King mattress size
Sealy MATTRESS range
Available in King size
At Sealy, we offer a King size in every model and price range, tailored to your needs and lifestyle. We also have a range of bed bases designed to complement your mattress or form a King ensemble.
Australian King size mattress
The King size mattress is the second largest in the Sealy range. Measuring 183.5cm wide and 203cm long, this is one of the most popular bed sizes in Australia.
Due to its width and additional space, a King size bed is large enough to accommodate a couple with plenty of room to stretch out, or a growing family. Similar sizes include the narrower Queen mattress, or the wider Super King size.
SEALY PosturePEDIC
Why choose a King size?
A King bed is a premium size, ideal for couples and families alike. This is one of the larger mattress sizes available, offering a premium Sealy Posturepedic sleeping experience.
While it is the same length as a Queen, the King size mattress delivers an extra 30cm in width. This extra room minimises partner disturbance and offers plenty of room to stretch out or find comfort if children or animals jump into the bed.
This mattress size is ideal for larger bedrooms where a Super King is not ideal, and the space offered by a Queen is insufficient. The King bed mattress is a popular choice for guest suites and luxury hotels.
Sealy MATTRESS range
Australian mattress sizes comparison guide
We’ve created this bed and mattress size guide to help you find the perfect mattress size for your bedroom. See how the King sizes fit you, your room and your needs.
| AU Mattress Size | Width x length (MM) * |
Width x length (CM) * |
Width x length (Inches) * |
|---|---|---|---|
| Single | 915 x 1900mm | 91.5 x 190cm | 36 x 74.8" |
| Single XL | 915 x 2030mm | 91.5 x 203cm | 36 x 80" |
| King Single | 1055 x 2030mm | 105.5 x 203cm | 41.9 x 80" |
| Double | 1385 x 1900mm | 138.5 x 190cm | 54.5 x 74.8" |
| Queen | 1525 x 2030mm | 152.5 x 203cm | 60 x 80" |
| King | 1835 x 2030mm | 183.5 x 203cm | 72.2 x 80" |
| Super King | 2030 x 2030mm | 203 x 203cm | 80 x 80" |
*Due to the handmade nature of our products, there may be +/- 15mm difference in the final product from the size guide.
Sealy base range
The perfect partner for your mattress
Sealy mattresses are designed with a matching bed base in mind. Choose from a standard ensemble bed base, adjustable base or drawer storage option. Equipped with the latest technology, our bases deliver high performance and long lasting quality.
Designer base
Combine your mattress with a matching Sealy base that is designed to add support and longer lasting comfort.
Posturepedic SpaceSaver™
A convenient and modern storage solution underpinned by quality and durability.
Posturematic® Adjustable
A functional solution for modern bedrooms. Experience comfort at a new angle.
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
What is the size of a king size mattress?
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 size is a king size bed Australia?
In Australia, a King size mattress is 203cm long and 183.5cm wide. This is equivalent to 72.2 x 80 inches.
Are all king size beds the same size?
In Australia, there is the standard King size bed and a Super King. While they are the same length, the Super King size is wider than a standard King by an additional 19.5 cm.
What is the best King mattress in Australia?
There is no King size mattress that suits every Australian, because we all have different sleep requirements. Sealy Posturepedic offers various comfort and support options for sleepers of all ages. With world-leading research and accredited product testing, Sealy continues to be Australia’s #1 selling mattress.
What is the most common bed size in Australia?
In Australia, the most common bed sizes are Queen and King mattresses. With enough room, you may wish to consider the wider Super King mattress for added space, comfort and luxury.
