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

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

    10 DIY Halloween Costumes for Cats You Can Create Today (with Pictures)

    When Halloween rolls around, you may be considering dressing up your feline. While there are countless commercial costumes available across the web and...

    How Aggressive Are Tuxedo Cats? What Studies Say

    Do you have a cat with an attitude? Or as many call it, cattitude? If you do, you’re not alone. While some cat...

    Can Feral Cats Spread Diseases to Dogs? Vet-Approved Facts & FAQ

    If you have a feral cat population in your neighborhood (which is quite likely, as feral cats are prevalent in many areas) and...

    10 Senior Cat Litter Box Solutions: Vet-Approved Tips & Recommendations

    As our cats age, it’s important to make small changes around our home to make them more comfortable and their home easily accessible,...

    More related

    10 Ways to Monitor Your Cat’s Health at Home: Vet Verified

    Thanks to their instincts for self-preservation, cats are masters at hiding signs of illness or injuries. If you want to catch medical problems...

    Welcome to Seborga: A Small Mediterranean Nation of Cats

    Tucked away in the southernmost foothills of the Alps, within sight of the Mediterranean Sea, is a tiny and little-known nation teeming with...

    Can Cats Eat Turkey? Vet-Reviewed Nutrition Facts & FAQ

    Turkey is often touted as a fantastic low-fat protein source for people. It’s tasty and packed with nutrients, including magnesium, potassium, and tons...

    How to Teach a Cat to Fetch: 8 Vet-Reviewed Steps

    Fetch isn’t just for dogs—some cats love it too! While teaching a cat to fetch might take some work, once your cat gets...

    Keep reading

    My Cat Is Pressing Their Head Against Me, Should I Worry? Vet-Approved Facts, Causes & Care Tips

    Cats show their affection in funny ways, including rubbing or head-butting you or other pets. They like to rub or bump their head and faces against objects to mark their scent and show love. If your cat is pressing their...

    Girl butting heads with her ginger cat

    Can Cats Eat Turkey? Vet-Reviewed Nutrition Facts & FAQ

    Turkey is often touted as a fantastic low-fat protein source for people. It’s tasty and packed with nutrients, including magnesium, potassium, and tons of B vitamins. But is it safe for cats to eat? Turkey is safe for cats to...

    Can Cats Eat Turkey

    10 Ways to Train Your Kitten: Vet-Approved Tips

    Cats might like us to think that they’re untrainable, but the truth is that most cats enjoy short training sessions! The best time for them to learn is when they are still young, so beginning when your pet is a...

    Tabby cat on white background

    Do Neutered Cats Still Mate? Vet-Approved Facts

    Neutering a cat involves surgically removing a cat’s reproductive organs to prevent them from reproducing. It is done by a veterinarian by the time most cats are around 4 months of age or sexually mature. Owners may choose to get...

    Close-Up Photography of Tabby Cats Laying

    Does Baking Soda Kill Fleas on Cats? Vet-Approved Effectiveness & FAQ

    Baking soda is an effective and inexpensive home remedy for several problems, and you may have heard that baking soda can kill fleas on cats. The idea is that baking soda creates an environment that the fleas cannot survive in...

    baking soda in a glass bowl

    What’s the Cost of Cat Grooming? 2025 Price Breakdown

    While most cats take care of their hygiene without human assistance, there are times when they need assistance in the grooming department. Cats need regular brushing, dental care, and nail clipping to stay in top shape, and longhaired cats require...

    Woman washing cat in grooming salon

    Why Does My Cat Lie on Me? 5 Vet-Reviewed Reasons

    We all love to spoil our cats, so they tend to get new toys and tasty treats more often than we do! Seeing them napping in odd spots around the house inspires many cat owners to purchase a special cat...

    cat sleeping in owner's arms

    Can Cats Eat Dragon Fruit? Vet-Reviewed Facts & FAQ

    Also known as the pitaya or the strawberry pear, dragon fruit is a delicious fruit that grows on the Hylocereus cactus. While most popular in Southeast Asia, this fruit has been growing in popularity worldwide in recent years. You’ve probably...

    Can Cats Eat Dragon Fruit