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King Size Mattresses
Elevate your sleep experience with the expansive comfort of a king mattress. Offering plenty of room to stretch out, it’s ideal for couples seeking extra space or solo sleepers who enjoy a luxurious, roomy retreat.
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Sleep like a King
At Forty Winks, we bring you the best in king mattresses, with options to suit every sleep style and budget. Whether you prefer the soft embrace of plush comfort or the sturdy support of a firmer feel, your perfect mattress is just waiting to be discovered.
The Basics: King Mattress Dimensions
A king mattress measures 183cm wide by 203cm long (1830 x 2030 mm), giving it a generous king mattress length—that’s plenty of space to sleep comfortably without feeling crowded, whether you’re sharing or enjoying it solo.
Before making the leap, ensure your bedroom is at least 12m² to accommodate the generous size of a king bed. If you're unsure, our bed size guide is here to help with everything you need to know about dimensions and fit of king mattress sizes.
Is a King Mattress Right for You?
A king mattress isn’t just about size—it’s about creating a personal haven. Whether you’re sprawling out alone, snuggling with a partner, or inviting the kids (or pets!) in for cosy mornings, this mattress offers unmatched versatility and comfort.
Couples will love the freedom to move without disturbing each other, while solo sleepers can indulge in all the room they desire. Pair your mattress with a quality king bed base or king bed frame to make it a stunning centrepiece for your bedroom. And don’t forget to add a king mattress protector to keep it in top condition for years to come!
Comfort Fit For a King
Healthy sleep starts with sleeping comfortably. Do you prefer a plush mattress or something firmer? Whatever your preference, we’ve got a wide range of options:
Ultra Plush: Cloud-like softness for a dreamy sleep.
Plush: Cushioned comfort that hugs you gently.
Medium: A balanced feel—soft yet supportive.
Firm: Solid support for a grounded, no-sink feel.
Ultra Firm: The densest option for ultimate stability.
Not sure what’s right for you? Visit your nearest Forty Winks store to try them for yourself.
Discover King Mattress Brands
At Forty Winks, we stock some of the best king mattress brands to ensure you sleep soundly every night:
Explore our full range online or in-store to find your perfect match.
Choosing the right mattress with bedMATCH
Finding the right comfort and support has never been so simple—or so smart. Our innovative bedMATCH technology takes the guesswork out of choosing a mattress by using science to uncover your perfect fit. Here's how it works:
Step into any Forty Winks store, where one of our friendly Sleep Specialists will be ready to help.
Fill out a quick questionnaire about your height, weight, sleep preferences, and any areas of discomfort.
Lie back and relax as the smart bed does its thing, running over 1,000 scientific calculations based on 18 key body measurements to analyse your unique needs.
Receive a personalised list of mattress recommendations tailored to your unique sleep profile. Our Sleep Specialists will guide you through the options so you can choose your dream bed.
Our Sleep Specialists are dedicated to helping you find the bed that best suits your needs so you can enjoy a good night's sleep.
What to Do with Your Old Mattress?
Upgrading to a king mattress? Don’t let your old one go to waste! Through our partnerships with mattress recycling programs across Australia, your trusty old bed could be transformed into something brand-new. Together, we can help the planet—one cosy sleep at a time.
Quick Ship King Mattresses: Better Sleep, Sooner
Can’t wait for better sleep? Our Quick Ship mattress delivery service offers next-business-day delivery in select metro areas. Explore our in-stock king mattresses and start sleeping better sooner.
FAQs
What is the difference between a king and queen size mattress? The key difference lies in width: a king mattress is 183cm wide, while a queen mattress is 153cm wide. Both sizes share the same 203cm length, but the king offers 30cm of extra space—perfect for couples or those who enjoy a little more room to relax.
What is the difference between a king and a super king mattress? A super king mattress takes luxury to the next level with its expansive dimensions of 203cm by 203cm. It’s ideal for those who want maximum sleeping space or are furnishing a large bedroom.
What is the difference between a king and a king single mattress? While a king mattress provides a spacious 183cm width, a king single mattress is 107cm wide by 203cm long. The king single is a great choice for solo sleepers or smaller rooms without compromising on length.
At Forty Winks, we’re dedicated to helping you get the best night sleep. Visit us in-store or shop online to transform your sleep experience today.
