Skip to Main Content
Your Closest Ashley
W Dublin Granville Rd,Columbus
None

California King Mattress

1 - 30 of 195 products

No option selected

Sort

List View Icon Grid View Icon
Mattress Quiz
find your dream match
Mattress Quiz

Mattresses

California King Mattress

California King Mattress FAQ

Not sure if a California king mattress is right for you? Discover its unique size longer and narrower than a standard king, making it ideal for taller individuals or couples seeking extra legroom. A California king fits best in bedrooms at least 12 feet by 12 feet, giving you space for easy movement and furniture. Ashley offers various California king mattresses, including memory foam and innerspring, to suit your comfort preferences. Whether comparing king sizes or checking frame compatibility, Ashley provides guidance and a range of options to help you choose the right mattress for your needs and space.

What is a California King Mattress?

A California king mattress size is the longest standard mattress size available. It provides an additional four inches of length compared to a standard king mattress, making it ideal for taller individuals or for bedrooms where saving on width is important.

What size is a California king mattress?

Dimensions and Comparison
California King:
  • 72 inches wide × 84 inches long
  • Total sleep area: 6,048 square inches
Standard King (Eastern King):
  • 76 inches wide × 80 inches long
  • Total sleep area: 6,080 square inches
The California king mattress dimension is four inches narrower and four inches longer than a standard king. Despite its name, the California king actually provides a slightly smaller total sleep surface.

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


Choosing between king and California king

Choose a California King if:
  • You're taller (especially over 6'2 inches) and need extra legroom
  • Your bedroom is longer than it is wide
  • You prefer extra length over width
Choose a Standard King if:
  • You need maximum width for couples
  • You regularly share your bed with children or pets
  • You want more side-to-side space

How much is a California king mattress?

California king mattress prices are determined primarily by features and materials rather than size. On Ashley, California king mattresses start at $250 and can exceed $2,500, depending on the model.

Basic all-foam or memory foam California king bed mattresses are typically available from $250 up to $1,200, offering pressure relief and straightforward shipping.

Hybrid options, which combine coils with foam or latex, generally range from $1,300 to $2,500 and offer added support along with improved temperature regulation.

Luxury mattresses featuring organic latex, smart technology, or advanced cooling designs often cost $2,500 or more.

Note: Mattress prices vary by location and store.

Do I need a box spring or foundation for a California king mattress?

No, you do not always need a box spring or foundation for a California King mattress. It depends on your bed frame type and your mattress warranty requirements.

If your bed frame is a simple metal frame with only minimal cross supports, you will need a foundation. Foundations use solid wood or metal slats, providing even, sturdy support that prevents sagging and protects your mattress warranty.

Platform beds with a solid surface or slats no more than 2.75–3 inches apart do not require a box spring or separate foundation, these provide adequate support on their own. Using a foundation with a platform bed is unnecessary and only adds extra height.

Adjustable bases serve as both frame and support, so they do not require an additional foundation.

Always check your mattress warranty details. Most warranties require strong, consistent support across the mattress.

Are California king mattresses compatible with adjustable bases?

Yes, California King mattresses are compatible with most adjustable bases. When shopping, ensure that the adjustable base is specifically designed to fit California King dimensions, which are longer and narrower than standard King sizes. Always verify manufacturer guidelines to avoid sizing or warranty issues.

Do two twin mattresses make a California king?

No, two twin mattresses do not equal a California king. Two twin xl mattresses placed side-by-side create a standard king. To create a split California king, you must purchase specific "split Cal king" mattresses.

Where can I buy a California king mattress?

You can purchase a California king mattress directly from Ashley, both online and in-store. Ashley offers a variety of California king mattresses in different comfort levels, making it easy to find the best California king mattress for your needs. You can also shop for a California king mattress topper to further customize your sleep experience. Check our flexible financing options to make your purchase more manageable.

Show more

For additional details on the offers on this page, click here to learn more.

In-store Only: No interest for 60 months
On in-store purchases made with your Ashley Advantage® Synchrony credit card. Equal monthly payments required for 60 months. Minimum purchase may be required. Down payment up to 30% may be required on another payment type for in-store purchases.

Not combinable with other offers and discounts. If any down payment is required, the qualifying purchase amount is determined prior to any down payment, taxes or delivery. Qualifying purchase amount, less any applicable down payment, must be on one receipt. No interest will be charged on amount financed and equal monthly payments are required on promo purchase until it is paid in full. The payments equal the initial amount financed, divided by the number of months in the promo period, rounded up to the next whole dollar. These payments may be higher than the payments that would be required if this purchase was a non-promo purchase. During the last month(s) of the promo period the required monthly payment may be reduced due to the prior months' rounding. Regular account terms apply to non-promo purchases. New Accounts: As of 7/31/2025 Purchase APR is 34.99%. Penalty APR is 39.99%. Minimum Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval. Excludes Samsung appliances and electronics. Discounts on Regular Price items may be available depending on the payment method or promotional financing offer you select. For more information on our Regular Price discounts or for additional promotional financing options, see a sales associate for details. 

Zero interest if paid in full within 2 years‡*
On qualifying purchases made with your Ashley Advantage® Synchrony credit card. Interest will be charged to your account from the purchase date if the promotional balance is not paid in full within 24 Months. Minimum monthly payments required. Minimum purchase of $1499 required online.

‡*Qualifying purchase amount must be on one receipt. No interest will be charged on the promo balance if you pay it off, in full, within the promo period. If you do not, interest will be charged on the promo balance from the purchase date. The required minimum monthly payments may or may not pay off the promo balance before the end of the promo period, depending on purchase amount, promo length and payment allocation. Regular account terms apply to non-promo purchases and, after promo period ends, to the promo balance. New Accounts as of 7/31/2025: Purchase APR 34.99%. Penalty APR 39.99%. Min Interest Charge $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval. Discounts on Regular Price items may be available depending on the payment method or promotional financing offer you select. For more information on our Regular Price discounts or for additional promotional financing options, see a sales associate for details.

$1 to Start‡^
‡^“$1 to start” is available for applications online and in select stores, does not include taxes, & refers to the rental period from agreement start date to 1st scheduled renewal payment. On 1st renewal date, regular rental rates, taxes & fees will apply. Rate, term and total cost vary by item selected. This is not a promotion for a specific transaction/item nor an offer for a loan, credit, or financing. See lease for payment amounts & rental terms. Offer will not reduce the number of payments, total amount to acquire ownership, or purchase option amount. Customers in California will pay a $0 initial rent payment and a $1 processing fee to start.

Email & SMS Welcome Offer: $50 off your next purchase^†
^†Use the promo code provided for $50 off your purchase of $999.99 or more at participating Ashley-branded stores or at checkout on www.ashleyfurniture.com. Previous purchases excluded. Minimum purchase amount must be met in a single transaction before taxes and delivery fees. Cannot be combined with any other offer or discount. Offer excludes clearance/closeouts, floor models, furniture protection plans, warranty, service charges, or Purple, Beautyrest Black®, Sealy Conform™, Tempur-Pedic®, Nectar, Stearns & Foster®, Serta® iComfort®, Sealy® Hybrid™, Serta® Motion Essentials® and Serta® Motion Perfect® product purchases. Offer is nontransferable and does not apply to sales tax, shipping, In-Home Delivery, or handling charges. Prices or offers may vary in Hawaii and Alaska. Ashley-branded stores may be owned and operated by Ashley Global Retail, LLC (or subsidiaries), or independent licensees. See store associate for more details. Offer expires 30 days after coupon issued online at 11:59pm EST.