1
Vispring Diamond Majesty
9.8InnerspringMedium Soft
Key strength: Three layers of hand-nested springs under cashmere, silk, and Shetland wool — Vispring's no-compromise flagship
$44,000
Updated May 2026
Best California King Mattresses
A California king trades width for length: 72 by 84 inches, against a standard king's 76 by 80. It is the only mainstream size that gives you 84 inches of length, which is the entire reason to buy one.
If nobody in the bed is over about 6'2", a standard king is the better purchase — more shoulder room per person, cheaper and far easier bedding, and better resale on the frame.
- Dimensions
- 72" × 84" (183 × 213 cm)
- Surface area
- 42 sq ft
- Minimum room
- 12' × 12'
- Sleeps
- Two adults, one of whom is tall
Our Quick Picks
Our California King Mattresses Picks
2
Hästens 2000T
9.7InnerspringMedium
Key strength: The hand-built Swedish horsehair bed that most people are comparing every other luxury mattress to
$36,000
3
DreamCloud Premier
9.6HybridMedium
Key strength: Luxury hybrid comfort at a fraction of the price
$899$1,499
4
SFERRA Sonno Notte Luxury Firm
9.4InnerspringMedium Firm
Key strength: Ultra-luxury Italian craftsmanship meets American engineering
$5,462
5
6
Saatva Classic
9.2HybridMedium
Key strength: Handcrafted luxury with eco-friendly materials
$1,295$1,995
7
8
Hästens Superia
9.4InnerspringMedium
Key strength: The entry point into Hästens craftsmanship — same horsehair construction at a third of the 2000T's price
$12,500
Prices shown are queen list prices from our testing database so models stay comparable. Confirm the price for this size on the brand's site before ordering — size premiums vary widely by brand.
What Changes at This Size
Four extra inches of length
The only size that reaches 84 inches. For sleepers around 6'3" and up, that is the difference between feet on the mattress and feet over the edge.
Buy for height, not for areaFour fewer inches of width
Each partner gets 36 inches instead of 38. Couples who value shoulder room over length are better served by a standard king.
Standard king is wider per personBedding is scarcer and pricier
Cal king sheets, duvets, protectors and mattress pads are a special order in many shops, and they cost more than the equivalent king items.
Budget extra for every bedding layerCalifornia king vs. standard king
The names mislead: a Cal king is not bigger than a king. It is 42 square feet against the king's 42.2 — effectively identical area, redistributed.
Choose Cal king for height, for a long narrow bedroom where the extra width would block a walkway, or if you already own a Cal king frame. Choose standard king for everything else.
- California king — 72" × 84". 36" per person. Best for sleepers over 6'2".
- Standard king — 76" × 80". 38" per person. Better for broad-shouldered couples and shared beds with kids or pets.
- Split California king — two 36" × 84" halves. Enables independent adjustable base positions and separate firmness.
Room, frame and support
Plan on roughly 12 by 12 feet minimum, and note that the extra length means an extra four inches of walkway lost at the foot of the bed — the reason Cal king suits long, narrow rooms and struggles in square ones.
Center support is mandatory, as with any king. The frame needs a center rail with two or three legs reaching the floor; without it, the middle of the bed sags and most warranties treat the resulting dip as an installation failure rather than a defect.
Buying and delivery
Cal king foundations always split into two pieces, which makes them easier to get upstairs than a one-piece queen. The mattress itself is the awkward part: a compressed bed-in-a-box handles stairs easily, while a traditional two-sided innerspring in this size is a genuine logistics problem in an older home.
Confirm before ordering that the model you want is actually offered in Cal king. Several bed-in-a-box brands skip the size entirely, and some offer it at a longer lead time than their other sizes.
Frequently Asked Questions
What are California king mattress dimensions?
A California king is 72 inches wide by 84 inches long (183 × 213 cm), which is 42 square feet — four inches narrower and four inches longer than a standard king.
Is a California king bigger than a king?
No. The two sizes have almost exactly the same surface area; the Cal king simply redistributes it toward length. A standard king gives each sleeper two more inches of width.
Who should buy a California king?
Sleepers taller than about 6'2", and anyone with a long, narrow bedroom where four fewer inches of width preserves a walkway. Everyone else gets more usable space from a standard king.
Is California king bedding hard to find?
It is less widely stocked and typically more expensive than king bedding, especially for fitted sheets and mattress protectors. Factor that into the purchase, since you will replace bedding several times over the mattress's life.
What room size do you need for a Cal king?
About 12' × 12' as a minimum for clearance on three sides. Because the extra length eats walkway at the foot of the bed, a long rectangular room suits a Cal king better than a square one of the same area.
Related Resources
Best Mattress Lists
Guides & Tools
Current Sales & Deals
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