Australia's trusted guide to the best king single mattresses in 2026. Compare top brands, take our quiz, and sleep better tonight.
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Everything you need to know before buying
A king single mattress measures 107cm x 203cm (42" x 80"), making it 16cm wider than a standard single. Perfect for growing teens or adults who want extra sleeping space.
Soft: Best for side sleepers
Medium: Suits most sleep positions
Firm: Ideal for back/stomach sleepers
Memory Foam: Pressure relief & contouring
Hybrid: Support + comfort
Innerspring: Bouncy & breathable
Latex: Natural & durable
Quality king single mattresses range from $300-$2000. Consider your sleep needs, trial periods, and warranty length. A good mattress is an investment in your health.
Welcome to Australia's most comprehensive resource for king single mattresses in 2026. Whether you're shopping for a growing teenager, outfitting a guest bedroom, or simply seeking more sleeping space than a standard single provides, our expert team has researched and reviewed the best king single mattresses available in the Australian market to help you make an informed decision.
A king single mattress measures 107cm wide by 203cm long (approximately 42 inches by 80 inches), making it the ideal choice for those who need more room than a standard single (92cm x 187cm) but don't have space for a double bed. The extra 15cm in width and 16cm in length provides significantly more sleeping area, perfect for taller individuals, restless sleepers, or anyone who appreciates extra personal space during sleep.
King single mattresses have become increasingly popular across Australia for several compelling reasons. For teenagers transitioning from children's beds, the king single offers room to grow without the commitment of a larger bed that might overwhelm a bedroom. For adults in apartments or smaller living spaces, it provides a comfortable solo sleeping solution. Guest rooms benefit from king singles as they accommodate visitors of various sizes while maintaining a tidy room aesthetic.
The Australian mattress market offers diverse options to suit every sleeper. Memory foam mattresses excel at pressure relief and motion isolation, making them excellent for those with joint pain or partners with different sleep schedules. Hybrid mattresses combine the support of innerspring coils with the comfort of foam layers, offering the best of both worlds. Innerspring mattresses remain popular for their traditional feel, excellent breathability, and responsive support. Latex mattresses provide a natural, hypoallergenic option with exceptional durability and consistent support.
Selecting the appropriate firmness level is crucial for sleep quality. Side sleepers typically benefit from soft to medium firmness that allows shoulders and hips to sink in while maintaining spinal alignment. Back sleepers generally prefer medium to medium-firm options that support the natural curve of the spine. Stomach sleepers often need firmer mattresses to prevent the pelvis from sinking too deeply. Our interactive quiz above can help determine your ideal firmness based on your sleep position and preferences.
When purchasing a king single mattress in Australia, look for products that meet Australian safety standards and carry certifications such as CertiPUR-US for foam quality, GOLS for organic latex, or OEKO-TEX for textile safety. These certifications ensure your mattress is free from harmful chemicals and manufactured to high-quality standards. Many Australian brands also offer trial periods ranging from 100 to 365 nights, allowing you to test your mattress at home before committing.
To maximise your king single mattress investment, proper care is essential. Rotate your mattress every three to six months to ensure even wear. Use a quality mattress protector to guard against spills, dust mites, and allergens. Most modern mattresses should last 8-10 years with proper care, though this varies by material and usage. Regular vacuuming and spot cleaning can help maintain hygiene and extend your mattress's lifespan.
Most online mattress retailers offer free delivery across metropolitan Australia, with regional areas sometimes incurring additional charges. Bed-in-a-box mattresses arrive compressed and rolled, expanding to full size within 24-72 hours of unpacking. Traditional mattresses may require white-glove delivery services. Many retailers also offer old mattress removal for an additional fee, making the upgrade process seamless.
At KingSingleMattress.au, we're committed to helping Australians find their perfect sleep solution. Our unbiased reviews, detailed comparisons, and personalised recommendations are designed to simplify your mattress shopping experience. Browse our curated selection above, use our comparison tool to evaluate your options side by side, or take our quick quiz to receive tailored recommendations based on your unique sleep needs.