How to Measure a Dog for a Crate

On this page (8 sections)

1. What measurements do you need for a dog crate?
2. How much room should a dog have in a crate?
3. Should you measure the crate’s inside or outside?
4. How do you choose a crate size from your measurements?
5. How should you size a crate for a puppy?
6. How do you check the fit after setup?
7. What mistakes can lead to the wrong crate size?
8. Which crate should you choose after measuring?

For how to measure a dog for a crate, measure body length and standing height first. Then compare them with the crate’s usable interior space and check that your dog can stand, turn around, and lie down naturally.

A soft tape measure and a calm, standing dog are all you need to begin.

Get help from a second person if your dog tends to move. One person can keep the dog settled while the other measures.

Then you can repeat any number that seems off. For help comparing crate styles and fit, see our guide to how to choose a dog crate.

What measurements do you need for a dog crate?

Measure body length and standing height. Those dimensions give you a useful starting point for comparing your dog with the space inside a crate.

For length, measure from the tip of the nose to the base of the tail. Don’t include the tail itself, and keep the tape straight along the dog’s body.

For height, measure vertically from the floor to the top of the head or ears, whichever is higher. Your dog should stand in a relaxed posture, with their head in a normal position rather than stretched upward.

Write down both measurements and the units you used. Repeat them if your dog shifts position, and use the largest reliable result rather than choosing the smallest number.

How do you measure a dog’s length and height?

Measure length from nose to tail base and height from the floor to the top of the head or ears. Keeping your dog standing naturally makes the numbers more useful for choosing a crate.

Don’t measure while your dog is sitting, curled up, or stretched out on the floor. Those positions change the measurements you need for checking standing room and lying space.

If your dog won’t stay still, take a few measurements and compare them. Ask someone to help keep your dog calm, and repeat the process later if the results vary widely.

How much room should a dog have in a crate?

Your dog should be able to stand without crouching, turn around, and lie down naturally. Check all three movements after you compare measurements with the crate’s interior space.

A dog’s build and usual resting posture matter alongside length and height. If your dog has a broad body or likes to stretch out, pay close attention to how easily they turn and settle.

Weight ranges and breed examples can help narrow the choices, but they don’t replace measuring. Two dogs with the same weight can have different proportions, so check the dimensions and your dog’s movement in the crate.

For an overview of the main styles and their uses, read our complete dog crate buyer’s guide. If you’re set on wire, our guide to choosing a wire dog crate explains other details to compare.

Should you measure the crate’s inside or outside?

Compare your dog’s measurements with usable interior dimensions when they’re available. Exterior measurements include the frame and walls, which reduce the space your dog can use.

The Petmate Vari Kennel 36-inch has an interior measuring 32.5 x 22.2 x 26 in. Its hard shell and wire door make it a useful option for someone who wants a plastic travel kennel with an easy-to-wipe surface; skip it if those interior dimensions don’t let your dog stand, turn, and lie down.

Measure the crate’s intended spot and the doorway it must pass through, too. A crate can fit your dog and still be awkward to move into the room where you plan to use it.

How do you choose a crate size from your measurements?

Choose a crate that accommodates your dog’s measurements and natural movements, then check the fit inside. These MidWest iCrate sizes provide a practical comparison for medium, large, and extra-large dogs.

The 36-inch iCrate is sized for dogs weighing 41–70 lb and has dog-space dimensions of 36.5 x 23.25 x 24.75 in. Its divider panel makes it a good fit for a growing dog that needs adjustable space; skip this size if your dog is near its upper range and can’t move comfortably inside.

The 42-inch iCrate is sized for dogs weighing 71–90 lb and provides 42.5 x 28.5 x 30.5 in of dog space. Choose it when your dog’s measurements and posture need more room than the 36-inch option; compare the next size if your dog is close to 90 lb.

The 48-inch iCrate is sized for dogs weighing 90–110 lb and measures 48.5 x 30.25 x 32 in for dog space. It suits an extra-large dog that needs a larger resting area; skip it if the crate will not fit the room or your dog’s measured space needs are smaller.

Treat weight and size labels as a way to narrow your options, not as a final decision. If your dog is close to the top of a weight range, compare their measurements with the next size and check whether it fits your home.

For breed-specific starting points, read our guides to crate size for a Labrador and crate size for a Golden Retriever.

How should you size a crate for a puppy?

Choose a crate that gives your puppy room to stand, turn, and lie down, then adjust the open area as they grow. A divider panel can help limit the usable space in a wire crate.

Measure your puppy now instead of relying only on an estimate of their adult size. Recheck the fit as they grow, and move the divider when their current space no longer allows comfortable movement.

A divider must be secure and positioned so there isn’t a gap where your puppy could get stuck. Our guide to puppy crate size covers how to choose a starting size and adjust it over time.

How do you check the fit after setup?

Set the crate on a level surface and open the door so your dog can enter at their own pace. Once inside, watch them stand, turn around, and lie down without crouching or pressing into the sides.

If your dog can’t move comfortably, check that you compared their measurements with the interior rather than the exterior. Try a larger size if the current crate restricts movement.

Put only suitable resting items inside and keep the doorway clear. Our guide to what to put in a dog crate can help you choose bedding and other crate items.

What mistakes can lead to the wrong crate size?

The most common mistake is choosing from weight or breed alone. Use those details as a starting point, then compare your dog’s own measurements with the interior.

Another mistake is measuring a dog in a sitting or curled position. Measure while they stand naturally, and check that the crate allows room to turn and rest in their normal posture.

Finally, don’t confuse outside dimensions with dog space. Check interior measurements when available, and measure your doorway and the place where the crate will sit before you choose.

Which crate should you choose after measuring?

Choose the smallest option that still lets your dog stand, turn, and lie down naturally. The 36-inch iCrate suits a medium dog whose measurements fit its dog-space dimensions, the 42-inch option gives a larger dog more room, and the 48-inch model suits an extra-large dog.

Choose the Petmate Vari Kennel if you want a plastic shell and its interior dimensions fit your dog. For a growing puppy, a wire iCrate with a divider offers adjustable space; whichever model you choose, let your dog’s measurements and movement decide the fit.

Frequently asked questions

How do I measure my dog for a crate?

Measure from the nose to the base of the tail while your dog stands naturally, then measure from the floor to the top of the head or ears, whichever is higher. Compare the results with the crate’s usable interior dimensions and check that your dog can stand, turn, and lie down naturally.

Should a dog be able to stand up in a crate?

Yes. Your dog should be able to stand without crouching, turn around, and lie down in a natural position.

Check those movements in the chosen crate, since an outside measurement or a weight range alone cannot confirm that the interior suits your dog.

Should I buy a larger crate for a puppy?

A puppy needs enough room to stand, turn, and lie down, but a very large space can make house training harder for some puppies. A divider can limit the usable area as the puppy grows; adjust it as your dog gets bigger.

How much extra room should a dog crate have?

Use the crate maker’s sizing advice, then check your dog’s posture in person. The right space allows standing, turning, and lying down without crowding, while avoiding so much unused space that the crate no longer feels like a defined resting area.