Get

In Your Inbox

Catster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

How Big Should A Litter Box Be? A Vet-Approved Guide

Share

kitten looking up sitting in litter box with sand on bathroom floor

A litter box can seem trivial when preparing for your new cat to come home. However, your cat will use the box multiple times a day, every day, for their entire lives! Add in the fact that cats can be picky with where they do their business, and you suddenly have a much more complex choice to make!

Luckily, by thoroughly researching your options, you can choose the perfect litter box in a size that suits your cat’s needs. In this article, we’ll explain everything you need to consider when choosing a litter box and why the right size is important.

divider 3 paws

Before You Start: Deciding on the Type of Litter Box

It’s a good idea to know what kind of litter box your cat prefers (or will use) before you begin looking for different sizes. Cats can be very particular about their litter box; some prefer open litter boxes, and others prefer closed ones.

There’s no way of knowing what your cat will like until they try it out, but there are ways of making an informed decision. If you’re getting a new kitten, they should be fully litter trained before coming to you; ask the breeder what kind of litter box they used.

If you’re adopting an older cat, ask their previous owners or the shelter you’re getting them from what kinds of litter boxes they like to use. Moving home is a big disruption for any cat, so giving them a box they like is critical to helping them settle in.

cat litter box
Image Credit: Lightspruch, Shutterstock

Preparation: What You’ll Need

You’ll need to gather your materials to accurately measure your cat for a litter box. Having everything to hand before you begin can reduce the stress of the ordeal, and you’ll be able to decide on the size you’ll need. Make sure you have the following before you begin:

  • Soft measuring tape
  • Pen and paper/phone notepad to record measurements
  • A treat to reward your cat!

How to Choose the Right Size Litterbox for Your Cat

1. Determine How Big Your Cat Is (Or Will Be)

The most important factor to consider when choosing which litter box your cat needs is how big your cat is, or how big they’ll grow to be. A litter box needs to feel secure and private for your cat to use it comfortably, and they shouldn’t have to squeeze in to use it.

Your cat should be able to fit in the litter box fully and easily turn around in it, and the total length of the box should be one and a half times the length of your cat from their nose to the base of their tail. Litter boxes come in standard sizes (small, medium, large, etc.), so make sure to look on the product websites for specific measurements or ask a staff member in a store for help.

You then need to measure your cat using a soft measuring tape beginning at the end of their nose and going down their back to the base of their tail. This shouldn’t take too long and is important for getting a correctly sized tray. You may need someone to help you by holding your cat still, but if they get stressed, let them go and try again another time.

If you have a new kitten and wonder how big they’ll eventually be, you can research their breed (if they have one!).

orange-cat-beside-litter-box
Image Credit: jamesjoong, Shutterstock

2. Decide Where You’re Going to Put the Litter Box

After measuring your cat, you can decide where to put their litter box. Cats are picky and usually struggle to use the box if it’s not in a place where they feel secure, but you also don’t want it in the middle of the living room!

It’s best to place your cat’s litter box in a space out of the way and partially hidden, and it should not be close to their food and water.


3. Choose a Type

There are now several types and shapes of litter boxes on the market, and here are the five types of litter boxes to consider:

  • Open
  • Corner-shaped
  • Enclosed
  • Self-cleaning
  • Top-opening

Some cats do perfectly fine with enclosed litter boxes and owners may like them due to reduced mess and smell, but others prefer to see out of the sides of their box to look for danger. Cats are at their most vulnerable when they’re distracted or stuck doing a task (such as using the bathroom!), so keeping an eye out for danger can help them feel more secure.

An open litter box may be more appropriate for tall cats since they don’t have to worry about head clearance! Self-cleaning litter boxes are a newer invention that uses automatic scooping and refilling technology to eliminate the hassle of cleaning your cat’s litter box.

