Affiliate Disclosure: This post contains Amazon affiliate links. If you purchase through these links, I earn a small commission at no extra cost to you.
Why Crate Size Matters More Than You Think
When I worked at the clinic in Portland, I saw countless dogs with crate anxiety. Usually, it came down to sizing. A crate that's too small causes physical pain and panic. But a massive crate completely defeats the purpose of housetraining. Dogs won't hold their bladder if they have room to use one corner as a bathroom and sleep in the other. Getting the size right is crucial.
The good news? Measuring takes two minutes. Grab a tape measure, and I'll walk you through it.
How to Measure Your Dog for a Crate
You only need two numbers: length and height. Don't rely on weight alone.
Step 1: Measure Length
Get your dog to stand square on all four legs. Measure from the tip of their nose to the base of their tail. Don't measure to the tip of the tail. (Benny's tail alone adds a foot, which would put my 9-year-old lab/pit mix in a crate the size of a minivan). Add 2 to 4 inches to that number. That's your minimum length.
Step 2: Measure Height
Keep them standing. Measure from the floor to the top of their head. If they have prick ears that stand straight up, measure to the ear tips. Add 2 to 4 inches. That's your minimum height.
Step 3: Choose the Crate
Armed with those numbers, check your fit. Your dog needs enough room to:
- Stand up without crouching
- Turn around in a full circle without difficulty
- Lie down with legs extended without pressing against the wire
If you're stuck between two sizes, go up. You can use a divider panel to block off the extra space for a puppy and expand it as they grow over those first six months.
Try our free tool: Crate Size Finder -- get an instant crate size recommendation by breed or your dog's measurements.
Crate Size Chart by Breed
| Crate Size | Dimensions (L x W x H) | Example Breeds |
|---|---|---|
| XS (18-22 in) | 18" x 12" x 14" to 22" x 13" x 16" | Chihuahua, Yorkie, Pomeranian, Maltese |
| Small (24 in) | 24" x 18" x 21" | Pug, Shih Tzu, Boston Terrier, French Bulldog |
| Medium (30 in) | 30" x 19" x 21" | Beagle, Cocker Spaniel, Corgi, Miniature Schnauzer |
| Intermediate (36 in) | 36" x 23" x 25" | Border Collie, Brittany, Bull Terrier, English Springer Spaniel |
| Large (42 in) | 42" x 28" x 31" | Boxer, Golden Retriever, Labrador Retriever, Australian Shepherd |
| XL (48 in) | 48" x 30" x 33" | German Shepherd, Doberman, Rottweiler, Weimaraner |
| XXL (54 in) | 54" x 37" x 45" | Great Dane, Mastiff, Saint Bernard, Irish Wolfhound |
Important: Here's the thing. This chart is just a starting point. Always measure your actual dog. Maple, my 2-year-old Australian Shepherd, easily needs a 42-inch crate because she's leggy. A stockier Aussie might fit perfectly in a 36-inch.
Types of Dog Crates
Wire Crates
These are the standard for everyday home use. They offer massive ventilation and visibility. I've tested dozens of these over the years. Most models fold completely flat, which makes storage a breeze.
Best for: General crate training, home use, dogs who like to see their surroundings
My pick: MidWest iCrate Double Door -- includes a free divider panel, folds flat, and comes in every size from 18 to 54 inches. What sealed it for me was how well the latches align even after six months of daily use.
Plastic (Airline) Crates
These are hard plastic shells with a wire door. They create a dark, enclosed vibe. Some anxious dogs actually prefer this over the exposed feeling of a wire crate. (I wipe these down constantly during my monthly volunteer shifts at the Multnomah County Animal Shelter. They clean up fast). Most are airline-approved for travel.
Best for: Air travel, dogs who prefer an enclosed space, cold environments
My pick: Petmate Sky Kennel -- meets IATA requirements for air travel, durable shell, secure latch system. It holds up against serious scratching.
Soft-Sided Crates
I love these for road trips. They pop up in seconds. I'd skip this if your dog is a puppy, a digger, or a chewer. Maple would shred one of these in ten minutes flat. But for a mellow, crate-trained adult dog, they're fantastic.
Best for: Travel, car rides, well-trained adult dogs, temporary use at events
My pick: EliteField 3-Door Folding Soft Crate -- three mesh doors, multiple sizes, includes carrying bag and fleece bed.
Heavy-Duty Crates
Built from reinforced aluminum or steel, these are designed for escape artists. The honest downside is the massive price tag. But if you have a dog with severe separation anxiety, the investment is worth it. They're virtually indestructible.
Best for: Escape artists, dogs with separation anxiety, heavy chewers
My pick: Impact Dog Crate (Collapsible) -- aluminum construction, rounded corners, reinforced latches, built in the USA. (I've tested cheaper metal knockoffs, and the welds always snap. This one hasn't budged after a year of testing).
When to Size Up
You'll know it's time to upgrade when you see these signs:
- Your dog can't stand up fully without their head or ears touching the top
- They can't turn around comfortably without thumping the sides
- They can't stretch out when lying on their side (Benny needs extra stretching room for his hip dysplasia, so I monitor this closely)
- You notice your dog seems reluctant to enter the crate when they'd previously had no issue
For puppies, check their fit every two weeks during major growth spurts. If you bought a wire crate with a divider, just move the panel back as they grow instead of buying a new crate.
Common Crate Sizing Mistakes
Setting up a crate for a new puppy? Our New Puppy Starter Kit bundles the right crate with training treats, toys, and essentials.
During my five years as a vet tech, I saw people make the same few errors constantly.
Mistake 1: Buying the biggest crate possible. More space isn't always better. If you're housetraining, the crate should only be large enough for them to stand, turn, and sleep. Extra space just gives them a designated bathroom corner.
Mistake 2: Using the same crate for a puppy and adult dog without a divider. Plunking a 10-pound puppy into a 48-inch crate is asking for accidents. Use a divider panel. It saves you from buying four different crates in one year.
Mistake 3: Measuring to the tip of the tail. Always measure to the base of the tail. Dogs curl up when they sleep. Including a long tail in your math will result in a comically oversized crate.
Mistake 4: Ignoring dimensions for weight. Most vets I know recommend looking at dimensions first. Weight alone lies. A 50-pound Basset Hound and a 50-pound Standard Poodle need vastly different crates. Grab that tape measure. (I keep a spreadsheet of product dimensions for a reason).
Final Thoughts
Looking for breed-specific sizing? See our best dog crates for German Shepherds.
Nailing the crate size isn't complicated. You just have to actually measure your dog. Taking two minutes to measure saves you from boxing up a giant wire cage for a return. Plus, it sets your dog up for a stress-free experience.
If you're starting from scratch, a wire crate with an included divider panel -- like the MidWest iCrate -- is the smartest starting point. After testing over 600 dog products since 2019, this remains the most versatile and cost-effective choice for most dogs.
Related Reading
- 5 Best Dog Crates 2026 -- Our top crate picks tested and reviewed
- Dog Separation Anxiety Guide -- When crate training meets anxiety
- New Puppy First Year Guide -- Crate training in the broader context