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Feeling cramped in your current bed? If you need more room to spread out, upgrading to a California king mattress could be the key to a better night’s sleep.

There are a few reasons to consider a California king, including your height, sleep preferences, and even bedroom size. But there’s more to mattresses than size alone, and it’s important to research your options.

To help you get started, we found eight of the best California king mattresses.

We compiled our list of the best California king mattresses based on the following:

  • Materials. We looked for and included California king mattresses with high-quality foam and hybrid materials.
  • Sleep preferences and habits. Everyone sleeps differently, so we looked for mattresses that would accommodate different sleep positions, preferences, and habits.
  • Company policies. The best way to test a mattress is to sleep on it, so we chose mattresses with generous trial periods and free or reasonable returns. Also, every mattress on our list is backed with a clear warranty you can easily find on its website.
  • Company reputation and transparency. With so many mattress brands out there, we took extra care to only recommend brands with good reputations and transparent business practices.
  • Customer reviews. We carefully reviewed customer reviews and feedback to make sure we recommended the most loved mattresses on the market.

Pricing guide

  • $ = under $1,000
  • $$ = $1,000–$2,000
  • $$$ = over $2,000

Best overall California king mattress

Saatva Classic Mattress

  • Price: $$
  • Type: Hybrid
  • Height: 11.5 to 14.5 inches

The award-winning Saatva Classic is a luxury hybrid innerspring mattress. It’s designed to reduce back and joint pain with a top layer of cushioning comfort, while the individually wrapped coils at its core help support proper spinal alignment. Plus, you can choose between three firmness options at no extra cost.

The Saatva classic routinely earns high praise from reviewers, and it’s made in the United States. As a true hybrid, it may not be the best option if you prefer a memory foam mattress. But with a 180-night home trial, you can test that out for yourself.

Buy the Saatva Classic mattress online.

Best memory foam California king mattress

Casper Original Mattress

  • Price: $$
  • Type: Foam
  • Height: 11 inches

Designed for any sleep position and people who tend to sleep hot, Casper’s Original Mattress has a simple, effective construction. It has three separate layers of foam: The first is perforated for extra breathability, the second has three firmness zones to support spinal alignment, and the third prevents that sinking-in feeling typical of memory foam mattresses.

Casper is one of the most well-known beds-in-a-box, and reviewers are huge fans of the convenience and comfort that comes with choosing a Casper.

Buy the Casper Original Mattress online.

Best California king mattress for side sleepers

The Nectar Memory Foam Mattress

  • Price: $
  • Type: Foam
  • Height: 11 inches

Nectar’s all-foam mattress is made with multiple layers of foam. The layer of gel memory foam helps keep you cool, while the adaptive foam layer provides a little bounce to prevent the feeling of sinking into your mattress. The combo can help relieve pressure points in the shoulders, hips, and legs, which makes this a great choice for side sleepers.

Reviewers likened the Nectar mattress to sleeping on air and reported less joint and back pain. Nectar also offers a risk-free, 365-night trial, which is the longest guarantee in the industry.

Buy the Nectar Memory Foam Mattress online.

Best California king mattress for couples

The DreamCloud – Luxury Hybrid Mattress

  • Price: $$
  • Type: Hybrid
  • Height: 14 inches

With a blend of gel memory foam and individually wrapped coils, the DreamCloud luxury hybrid mattress is designed to adapt to your body’s shape. That makes it a good option if you share your bed with a partner, a child, or even a pet.

The DreamCloud also has minimal motion transfer, so you can sleep undisturbed. Plus, the mattress strikes a great balance between firm and soft, so it’s a good option if you and your partner need to compromise on mattress firmness.

Buy the DreamCloud Luxury Hybrid Mattress online.

Most comfortable California king mattress

The WinkBed

  • Price: $$
  • Type: Foam
  • Height: 13.5 inches

The WinkBed is a hybrid design featuring a Euro pillow top infused with gel. It gives the mattress a luxurious, pillowy feel, without sacrificing support. It also has individually wrapped coils that provide targeted support and helps protect against mattress sagging. The mattress is offered in four firmness levels at no additional cost.

Reviewers say this mattress is an incredibly comfy and high-quality option that’s been a game changer for their sleep. WinkBeds also makes it easy to exchange your mattress if you’re not loving the firmness you originally chose.

Buy The WinkBed online.

Best value California king mattress

T&N Original Mattress

  • Price: $
  • Type: Foam
  • Height: 10 inches

The Original Mattress by Tuft & Needle is made with two layers of a proprietary foam designed for both pressure relief and support, no matter your preferred sleep position. The foam also has cooling gel beads and heat-absorbing graphite to pull away body heat, so you can sleep comfortably all night.

