Getting the crate size right is one of the most important comfort decisions you’ll make. Too small leaves your dog cramped; too large loses the den-like security dogs want and often encourages bathroom use in one corner. The process comes down to two simple measurements and a few inches of cushion.
How Do You Measure Your Dog for a Crate?
You’ll need a soft measuring tape and a dog standing naturally on all fours. Measure in inches and note both numbers before shopping.
- Length: from nose tip to tail base. Exclude the tail itself—the most common sizing mistake, making crates too long.
- Height: from floor to top of head or ear tips, whichever is higher. For erect or cropped ears, that ear height matters.
Add 2–4 inches to each measurement for a home crate. That space lets your dog stand without crouching, turn around, and lie on their side fully stretched out.
The Sizing Rule That Applies to Every Dog
You want a crate that allows standing, sitting, turning, and lying flat—but not much more. This modest extra space keeps the crate a secure den. As PetMD notes, an oversized crate reduces security and can encourage eliminating in one corner. Scale the cushion with size: add about 2 inches for smaller dogs, up to 4 for large breeds.
Manufacturer dimensions matter as much as labels—a “36-inch crate” from one brand can measure differently from another. If fitting a car or room, measure external dimensions separately.
Crate Size Chart by Dog Weight and Length
Charts are a fast shortcut. Hill’s Pet Nutrition provides a widely used breakdown pairing weight with length:
| Dog Weight | Dog Length | Suggested Crate Size |
|---|---|---|
| Under 25 lbs | Up to 20 in | 18–22 in |
| Under 30 lbs | Up to 22 in | 24 in |
| Under 40 lbs | Up to 28 in | 30 in |
| Under 70 lbs | Up to 34 in | 36 in |
| Under 90 lbs | Up to 40 in | 42 in |
| 90–150 lbs | 46–68 in | 48–72 in |
These are starting points; breed proportions shift the right size. When between sizes, lean larger by a few inches. For puppies, plan to size up as they grow—many use a divider panel for adjustable puppy crates to avoid frequent replacements.
Crate Size for Travel, and When Rules Change
Travel crates follow stricter formulas factoring overall length, leg length, widest point, and height, differing between domestic and international flights. Check specific airline requirements before buying and consider a crate meeting the strictest rule you’ll encounter. For puppies, buy for adult weight and use a divider to shrink the space; PetSmart and others sell divider panels with many wire crates.
FAQs
Should I measure my dog’s full tail length for a crate?
No. Measure from nose tip to tail base. Including the full tail adds inches, pushing you into a too-big crate that reduces den-like security.
What if my dog has long legs but a short body?
Height wins. Measure floor to head/ear tops while standing, add 2–4 inches. Long-legged dogs need taller crates even if length suggests smaller—check both dimensions.
Is a crate that’s too big actually a problem?
Yes. Dogs are den animals; an overly spacious crate feels exposed, and gives puppies room to eliminate in one corner and sleep in another, undermining house-training. Keep extra space to 2–4 inches.
References & Sources
- Hill’s Pet Nutrition. “Dog Crate Sizes and Types.” Provides the weight- and length-based crate sizing chart used above.
- PetMD. “Crate Sizing for Dogs.” Confirms the standing measurement method and risks of oversized crates.
- PetSmart. “Dog Crate Size Chart: Finding the Perfect Fit.” Offers a retailer-level sizing guide and covers puppy divider use.