California King Size Mattresses

The Best California King Mattress On The Planet

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#1 In Customer Satisfaction With Bed in a Box Mattresses by J.D. Power Award Details

California King Purple<sup>®</sup> Mattress

California King Purple® Mattress

2" Purple Grid


California King Purple<sup>®</sup> Hybrid

California King Purple® Hybrid

2" Purple Grid


California King Purple<sup>®</sup> Hybrid Premier

California King Purple® Hybrid Premier

3" Purple Grid

4" Purple Grid



Every bed comes with

100 Night Free Trial

100-Night Trial

0% APR Financing

0% APR Financing

10 Year Warranty

10-Year Warranty

100-Night Trial

Sleep on your Purple® Mattress up to 100 nights in the comfort of your own home! If you don’t love it, we’ll pick it up and you’ll get a full refund*.
*Accrued interest and shipping fees not eligible for refund.

0% APR Financing with Affirm

Pay as you sleep. Apply for monthly payments with Affirm at checkout and pay for your mattress over 3, 6, or 12 months with as low as 0% interest OAC.

Why People Love Purple

back sleeper

Soft and supportive

The grid adapts to your unique body and sleeping position.

Cool all night

Thousands of open-air channels to keep you comfortably cool all night.

Flexible Financing

Financing options as low as 0% APR. No hidden fees or markups.

The Purple Grid: No Pressure Support

The Purple Grid™ is engineered for every body. The Purple Cal King offers no pressure support which adapts to your unique body for comfort you crave and the support you need. All at once.

Is a California King Size Mattress Right For Me?

The Cal King mattress is 4 inches longer vs the standard king and 4 inches narrower.

The Cal King size mattress is an ideal option for tall sleepers wanting an extra 4 inches of length.

As a general rule of thumb, your bedroom space should be at least 12 x 12 feet to feel balanced within the space.

What size is a California king mattress?

The size of a California king mattress is 72 X 84 inches. These measurements are standard in the mattress industry. You can expect all California king mattresses to have these dimensions. The large California king size mattress is one of the most spacious mattresses you can buy. It’s 12 inches wider than a queen size bed and 4 inches longer than both queen and king size mattresses. This makes the Cal king the longest mattress you can buy out of all standard bed sizes.

The California king mattress size is recommended for very tall sleepers who want a spacious mattress with extra leg room. If you’re of average height and want a big mattress, we’d recommend a standard king size mattress instead. The standard king is 4 inches shorter than the Cal king, but it’s also 4 inches wider.

Mattress Sizing

Crib: 28" x 52"

Full/Double: 54" x 75"

Toddler: 28" x 52"

Queen: 60" x 80"

Twin: 38" x 75"

King: 76" x 80"

Twin XL: 38" X 80"

California King: 72" x 84"

Frequently asked questions.

How much is a California king size mattress?

Purple California king mattresses range from $1399-$3499. Each Purple mattress includes free shipping and returns, a 100-night mattress trial, and a 10-year warranty. Try Purple risk-free — if you’re not satisfied, you can return it for free and receive a full refund.

Shop for a California King Size Mattress:

California King Size Purple Mattress

California King Size Purple Hybrid

California King Size Purple Hybrid Premier with 3” or 4” Purple Grid™

When you buy a Purple Cal king mattress, you’ll slumber blissfully on premium materials and enjoy excellent service at an affordable price. Only Purple Mattresses have the patented Purple Grid. The Hyper-Elastic Polymer material cradles your body for luxurious no-pressure support, regardless of your body type or sleeping position.

Where can I buy a California king size mattress?

You can buy a California king size mattress securely and conveniently right here at Purple. There’s no better way to buy a California king size bed. In just a few clicks, you can choose your Purple Mattress and have it shipped right to your door. All Purple mattresses include free shipping and returns, a 100-night zero-risk sleep trial, and a 10-year warranty. Plus, when you buy a California king size mattress from Purple, you get loads of freebies and discounts on mattress accessories. You can get a California king size mattress set with bedding, pillows, and more for at an unbeatable price.