Many online reviews about the T&N Original touched on the great price point and comfortable support. It’s also a cheaper option than many because of its all-foam construction.

Buy the T&N Original Mattress online.

Best split California king mattress

TEMPUR-ProAdapt

  • Price: $$$
  • Type: Foam
  • Height: 12 inches

This split California king mattress is designed for ultimate personalization. Not only can you buy an adjustable base that allows you to control your side of the bed separately, but you can also customize your firmness levels. To take advantage of the firmness feature, though, you’ll need to contact one of their customer service representatives so you can buy two separate twin XL mattresses.

The TEMPUR-ProAdapt mattress is made with the brand’s proprietary foam that was originally developed by NASA and adapted for sleep. It comes in multiple firmness options, making it a great choice for couples looking to customize their sides of the mattress.

Buy the TEMPUR-ProAdapt online.

Best California king mattress for back pain

Avocado Green Mattress

  • Price: $$
  • Type: Hybrid
  • Height: 11 to 13 inches

Organic from top to bottom, the Avocado Green Mattress is as natural as it gets. Certified organic natural latex, wool, and cotton add a luxurious feel, while a specially designed, zoned support system offers added back support and relief from pressure point pain.

The mattress has more than 1,000 individually wrapped steel coils, which means better weight distribution, reduced motion transfer, improved spinal alignment, and contouring to your natural curves. Reviewers can’t get enough of this mattress’s comfort and Avocado’s commitment to healthier sleep.

Buy the Avocado Green Mattress online.

Once you’ve decided that a California king suits your needs, there are a few other considerations.

While there’s no single best mattress for everyone, it’s important to choose one that suits your individual body type and sleep preferences. Consider:

  • Mattress type. California king mattresses can be found in foam, innerspring, and hybrid options. Personal preference will play a big role in what ultimately feels best to you. If you’re unsure what you like best, a hybrid can be a good place to start because it has elements from foam and innerspring mattresses.
  • Mattress performance. It’s also important to consider how mattresses perform when it comes to firmness, motion isolation, temperature regulation, edge support, and off-gassing. Think about what matters most to you, and look for mattresses with positive reviews for those attributes.
  • Mattress materials. Also pay attention to the materials used in a mattress. Look for high-quality materials like CertiPUR-US and certifications like GOTS or GOLS, which mean the company has met stringent standards for quality. The better the materials used, the more durable your mattress will be and the longer it will last.
  • Trial period and warranty. It can be challenging to find the right mattress based on online descriptions alone — and lying on a bed for half an hour in a store isn’t necessarily a good indication of how it will perform over time either. Your best bet is to find a mattress that offers an in-home trial period of at least 30 days. It’s also a good idea to check the fine print so you understand the process for returns or exchanges.

Because it’s 4 inches longer than a standard king, a California king mattress is a good choice if you’re tall. Those extra inches will give you room to stretch out without your feet hanging off the bed.

California king mattresses are also convenient if you have pets who sleep near the foot of the bed. Plus, the narrower footprint may be a better fit in some bedroom layouts.

Both the California and standard king mattresses are big beds, but the narrower width of the California king can be a good option if you like to sleep a little closer to your partner.

Keep in mind that both the mattress itself and accessories like sheet sets tend to cost more.

California king mattresses shouldn’t be confused with standard king-size mattresses.

At 72 inches wide and 84 inches long, a California king measures 4 more inches from top to bottom and 4 inches less from side to side.

Because the California king is both longer and narrower than a standard king, you’ll need a new frame and bedding if you’re planning to switch.

The split California king mattress is exactly as it sounds: It’s essentially two separate mattresses that equal the same dimensions as a single California king.

The split California king can be a good option if you share your bed with a partner and have different firmness or temperature preferences, or if one of you is a restless sleeper.

If you upgrade to an adjustable base, you can further personalize your sleep experience without disturbing your partner. However, if you tend to roll toward the middle of the bed, you may find the split California king uncomfortable.

A California king mattress can be a great choice if sleeping space is an issue. While you’ll spend more for the mattress itself, you can find a California king to suit just about any sleep position, habit, or preference.


Jessica Timmons has been working as a freelance writer since 2007, covering everything from pregnancy and parenting to cannabis, chiropractic, stand-up paddling, fitness, martial arts, home decor, and much more. Her work has appeared in mindbodygreen, Pregnancy & Newborn, Modern Parents Messy Kids, and Coffee + Crumbs. See what she’s up to now at jessicatimmons.com.