King Size Mattresses

1,625 Results

Beautyrest Black Hybrid LX-Class Firm  King Mattress & Box Spring Set
Beautyrest Black Hybrid LX-Class Firm  King Mattress & Box Spring Set
Beautyrest Black Hybrid CX-Class Medium  King Mattress & Box Spring Set
Beautyrest Black Hybrid CX-Class Medium  King Mattress & Box Spring Set
Therapedic Essence King Mattress with Head Up Only Base
Therapedic Essence King Mattress with Head Up Only Base
Tempur-Pedic TEMPUR-Luxe Adapt Firm King Mattress & Box Spring Set
Tempur-Pedic TEMPUR-Luxe Adapt Firm King Mattress & Box Spring Set
Tempur-Pedic TEMPUR-ProAdapt Soft King Mattress & Box Spring Set
Tempur-Pedic TEMPUR-ProAdapt Soft King Mattress & Box Spring Set
Premium Plus Smart Base - King
Premium Plus Smart Base - King
$2,295.00$2,595.00
One Size Option
Location unknown
Sealy Posturepedic Lavina II Ultra Firm King Mattress & Box Spring Set
Sealy Posturepedic Lavina II Ultra Firm King Mattress & Box Spring Set
Tempur-Pedic TEMPUR-Adapt Medium Split King Mattress & Box Spring Set
Tempur-Pedic TEMPUR-Adapt Medium Split King Mattress & Box Spring Set
Shifman Willow Collection King Mattress Set, 8" Profile Box Spring
Shifman Willow Collection King Mattress Set, 8" Profile Box Spring
Casper Onyx Split King Mattress with Head Up Only Base
Casper Onyx Split King Mattress with Head Up Only Base
SFERRA Vicari King Mattress & 9" Box Spring Set - 100% Exclusive
SFERRA Vicari King Mattress & 9" Box Spring Set - 100% Exclusive
Sealy Posturepedic Garner II Firm King Mattress & Box Spring Set
Sealy Posturepedic Garner II Firm King Mattress & Box Spring Set
Beautyrest Black Hybrid BX Class Plush King Mattress & Box Spring Set
Beautyrest Black Hybrid BX Class Plush King Mattress & Box Spring Set
Therapedic Topaz King Mattress with Head Up Only Base
Therapedic Topaz King Mattress with Head Up Only Base
Beautyrest Black Hybrid BX Class Plush King Mattress & Box Spring Set
Beautyrest Black Hybrid BX Class Plush King Mattress & Box Spring Set
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Your sleeping surface must provide the comfort and support needed to get the hours of sleep you need. Still, with so many types of beds and mattresses, it can be a difficult decision to choose one. It would be best if you made an informed decision about what bed to choose based on your room, specifically the free space for the bed and the features you need your mattress to have.

King mattresses are ideal for master bedrooms, as they offer plenty of space. Our retailers provide various king bed frames and headboards, or if you already have the base, look through the collection of king size mattresses to find the type and firmness level you prefer.

How big are king size mattresses?

Standard king bed mattresses are one of the widest mattresses available, measuring at a whopping 76″ in width, whereas in length, you have typically have 80″. The mattress typically provides enough room for two adults to stretch out in luxurious comfort, with the space to occasionally have their pet or child sleep in the bed too.

If you are over six feet tall, you might want to consider the California King mattress that has 4″ less in width but more in length than the standard version. So, such a mattress measuring 72″ wide and 86″ long will need a bed frame that is slightly longer. In some cases, because of the frame's construction, a king size bed might also require a so-called split king mattress which is essentially two twin mattresses pushed together.

King mattresses types

The four most common king size mattress types are innerspring, foam, hybrid, and air mattresses. Each type suits different sleepers as they seek a particular feature from bouncy surface to contouring properties and huggy feel.

Innerspring mattresses are constructed from a layer of steel coils surrounded by fiber padding, typically wool, cotton, or foam. The coil's number, thickness, and placement can affect the feel of the mattress. On the contrary, foam mattresses typically made of polyurethane foam, including latex and memory foam, provide a highly cushioned experience. King size memory foam mattresses, in particular, are "curve-forming" as they soften with body heat and pressure, thus, being ideal for all sleeping positions.

Suppose you want something in the middle of the two previously mentioned types. In that case, a hybrid mattress combines features from a foam mattress and box spring types as it typically contains a coil support system but with a significantly thicker comfort layer. Whereas, if you want something completely different, try a king air mattress made from an inflatable layer topped with foam.

F.A.Q.

Is a King bed smaller than a California King?

A King bed is 76 inches wide by 80 inches long, while a California King bed is 72 inches wide by 84 inches long. 


This means the King bed yields a wider sleeping area, while the California King bed offers additional length. Although the California King bed is not smaller in square footage, its narrower width and increased length cater to specific spatial and comfort needs. This makes it an excellent choice for taller individuals or for rooms that are longer than they are wide. 

How does a King-size bed compare to a queen-size bed in terms of space and comfort?

A standard king-size bed measures 76 inches wide by 80 inches long, offering luxurious space that comfortably accommodates more than one individual. Its generous dimensions make it a premier choice for those seeking a roomy, restful night's sleep


On the other hand, a queen-size bed at 60 inches wide by 80 inches long provides a cozy sleeping area for couples or ample room for individuals who prefer extra room to stretch out. The choice between the two sizes should reflect your sleeping style and bedroom size.

What are the exact dimensions of a king-size bed?

A king-size bed is 76 inches wide and 80 inches long, which is perfect if you're looking for extra space to stretch out without bumping into your partner all night. It's great for bigger bedrooms and offers plenty of room for you, your pillows, your kids, and the family pet. 


A good rule of thumb is to make sure your room is at least 12 by 12 feet to fit the bed comfortably, along with your other bedroom furniture