Audrey HayesBy Audrey Hayes

Updated November 2026

A 42 inches dog crate is a common mid-to-large size, usually sized for dogs roughly 50 to 70 pounds, depending on build and breed. By the end of this guide, you will know how to measure your dog, decide whether a 42-inch model is the right length and height for them, and set the crate up so it works for sleeping, resting and short stays. Manufacturers’ size charts vary, so the numbers below are starting points rather than rules.

What a 42 Inch Dog Crate Actually Measures

When people say “42 inches,” they usually mean the length of the crate, measured from front to back along the floor. Some listings instead give the width or the overall height. Before you buy, check the product specifications for three numbers: length, width and height. A crate that is 42 inches long may be only 28 to 30 inches wide and 28 to 31 inches tall, which changes how much head room and turning space your dog gets.

Shopping for one? See our guide: Dog Beds for Crate Training: 6 Best Picks for Every Need (2026).

Many 42-inch crates are designed for a single adult dog. Some are built as double-door or divided models, and a few are sold as “extra large” with a divider panel. If you need to know how a divider works, the guide to Vibrant Life Double Door Folding Dog Crate with Divider: Setup and Sizing Guide explains how dividers are typically set and used.

Step 1: Measure Your Dog Correctly

Good crate sizing starts with three measurements taken while your dog is standing naturally. Use a soft tape measure and keep the tape snug but not tight.

  1. Length: Measure from the tip of the nose to the base of the tail, along the back. Add 2 to 4 inches for a comfortable sleeping length.
  2. Height: Measure from the floor to the top of the head or the tips of the ears, whichever is taller. Add 2 to 4 inches so your dog can stand without ducking.
  3. Width: Measure across the widest part of the body, usually the shoulders or the ribcage. Add 2 to 4 inches so your dog can turn around.

Compare these numbers against the interior dimensions of the crate, not the exterior listing. Interior measurements are what matter. The article on Sizing a Crate for an Adult Dog walks through the same math in more detail.

Step 2: Check Whether a 42 Inch Crate Fits Your Dog

A 42-inch crate tends to suit dogs whose body length falls between about 30 and 36 inches (nose to tail base) and whose standing height is up to roughly 24 to 27 inches. Use the table below as a rough guide, then confirm against the manufacturer’s chart.

Your Dog’s Measurement Likely Fit in a 42 Inch Crate Notes
Body length under 30 inches May be too roomy for early training Consider a smaller crate or a divider panel
Body length 30 to 36 inches Usually a good match Check standing height before buying
Body length over 36 inches Likely too short Look at 48-inch or larger models
Standing height over 27 inches Risk of head contact with the top Height matters as much as length

Step 3: Choose the Right Features for Your Home

Crates in this size range come in wire, plastic, soft-sided and furniture-style designs. Each has trade-offs for noise, airflow, cleaning and visibility. Wire crates offer strong airflow and easy viewing, while plastic models are more enclosed and often feel cozier to a dog that likes a den-like space. Soft-sided models are lighter but are not always suitable for dogs that chew or dig.

If your dog is a strong chewer or a determined escape artist, prioritize a sturdy frame and secure latches. The guide to Wire Dog Crates: Home Use and Limits covers the pros and cons of metal construction, and Plastic Dog Crates: Uses for Home and Travel covers the enclosed style.

Checklist: What to Look For

  • Interior dimensions that match your dog’s measurements plus 2 to 4 inches
  • A removable tray for easy cleaning
  • Latches that a dog cannot push open with a paw or nose
  • A divider panel if you plan to use the crate for a growing puppy
  • Enough floor clearance for airflow under the base
  • Easy-to-clean surfaces, since accidents and chewing are common in training

Step 4: Set Up the Crate for Comfort and Training

Placement and bedding make a large difference in how a dog feels in a crate. Place the crate in a quiet but not isolated spot, such as a corner of the living room or near a bedroom door. Avoid direct drafts, heating vents and spots in full sun that could overheat the dog.

  1. Add a bed that fits. Choose a bed sized to the crate floor, with a little room for your dog to stretch. A bed that is too large can become a chew target or a source of accidents.
  2. Add a crate cover if needed. A cover can help a dog that gets startled by noise or movement. Leave the front partly open so there is airflow.
  3. Use a divider for puppies. If you bought a 42-inch crate for a puppy who will grow into it, block off part of the space with the divider so the puppy cannot use the far end as a bathroom.
  4. Place a few safe toys. Choose durable chew items and avoid loose strings or small parts.
  5. Start with short sessions. Let the dog explore the open crate with the door propped open before you close it.

