tzu | 14 lb | 19" | 11" | 24" |
| Pug | 18 lb | 19" | 12" | 24" |
| Dachshund (standard) | 16 lb | 21" | 9" | 30" |
| French Bulldog | 25 lb | 19" | 16" | 24" |
| Beagle | 25 lb | 22" | 15" | 30" |
| Cocker Spaniel | 28 lb | 23" | 16" | 30" |
| Corgi (Pembroke) | 30 lb | 27" | 13" | 36" |
| Border Collie | 42 lb | 28" | 21" | 36" |
| Pit Bull Terrier | 50 lb | 27" | 19" | 36" |
| Siberian Husky | 50 lb | 31" | 22" | 36" |
| Labrador Retriever | 75 lb | 32" | 24" | 36"–42" |
| German Shepherd | 75 lb | 33" | 25" | 42" |
| Golden Retriever | 70 lb | 34" | 24" | 42" |
| Bernese Mountain Dog | 100 lb | 36" | 26" | 42" |
| Great Dane | 140 lb | 40" | 33" | 48"–54" |
| English Mastiff | 160 lb | 42" | 32" | 48"–54" |
Two notes the chart can't carry. Broad-chested breeds — English Bulldogs, broad Frenchies, Rottweilers — should size up one step for shoulder room, because interior width scales with the ladder. And tall-but-short dogs should check the crate's interior height against their ears-up height before ordering; giant-breed Danes and Mastiffs sometimes need an extra-height 54-inch model rather than a standard one.
A crate that fits a growing puppy and nothing else is a crate you'll replace twice. Buy the adult size for the breed and use the divider panel most wire crates include: give the puppy length-plus-4-inches of floor today, and slide the panel back monthly. This isn't just thrift — it's house training. A puppy in an oversized crate will soil the far corner and sleep in the near one, because the instinct to keep the den clean only works when the den is den-sized.
Enter length, height, and weight — or pick a breed — and get the wire size, airline kennel, and divider advice in one shot.
Open the Dog Crate Size Calculator →Cargo travel uses hard kennels sized by series number, matched to weight: 100 (dogs to 10 lb, about 19 inches long), 200 (to 20 lb, 24"), 300 (to 40 lb, 30"), 400 (to 70 lb, 35"), 500 (to 90 lb, 40"), and 700 (to 125+ lb, 48"). IATA rules require the dog to stand fully erect without touching the roof and turn around freely, so verify interior height against your dog's ears-up measurement, and check your specific airline's requirements before buying — they don't all accept every model. The pet shipping cost calculator covers what flying a dog costs; the crate is just the container.
The crate is one half of the new-dog setup; food is the other. The puppy feeding calculator works out calories and meal counts by age, and the dog food calculator takes over once your dog is grown.
Two measurements. Length: from the tip of the nose to the base of the tail — not the tail tip — while your dog stands normally. Height: floor to the top of the head with ears up. Add 2 to 4 inches to the length and make sure the crate's interior height beats your dog's standing height by 2 to 4 inches.
The wire-crate ladder runs 22, 24, 30, 36, 42, 48, and 54 inches, measured by interior length. In round numbers: 22–24 inches for toy breeds, 30 for dogs up to about 40 pounds, 36 for the 40–75 pound middle of the range, 42 for big retrievers and shepherds, and 48–54 for the giant breeds.
For a house-training puppy, yes — extra floor space invites a bathroom corner, which teaches the wrong lesson. For an adult dog, a roomy crate is merely unnecessary. The fix for puppies is a divider panel: buy the adult size, block off most of it, and slide the divider back as the puppy grows.
Size for the adult dog, then divide down. A Labrador puppy headed for 75 pounds will eventually need a 36 or 42-inch crate; buy that with a divider and give the puppy only length-plus-4-inches of it now. You'll replace zero crates instead of two or three.
Wire for the house: best airflow, folds flat, and takes divider panels and covers. Plastic airline-style kennels for travel and for dogs who prefer a den feel; they're also the only cargo-flight-legal option. Soft crates for crate-trained adults at events — never for chewers, escape artists, or unsupervised time.