However, they produce noise and vibrations that can disturb cats and can cause them to avoid using the box altogether. Top-opening litter boxes are similar to enclosed litter boxes or high-sided ones, and the opening is on the top rather than the front. Whichever type you choose, it should be easy to clean, cat-safe, and secure.

Cleaning up after our pets is not the most enjoyable part of owning them. Despite keeping a clean litterbox, cat odors and stains may still exist around the house. Sometimes, even the best litter box setup needs extra help. If you're tired of dealing with bad smells from litter boxes, Hepper Advanced Bio-Enzyme Pet Stain & Odor Eliminator Spray can help with the worst pet stains and smells. Additionally, the Advanced Bio-Enzyme Cat Litter Deodorizer neutralizes odors upon contact.

Our Favorite Products

Image Product Details
Best Enzyme Cleaner Hepper Advanced Bio-Enzyme Pet Stain & Odor Eliminator Spray Hepper Advanced Bio-Enzyme Pet Stain & Odor Eliminator Spray
  • Works on multiple surfaces
  • Gentle yet effective
  • Lifts stains & set-in odors
  • Best Litter Additive Advanced Bio-Enzyme Cat Litter Deodorizer Advanced Bio-Enzyme Cat Litter Deodorizer
  • Neutralizes odor within cat litter
  • Cat-safe
  • Unscented
  • At Catster, we’ve admired Hepper for many years and decided to take a controlling ownership interest so that we could benefit from the outstanding designs of this cool cat company!


    4. Look at the Sides and Depth

    High-sided litter boxes are best for cats without mobility issues. Cats instinctively bury their waste because they don’t want predators or other cats to discover it, and some sling the litter everywhere, but a high-sided box can help.

    However, kittens and elderly cats or ones with mobility issues need to get in and out of the box safely and comfortably. Cats with arthritis would have a hard time getting into a litter box with high sides. Low-sided litter boxes are designed specifically for those cats, so consider your cat’s age and health when choosing.

    Your cat’s litter box must also be deep enough to provide space for the right amount of litter. Your cat should have enough litter in the bottom of the tray for them to dig in; some cats like a lot of litter, some prefer less.

    cat sitting on top of several litter boxes looking at another cat leaving toilet through flap
    Image Credit: Nils Jacobi, Shutterstock

    5. Remember the Litter!

    Lastly, don’t forget the litter! There are so many types of litter available that you’ll likely have to try a few kinds to find out your cat’s favorite. Many cats like litter that clumps, which makes the clean-up easier, and a fine clay substrate can simulate the soil they’d dig in in the wild.

    divider 3 paws

    Final Thoughts

    Picking out the perfect-sized litter box for your cat may seem daunting when faced with all the options, but the key to it all is measuring your cat! Once you’ve measured them and decided on the height, look for models that are easy to clean and suit your cat’s needs.

    Remember that kittens will need to size up their litter boxes as they grow, so measuring them at different stages of growth will ensure your cat has the most comfortable box that meets all their toileting needs.


    Featured Image Credit: Andrey_Kuzmin, Shutterstock

    Want content like this delivered to you?

    Sign Up For Our Newsletter

    News, insights, expert advice, and everything cat

    * By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.




    How useful was this post?

    Click on a star to rate (you can leave written feedback after clicking submit)

    Help us improve Catster for pet parents!

    Your feedback really matters.

    What did you like about this post? Also how can we improve it?

    Join the conversation

    Leave a Reply

    You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.


    Talk With A Vet Online

    Peace of mind,
    anywhere, anytime

    Affordable vet advice

    Rescue Cats Deserve Beautiful Endings

    We all know that beauty is only skin deep, and that scars always tell a story, and this is one cat with a...

    Ask Dr. Paola – Help! My Cat Gets Diarrhea from Wet Food! (March 23, 2026)

    Welcome to our “Ask Dr. Paola” series, where every Monday we bring expert advice straight from Dr. Paola Cuevas (MVZ) to help our...