Step 5: Build a Gradual Training Routine

Most dogs adjust to a new crate in stages. Begin by feeding meals near the open crate, then in the crate with the door open, then with the door closed for a few seconds at a time. Increase the time gradually while keeping your dog calm. If your dog shows signs of distress such as persistent barking, drooling or scratching at the door, shorten the next session and go back a step.

For a day-by-day outline, see Schedule for Crate Training: A Step-by-Step Daily Plan for Puppies and Dogs. If you are working on house training alongside crate use, Potty Training Dog Crate: A Step-by-Step Guide for New Puppy Owners explains how to time bathroom breaks.

Common Mistakes to Avoid

  • Buying for a puppy’s adult size without a divider. A large open space can make house training harder.
  • Ignoring standing height. A long crate may still be too short for a tall dog.
  • Using the crate as punishment. Dogs learn to dislike a space used for timeouts or scolding.
  • Leaving a dog crated for long stretches. Adult dogs generally should not be confined for many hours at a time without breaks.
  • Trusting a size chart without measuring. Breeds vary, so measure your own dog before buying.

Tips for Success

  • Measure twice, comparing against interior dimensions, before ordering.
  • Keep the crate in the same spot so your dog knows what to expect.
  • Feed meals in the crate to build a positive association.
  • Watch for overheating in warm weather and move the crate to a cooler area if needed.
  • If you have an unusually shaped dog, such as a deep-chested breed or a dog with a long neck, double-check the height more carefully.

Several supporting items make a 42-inch crate easier to use. A well-fitted bed keeps the floor comfortable, and a divider helps with puppies. A tray liner is useful for cleanup. A few options to look at:

  • Orthopedic crate bed – A bed sized for a 42-inch crate floor gives joint support for adult dogs. View on Amazon
  • Divider panel for wire crate – Useful for puppies and for keeping the sleeping area small. View on Amazon
  • Crate cover – Helps dogs that are sensitive to visual stimulation settle more easily. View on Amazon
  • Removable crate tray liner – Makes cleanup faster after accidents. View on Amazon

FAQ

Is a 42 inch dog crate big enough for a Labrador?

Many adult Labradors fit well in a 42-inch crate, especially if the dog is on the smaller end of the breed’s range. Measure your dog’s length and standing height first, because some Labradors need a 48-inch crate for comfortable standing.

How do I know if the crate is too big for my puppy?

A crate is generally too big when the puppy can use one end as a bathroom and sleep at the other. Use a divider to reduce the space while the puppy is small, then remove it as the puppy grows.

Can a 42 inch crate be used for travel?

Some 42-inch crates are made for car or home use but may be too large or heavy for certain travel setups. Check the airline or vehicle rules before you travel. The guide on Travel Dog Crates: Car and Air Travel Rules covers the requirements.

Should I buy a wire or plastic 42 inch crate?

Wire crates offer airflow and visibility, while plastic crates feel more enclosed. Choose based on your dog’s temperament and your home setup. Both can work well if sized correctly.

Can I leave my dog in a crate all day?

Adult dogs should not be crated for long periods without breaks. Plan for regular bathroom breaks, exercise and companionship. If you need to be out for a full workday, consider a dog walker or daycare. Consult a veterinarian or certified trainer if you have concerns about your dog’s routine.

What bedding is best for a 42 inch crate?

A bed sized to the crate floor with a little space for stretching is usually best. Choose a washable, chew-resistant bed, and check it regularly for wear.

How do I clean a 42 inch crate?

Remove the tray and bedding, wash them with a pet-safe cleaner, and rinse thoroughly. Wipe the frame and walls, then let everything dry completely before putting the bed back in.

Will my dog outgrow a 42 inch crate?

Adult dogs usually stop growing in height and length by about 12 to 18 months, though this varies by breed and size. Recheck measurements once your dog reaches adult size before deciding whether the crate is still a good fit.

Conclusion

A 42 inches dog crate can be a practical choice for many adult dogs in the mid-to-large range, but the right fit depends on length, standing height and width. Measure your dog, compare those numbers against the interior dimensions, and set the crate up with a fitted bed and a gradual training routine. Taking those steps will make the crate a safe, comfortable place for your dog to rest.

Ready to choose one?

Audrey Hayes

About Audrey Hayes

Audrey Hayes is part of our editorial team and reviews and edits our dogs & puppies guides, checking product details against manufacturer specifications and owner feedback.