California King Mattresses
Shop award-winning California King size foam mattresses for great sleep, at an even greater price.
A California King mattress is 84 inches long and 72 inches wide.
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California King
The longest standard mattress on the market, the California king mattress measures a whopping 72 inches wide and 84 inches long. Its generous length makes it ideal for taller individuals, especially people more than six feet tall. Of course, people of average height might also benefit from a California king depending on how many people and pets are sharing the bed.
Mattress Sizing Chart
Twin Mattress - 38" x 75" : Often found in kid's rooms and studio apartments.
Twin XL Mattress - 38" x 80": Often found in college dorm rooms and studio apartments
Full Mattress - 53" x 75": Often found in guest rooms.
Queen Mattress - 60" x 80": Often found in master bedrooms.
King Mattress - 76" x 80": Often found in extra large master bedrooms.
California King Mattress - 72" x 84": Often found in extra large master bedrooms, perfect for gathering the family.
Settling for an OK mattress? Dream bigger.
If you’ve never flopped down, and drifted off on a Casper California King, it’s almost impossible to imagine this kind of regal comfort.
The Cal King size bed is a glorious 72 inches wide and 84 inches long, making it perfect for anyone who needs more sleeping space.
Precision engineered for astonishing comfort.
With multiple layers of breathable, feathery-soft memory foam, our king mattresses deliver cooling, weightless sleep. Our Zoned Support design cradles you weightlessly, for night after night of cloud-like slumber.
Who Should Get a California King Size Bed?
Quality-built for years of dreaming.
Our standard Cal King size mattresses are designed in the USA using premium materials, certified safe for your family and the environment. Oh, and they come with a 10-year limited warranty.²
Sprawl out & move around all you like
Casper mattresses will isolate your movement - thanks to proprietary foam technology. Although, narrower than a King, you'll still have enough room to not bother the person you're sleeping with.
California King Size Hybrid Mattresses
Delve into unmatched luxury with our California king hybrid mattresses. Seamlessly integrating the responsive dynamics of coil springs with the lavish embrace of memory foam, these hybrid mattresses are designed to adjust to your shape while imparting gentle support. Thoughtfully crafted, they foster great airflow, promising a fresh and cool night's slumber. Scroll below and immerse yourself in a refined combination of snugness, structural support, and temperature-regulating technology, all customized to enrich your nocturnal haven.
Which Casper California King Hybrid Mattress is right for you?
There are four versions to choose from if you're looking for a California King. Our hybrid collection combines the pressure relief of our original foam with the added lift from resilient springs.
Dream Max
Our ultimate hybrid mattress with precision-cut foam and encased coils. Engineered with a gooey yet supportive medium-soft feel perfect for any sleep style—especially side sleepers.
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Snow Max
Our ultimate cooling hybrid mattress. Engineered with precision-cut foam and encased coils for a breathable and supportive medium-soft feel and Snow Technology for 12+ hours of cooler sleep.
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Dream
Combines the best of both worlds with resilient springs as the base for added lift and our proprietary foam for pressure relief. The "just right" feel is now even better.
Shop Dream
Snow
Our signature cooling hybrid mattress. Designed with soothing foam and encased coils for a supportive, medium feel plus Snow Technology for 12+ hours of cooler sleep.
Shop SnowCalifornia King Size Memory Foam Mattresses
Venture into a tranquil sanctuary with our California king size memory foam mattresses. Skillfully designed with state-of-the-art memory foam, these mattresses offer a gateway to a dimension where the curves of your anatomy are delicately embraced, dissolving daily stresses during your sleep. Each memory foam mattress offers a sleep-conducive environment, achieving a harmonious equilibrium between enveloping softness and refreshing ventilation. Continue below to discover the embodiment of restful opulence.
Which Cal King Size Memory Foam mattress is right for you?
If you're looking for an all foam mattress that doesn't sacrifice comfort, there’s a Casper California king size mattress for you.
The One
The One was engineered using feedback and data from customers like you. If sleeping on a cloud sounds good, consider this your sweet spot.
Shop The OneMemory Foam vs. Hybrid California King Size Mattresses
Memory foam Cal king size mattresses are known for their exceptional body contouring and motion isolation, ensuring every sleeper feels cradled throughout the night. They offer a personalized sleep experience by molding precisely to your body, optimizing pressure relief.
Hybrid mattresses elevate the game by blending the unmatched comfort of memory foam with the robust resilience of springs. This combination results in a mattress that not only provides the coziness of memory foam but also ensures enhanced airflow, superior edge support, and a slightly buoyant feel.
Interested in learning more? Read through our comprehensive memory foam vs. hybrid mattresses guide.
The main difference between a king and a California king is the mattress size. A standard king mattress is 76" x 80", while a california king mattress is 72" x 84". If you’re deciding between the two, we recommend taking measurements to ensure the Cal king will fit, allowing enough space for the bed frame which can add inches to the perimeter of the mattress depending on the design.
A California king bed is 72 inches wide and 84 inches long—the longest standard mattress size available.
The extra length makes California king beds perfect for taller sleepers, couples with pets or kids, or large bedrooms. As long as your bedroom is at least 12 x 12 feet, you can accommodate a California king
While a California king is longer, it actually takes up less total space than a king mattress, but only by a few square inches. Typically, a king-sized mattress is 76 inches wide and 80 inches long. Compared to the California king size —72 x 84 inches—a king adds 4 inches in width but loses 4 in length.
Both sizes provide a luxurious amount of room for couples and solo sleepers alike. The difference in length vs. width comes down to individual preferences and sleeping configurations. The size difference does not have a large effect on the layout of other bedroom furniture. A standard king-sized bed may fit those who need that extra wiggle room from side to side for pets, children, or simple comfort. Meanwhile, a California king bed frame better fits tall sleepers or lengthier rooms.
An Alaskan king bed is typically 108 x 108 inches, a perfect square and the largest bed size on the market. Compared to a California king bed—72 x 84 inches—the Alaskan king is 36 inches wider and 22 inches longer.
Due to its very large size, most homes can’t accommodate an Alaskan king bed—your bedroom would need to measure at least 16 x 16 feet. And because an Alaskan king is square-shaped, it also makes for an unusual interior design feature. For most homes, a California king mattress is plenty large enough.
An Alaskan king bed is typically 108 x 108 inches, a perfect square and the largest bed size on the market. Compared to a California king bed—72 x 84 inches—the Alaskan king is 36 inches wider and 22 inches longer.
Due to its very large size, most homes can’t accommodate an Alaskan king bed—your bedroom would need to measure at least 16 x 16 feet. And because an Alaskan king is square-shaped, it also makes for an unusual interior design feature. For most homes, a California king mattress is plenty large enough.
How Casper keeps prices low and quality high
When Casper was founded in 2014, many people were skeptical. Would consumers really buy a standard king size mattress without testing it first? Several years and numerous awards later, we have an answer: It turns out no one likes visiting stuffy mattress showrooms to make high-stakes purchases under the scrutiny of needy salespeople. (Who knew??)
Everyone loves the ease and convenience of buying online from a trusted source, and having a high-quality mattress shipped in a box to their doorstep. And people keep spreading the word that our mattresses deliver unparalleled comfort and support, top-notch construction quality, and high-tech, innovative design.
But the Casper experience isn’t just about quality, trust, and transparency. Our mattresses are a mere fraction of other brands’ prices. That’s because we’ve flipped the mattress industry on its head. By eliminating showrooms and middlemen, we keep our costs low - and pass those savings on directly to you.