If you’re in the mood to go shopping in person, you can also test-drive a Purple Mattress at your local mattress retailer. Purple partners with top mattress stores across the United States. Just use our store locator to find a Purple mattress near you.

What is the difference between a king size mattress and a California king?

The California king size mattress and standard king size mattress have different dimensions. It’s important to know the differences, especially when shopping for bedding or a bed frame.  Let’s take a look at the difference between king size and California king size mattress dimensions:

King size mattress: 76 X 80 inches

California king size mattress: 72 X 84 inches

The California king size mattress size is 4 inches longer than the king size. This makes it ideal for taller sleepers. It’s also 4 inches narrower than the king size. If you don’t need the extra length, then you may want to opt for a king mattress and enjoy the extra width.

Will your king sheets work on a California king size mattress?

Sometimes. If you choose the extra soft and super stretchy Purple sheets, you can use the same set for a king bed or a California king bed. Purple sheets are engineered specifically to unleash the comfort of a Purple mattress. The extra stretchy fabric and the Purple Grid™ are a match made in mattress heaven. Our sheets allow you to sink into the mattress with zero resistance so you experience the full body-cradling comfort of the Purple Grid. Purple sheets are light, airy, and silky smooth, which enhances Purple’s signature zero-gravity feel. 

We can’t say the same about other sheets. Stiff king size sheets with no stretch won’t be as versatile and may not be compatible with a California king size mattress, especially if it’s a fitted sheet. To get the most out of your mattress and ensure a good night’s sleep, it’s always best to choose stretchy sheets

Will the same pillows fit both a king and a California king bed?

Yes, you can use the same pillows for a king bed and California king bed. When you get a new mattress, pillow size is not nearly as important as the size of your bedding or bed frame. The best pillows are the ones you find most comfortable, which often depends on your sleep style. For example, a side sleeper would probably prefer a higher pillow, because their head needs to remain elevated to stay aligned with the neck and spine. A stomach sleeper or back sleeper may want a low-profile pillow to help keep their neck straight.

In terms of comfort and support, you can’t beat Purple Pillows. The original Purple Pillow is made with a Purple Grid™ core, so your head and neck get the same cool, plush, cradling support as your body does on a Purple Mattress. It’s a low-profile pillow perfect for everyone. Optional risers are available to make the pillow taller, which works great for side sleepers. 

The Purple Harmony pillow is the luxurious pillow featuring the new Purple Grid Hex combined with a Talalay latex interior. It has a plush, hypoallergenic core that won’t collapse or bunch. The Harmony pillow is available in two different heights: The standard size is 6.5” thick, while the tall size measures 7.5” thick.

Who are California king beds recommended for?

California king beds are recommended for people who are quite tall. This makes sense because the Cal king is the longest mattress you can buy. King and queen beds are 80 inches long, which is typically long enough for most people. The California king is 84 inches long, providing extra leg room for those who are 6’ 6” tall or more.

There are other reasons for choosing a California king bed size over a king size bed. Some average-sized sleepers may choose a California king because it better suits the shape of their bedroom. If your master bedroom is long and narrow, a king mattress may not leave enough room on either side of the bed. A California king may fit better, allowing you to enjoy a large bed without downsizing to a queen mattress.

If you have pets that sleep at the end of your bed, you might benefit from the extra length a California king size mattress provides. Though, we can’t promise it will stop your cat from attacking your toes at 3 am.

Does my California king mattress need a box spring?

No, you don’t need a box spring to support your California king mattress. In fact, we advise against it, especially if you have a Purple Mattress. Box springs lack durability and can be popular homes for mold, bacteria, and dust mites. The squeaky springs will also prevent you from enjoying the full benefits of the Purple Grid.

A California king size mattress gets the best support from a Purple bed frame. Not only do Purple bed frames look great, but they are designed to enhance the luxurious comfort and support of your Purple Mattress.