King Mattresses
Sealy King mattresses
We have a King size mattress to suit you
Looking for the perfect king mattress? Experience restful nights with our premium collection of soft, medium, and firm king beds from Sealy Australia. A king mattress, measuring 183cm x 203cm, provides generous space and exceptional comfort, making it ideal for couples seeking undisturbed sleep.
Sealy King MATTRESSES
Shop by range
Each Sealy range features a unique combination of our patented technologies, comfort choice and materials that are sourced and made right here in Australia. Individual model features differ between Sealy bedding retailers.
We never compromise on sleep.
Neither should you.
State-of-the-art technology leaves you feeling refreshed
A sleep system designed to maintain your body’s natural alignment

Support that stands the test of time
Finest materials
3 stage support
2 stage support
Single stage support
We never compromise on sleep. Neither should you.
State-of-the-art technology leaves you feeling refreshed
A sleep system designed to maintain your body’s natural alignment

Support that stands the test of time

Understanding
sleeping positions
The comfort of your mattress may have a direct impact on the quality of your rest. Depending on your typical sleep position, you may be suited to softer layers rather than a firm option. Explore our options from ultra plush to ultra firm, and see how they might suit you.
Sealy KING MATTRESSES
Shop by comfort
Sealy Posturepedic mattresses have a wide variety of comfort layers and technology. Our base comfort options range from Ultra Firm to Ultra Plush to relieve pressure and cushion the body. No matter which Posturepedic model you prefer, we have a comfort level to suit you.
Soft comfort
Deeply cushioning and popular amongst side sleepers, these options often have a pillowtop
Medium comfort
Offers the best of both worlds between strong cushioning and equally strong support
Firm comfort
Firmer mattresses usually have a tight top, and are ideal for back or front sleepers
Soft comfort
Deeply cushioning and popular amongst side sleepers, these options often have a pillowtop.
Ultra plush
Plush
Medium comfort
Offers the best of both worlds between strong cushioning and equally strong support.
Medium
Firm comfort
Firmer mattresses usually have a tight top, and are ideal for back or front sleepers.
Ultra firm
Firm
Mattress selector
Not sure what mattress is right for you?
Simply answer a few questions and we’ll recommend the right mattress based on your unique sleep profile. We will email you your customised results so you can take them in-store to a Sealy retailer near you.

King mattress size FAQs
How big is a king size bed Australia?
In Australia, a King size bed is 203cm long and 183.5cm wide. The height of the mattress can vary depending on the comfort level (plush, medium, firm). If you have a bed frame, this should be taken into account when measuring required space.
What is king size in CM?
In Australia, a King size mattress is 203cm long and 183.5cm wide. This is equivalent to 72 x 80 inches.
Are there 2 sizes of king mattresses?
In Australia, there is a King Mattress and a Super King Mattress. The primary difference between the King and Super King is the extra 19.5cm in width, meaning more space and comfort to spread out.
What size bed do most couples sleep on?
In Australia, most couples choose to sleep on a Queen or King size bed. Which size is right for you depends on the size of your bedroom, how much space you and your partner prefer, and whether you will need to consider upgrading or downgrading in the future.
Is it worth upgrading from queen to king bed?
A King bed allows for additional space to stretch out and get comfortable. With more room to move, you may experience less disturbance from your partner shifting throughout the night. It is important to consider the size of your bedroom and whether a King will fit your space.
What Is the lifespan of a king mattress?
A Sealy king mattress typically lasts around 10 years. However, this is a general guideline. With appropriate care and maintenance, a quality mattress may be enjoyed for decades. As long as your mattress offers the right comfort, support and hygiene, then there is no requirement to replace it.
How much does a king size mattress weigh?
It varies between 46kg – 65kg. The exact weight of a mattress will depend on the specific range and comfort selections.
Can a King size bed fit 2 adults?
Yes, a king mattress can comfortably fit 2 adults. The king bed is a premium size, it is spacious and offers plenty of room to stretch out or find comfort even if children or pets jump into the bed.
Reviews
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