Find the Perfect Fit
Length, width, and height aren’t just numbers on a product tag, they can make a real difference to your sleep comfort. In Australia, mattress sizes are mostly standard across brands, but slight variations can affect how your bed feels. At Amart, our mattresses follow Australian standard dimensions, with minor differences depending on the model.
| Mattress Size | Metric | Imperial |
|---|---|---|
| Single | 92 x 188cm | 3'0 x 6'2" |
| Long Single | 92 x 203cm | 3'0" x 6'8" |
| King Single | 107 x 203cm | 3'6" x 6'8" |
| Double | 138 x 188cm | 4'6" x 6'2" |
| Queen | 153 x 203cm | 5'0" x 6'8" |
| King | 183 x 203cm | 6'0" x 6'8" |
| Super King | 203 x 203cm | 6'8" x 6'8" |
Mattress Size Comparison Table
Choosing the Right Mattress
Choosing the right mattress isn’t just about picking a number off the sales tag. Room space, body size, sleep habits, and bed features all play a role in determining how comfortable your mattress feels every night. Before we look into all the different sizes of beds, let's look at how thickness, support, and your space can significantly impact sleep quality.
And don’t forget, your mattress and pillows work together. Our Amart Pillow Bar has advice on choosing pillows that complement your mattress choice.
Thickness matters
Your mattress thickness isn’t just a number; it changes how supported and comfy you feel. Extra comfort layers, toppers, or spring variations can make it thicker or thinner. If you’re unsure, our Mattress Firmness Guide can help you compare support options.
Body size counts
- Height:Your mattress should be 10-15cm longer than the tallest sleeper.
- Weight:Choose the thickness based on the heaviest person.
For kids:
Go bigger than they need now; more room to grow means less hassle (and less spending) later.
Room-to-bed ratio:
- Designers recommend at least 60cm clearance around the bed.
- Short on space? Consider storage-smart beds like the Sorvino, giving you more bed space without cramping your room.
Browse our full range of mattresses to find the perfect size and style for your bedroom, or visit the Amart Sleep Zone to physically experience comfort and build quality.
Single Mattress (92 cm x 188 cm)
Did you know over 200,000 Aussie couples sleep in separate beds? Single mattresses make it easy push them together or pull them apart. Whether it’s space, snoring, or shift work, they’re the ultimate flexible, multi-function size for any setup.
King Single Mattress (107 cm x 203 cm)
If you’re after a little extra space, the King Single is your answer. It offers all the benefits of a Single but with more wiggle room especially in length, matching the head-to-toe size of a Queen mattress.
Long Single Mattress (92 cm x 203 cm)
Need extra length on your Single mattress? Amart’s Long Single is ideal for taller sleepers or compact rooms. Place two side by side to create a Split King perfect for versatility in bedrooms, guest spaces, or Airbnb accommodation.
Double Mattress (138 cm x 188 cm)
Ready to level up? A Double mattress is ideal for growing teens, first homes, or pet snuggles. Lightweight and widely available, it’s perfect for singles though couples or taller sleepers may prefer the extra length of a Queen.
Queen Mattress (153 cm x 203 cm)
The Queen mattress is Australia’s most popular size, making up nearly 40% of all sales. Spacious enough for two adults without overwhelming the room, it’s the perfect middle ground a comfortable, balanced choice for most couples and bedrooms.
King Mattress (183 cm x 203 cm)
A King mattress is all about space perfect for you, your partner, the kids, and even the dog. Just ensure it fits your room with 60cm clearance. For comfort and luxury, nothing beats a mattress truly fit for a king.
Super King Mattress (203 cm x 203 cm)
The Super King is the largest mattress we stock, perfect for spacious master suites and creating a true sleep sanctuary. As its name suggests, it needs a generously sized room to fit comfortably and show off its luxury.
Frequently Asked Questions
What is the order of bed sizes from smallest to largest?
In Australia, the orders are Single, King Single, Double, Queen, King, and Super King. Each step up offers more width or length, giving you extra space to stretch out.
What is the most comfortable mattress size?
Comfort depends on who’s sleeping on it. For singles, a Double or King Single works well. For couples, a Queen is often ideal, while a King provides more room to move.
Is a queen-size bigger than a king-size?
No, a King is wider than a Queen, making it more spacious for couples. However, both sizes are the same length, so the difference is mainly in width.
What is the biggest mattress size?
The Super King is the largest standard mattress in Australia, measuring 203cm x 203cm. It’s designed for ultimate space and comfort, perfect for families or larger bedrooms.
How to determine the perfect mattress size?
Consider the sleeper’s height, body weight, and how much space you prefer at night. Also, factor in your bedroom layout; ideally, leave at least 60cm around the bed for easy movement.