What Is The Measurements Of A California King Mattress?

Dimensions of a California King Mattress

The California King mattress, commonly known as the “Cal King,” measures 72 inches wide by 84 inches long. This makes it one of the largest standard mattress sizes available, primarily designed for people who are taller than average, as its additional length provides extra space from head to toe.

Understanding the Size of a California King Mattress

The Cal King is not to be confused with a standard King mattress, which is 76 inches wide by 80 inches long. While the King mattress is wider, the California King is four inches longer. This particular size is ideal for those who need more foot room, and it is also well-suited for narrow bedrooms where its slightly slimmer profile might be a better fit.

Sleeping Solo or With a Partner?

When choosing a California King, it’s important to consider your sleeping arrangements. If you’re sleeping solo but crave ample space and stretch room, a Cal King can feel quite luxurious. Couples might find a California King less width-wise spacious than a standard King, but if one or both partners are particularly tall, the extra length can make a big difference in comfort.

Room Size Considerations

Before selecting a California King, it’s crucial to measure the bedroom. As a rule of thumb, you want to allow at least two feet of space around the three sides of the bed that aren’t against the wall to ensure that you can move around the room comfortably. Ideally, the bedroom should be at least 12 feet by 12 feet to accommodate a bed of this size, including enough space for nightstands and walking room.

Benefits of a California King Mattress

The California King mattress provides numerous benefits, particularly for specific sleepers’ needs. Here are some of its advantages:

More Length for Taller Individuals

Tall people will appreciate not having their feet dangle off the edge of the bed, as the Cal King offers four extra inches in length compared to a standard King and Queen size.

Ideal for Narrow Rooms

Because it’s slightly narrower, a California King can fit more comfortably in rooms that are long but not particularly wide. This shape also lends well to the room’s aesthetic, offering a balanced look in certain architectural spaces.

Great for Larger Bedding Accessories

A Cal King bed is compatible with luxury bedding accessories such as large comforters, duvets, and high-quality bed sheets designed for exclusive comfort and style.

Versatility in Decor

The unique dimensions of a California King can be a statement piece in home decoration. It offers a grand appearance and serves as a centerpiece in the bedroom.

Considerations When Purchasing a California King Mattress

However, there are additional considerations to keep in mind when shopping for a California King:

Bedding and Accessories

Because California King is a specialized size, bedding and accessories may be slightly more expensive and less readily available than those for standard King or Queen beds. You might have to look a little harder to find a wide variety of choices.

Cost of Mattresses

California King mattresses can also be more costly due to their size and less common production. The investment extends beyond the mattress to bed frames and bases that fit the unusual dimensions.

Moving and Transport

Consider the logistics of moving a mattress of this size into your home. Narrow staircases, sharp corners, and tight door frames can pose challenges for larger mattresses. Ensure that you have sufficient space to maneuver the mattress to its intended room.

Different Types of California King Mattresses

California King mattresses come in various types and construction, just like other mattress sizes.

Memory Foam

Memory foam mattresses are favored for their contouring and pressure relief properties. They cradle the body and are a great choice for side sleepers. However, keep in mind that they can retain heat, which may be uncomfortable for hot sleepers unless infused with cooling gel or copper elements.

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Latex mattresses provide a more responsive and often cooler sleep surface. They are preferred by sleepers who like a bit of bounce and environmental-friendly materials, as natural latex is harvested from rubber trees.


For those who enjoy a traditional mattress feel, innerspring options are available in California King size. These mattresses have a coil support system and are often firmer, offering strong edge support and temperature neutrality.


Hybrid mattresses blend foam or latex layers with an innerspring system, providing a combination of support and contouring comfort. These can be a great all-around option for couples with different sleeping preferences.

How to Choose the Right California King Mattress

Selecting the best California King mattress depends on your personal preferences, sleep habits, and physical needs.

Your Sleeping Position

Side sleepers usually benefit from a softer mattress that can alleviate pressure on the hips and shoulders. Stomach sleepers typically require a firmer surface to keep their spine aligned, while back sleepers may prefer something in between.

Body Weight

Heavier individuals may need a firmer mattress that provides adequate support, whereas lighter sleepers might find comfort in a softer mattress.

Pain and Pressure Relief

If you suffer from chronic pain, particularly back pain, look for a mattress designed for pain relief with targeted support zones.

Temperature Regulation

If you sleep hot, consider cooling technologies, such as gel-infused foam, breathable cover fabrics, and innerspring or hybrid designs that allow for airflow.

Finishing Thoughts

A California King mattress offers an expansive and comfortable sleeping area, particularly beneficial for taller individuals or for those looking to furnish a uniquely sized bedroom. It’s important to bear in mind the space requirements of a Cal King, as well as the additional costs associated with larger bedding accessories and sometimes higher-priced mattress options. Understanding the materials, benefits, and considerations of a California King can ensure that your investment in a good night’s sleep is well suited to your long-term comfort and satisfaction. Remember to consider your sleeping position, body type, and any specific sleep needs when making your choice. After all, a mattress is not just a bedroom furniture piece; it’s an essential component of your daily well-being.


  • Leo Murray

    Hey, I'm Leo Murray, your friendly guide to the galaxy of great sleep at GoodlSleepHub. As a certified Sleep Therapist with a lively spirit for all things restful, I'm here to take the mystery out of your zzz's. My mission is to make good sleep accessible to everyone, mixing solid science with a dash of humor. When not demystifying sleep cycles or hunting down the best mattresses, I'm an avid mountain biker and a coffee connoisseur. My weekends often involve exploring new trails or experimenting with coffee blends. These adventures fuel my philosophy: great days are born from great nights. So, come along as we journey through the night skies of sleep. I promise to keep it informative, light-hearted, and always focused on getting you the restful sleep you deserve. Remember, in Leo's world, every night is an opportunity for a perfect dream!

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