    Cat Shampoo Alternatives That Are Already in Your House

    If your cat has ever gotten into something disgusting and you’ve found yourself without cat shampoo, we’re here to help. Before you panic...

    Licky Treats: A Scientific Investigation into the Tube-Based Delights Taking Over Modern Cat Households

    By Professor Lucifer Fluffovich, Department of Applied Snackology Human civilisation has produced many inventions of questionable usefulness: vacuum cleaners, pyramids, and the laser...

    More related

    From War Heroes to Millionaires: 10 Fun Facts About Tuxedo Cats

    There’s something about a tuxedo cat that feels effortlessly elegant. Maybe it’s the sleek black coat paired with that crisp white “shirt,” or...

    How to Responsibly Rehome a Cat: 9 Vet-Reviewed Considerations & Tips

    Giving up an animal may feel bittersweet, like parting ways with a longtime friend. You should only consider rehoming your cat for serious...

    Pandora’s Syndrome in Cats: Causes, Signs & Treatment (Vet Answer)

    Have you ever been stressed for a long time, and as a result of this had a bad skin break out or picked...

    Manx Syndrome in Cats: Our Vet Explains the Causes, Signs & Treatment  

    The Manx cat is a breed of domestic cat originating on the Isle of Man. Although it’s possible for a Manx cat to...

    Keep reading

    Cat Diarrhea: Causes & Care Guide (Vet Answer)

    If your cat has diarrhea, should you always see a vet? What if your cat has diarrhea but seems fine? Let's look at why cat diarrhea happens and what to do....
    A small gray and white fluffy cat getting out of a litter box.

    Why Does My Cat Look Out the Window All Day? 5 Vet-Verified Reasons & Care Tips

    Does your cat love their window seat? Many cats spend most of their days hanging out by a window to see what’s happening. You might not understand the allure, but you have a fluffy predator on your hands, and it’s...

    ginger cat looking at the window

    What Can My Cat Eat at Thanksgiving? 16 Vet Reviewed Do’s & Don’ts

    Anyone who thinks dogs are the biggest beggars of food in the pet world clearly hasn’t met a cat! However, not all people food is good for our pets. When it comes to Thanksgiving, you may want to celebrate with...

    What Can My Cat Eat at Thanksgiving

    How to Keep Kittens Warm: Vet-Approved Techniques & Safety Tips

    Kittens are cute, cuddly, and a joy to watch as they grow and mature. However, it’s vital to keep them warm for the first few weeks of their life. The younger the kitten, the more important it is for you...

    newborn kitten in man's hand

    Will My Cat Suffocate if They Sleep Under a Blanket? Vet-Approved Facts & FAQ

    Once you bring a cat home, it won’t take long for them to find a blanket, a comforter, a scarf, or another type of cover to burrow beneath. While it may look cute, you may also worry about your pet’s...

    grey and white cat under the blanket

    How Much Is a Rabies Shot for a Cat? (2026 Vet-Reviewed Update)

    Vaccinations are crucial to protect your cats from disease. Arguably, one of the most important vaccines for cats is rabies. It’s not only required by law in many states and jurisdictions, but it’s the best defense against a devastating viral...

    man holding syringe to inject into cat

    Do Cats Lick Themselves to Get Your Scent Off? 3 Surprising Theories

    Have you ever noticed your cat licking themself after being around you or right after you pet them? That’s because cats lick themselves as a way to keep clean and remove our scent from their fur. But why do cats...

    cat licking itself

    Can Cats Eat Hemp Seeds? Vet-Reviewed Facts & FAQ

    Cats like to explore their surroundings, and their adventures often lead them to foods and items they should avoid. With cannabis products becoming more available in the United States, pet parents may be concerned that hemp-related substances are toxic or...

    Can Cats Eat Hemp Seeds

    Love Cats? So Do We! Join the Catster Community

    Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.




    Sign up for the Catster Email Newsletter

    Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.