Double Size Mattress Australia: Is It Big Enough
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What Size Is a Double Mattress in Australia?
- Wider than a king single
- Narrower than a queen
- Ideal for solo adults, guest rooms, and smaller bedrooms
Is a Double Mattress Big Enough for Couples?
A double mattress can fit two adults, but whether it feels comfortable depends on your sleeping habits, body size, and how much personal space you prefer.
A standard Australian double mattress measures 138 cm × 188 cm, giving each sleeper around 69 cm of width.
For comparison:
- Queen mattress: approximately 76.5 cm per person
- King mattress: approximately 91.5 cm per person
A double mattress may work well for couples who:
- Have limited bedroom space
- Prefer a more compact sleeping setup
- Are smaller in build
- Do not move around much during sleep
However, for most couples using a mattress every night, a queen mattress is usually a more comfortable long-term choice because it provides additional width and length.
If you are deciding between a double and queen mattress, the main question is whether you prioritise saving space or having more room to sleep comfortably.
Who Should Choose a Double Mattress?
Solo Adults Who Want More Space
For single sleepers, a double mattress offers a comfortable upgrade from a single or king single. The additional width gives you more freedom to move, stretch out, or change sleeping positions without needing the larger footprint of a queen mattress.
Apartment and Small Bedroom Owners
In smaller Australian homes or apartments, a double mattress provides a good balance between comfort and available floor space. It offers more room than a single while keeping the bedroom layout flexible.
Guest Bedrooms
A double mattress is a versatile choice for guest rooms because it comfortably accommodates one adult and can also work for occasional couples staying overnight.
Teenagers Moving From a Single Bed
For teenagers who need more sleeping space as they grow, a double mattress can be a practical long-term upgrade while still fitting smaller bedrooms.
Budget-Conscious Buyers
Compared with a queen mattress, a double usually requires less investment for the mattress, bed frame, and bedding. This makes it a popular option for first homes, rental properties, and buyers looking for practical comfort.
Overall, a double mattress is best suited for sleepers who want more space than a single or king single, but do not need the larger size and cost of a queen mattress.
Double vs King Single: What’s the Real Difference?
For many Australian shoppers, choosing between a double and king single mattress comes down to one important question:
Do you need more width or more length?
Both sizes are popular choices for solo sleepers, but they are designed for different needs.
| Mattress Size | Dimensions | Best For |
|---|---|---|
| King Single | 107 cm × 203 cm | Taller sleepers, teenagers, narrow bedrooms |
| Double | 138 cm × 188 cm | Adults wanting more sleeping space |
The main difference is:
- King Single mattress: longer and narrower
- Double mattress: wider but shorter
A king single mattress is 15 cm longer than a double, making it a good option for taller sleepers who need extra leg room.
A double mattress is 31 cm wider, giving more shoulder space and allowing more freedom to move during sleep.
Choose a King Single If You:
- Need extra length for a taller body shape
- Are buying for a teenager who may continue growing
- Have a narrow bedroom and want to save floor space
- Prefer a longer sleeping surface
Choose a Double If You:
- Want more space to move while sleeping
- Prefer width over extra length
- Are upgrading from a single or king single mattress
- Want a more flexible option for bedrooms and guest rooms
For most adult solo sleepers, a double mattress feels more spacious because the additional width creates a more comfortable sleeping area. However, taller sleepers may find the extra length of a king single more suitable.
The best choice depends on whether you value sleeping width or sleeping length more.
Double vs Queen: Which Should You Choose?
| Feature | Double Mattress | Queen Mattress |
| Dimensions | 138 × 188 cm | 153 × 203 cm |
| Best For | Solo adults, teenagers, guest rooms | Couples, master bedrooms |
| Bedroom Size | Smaller bedrooms | Medium to large bedrooms |
Here’s where people hesitate.
A queen mattress measures 153 × 203 cm.
Compared to a double, it’s:
- 15 cm wider
- 15 cm longer
It doesn’t sound like much — but in a bedroom, it’s noticeable.
Choose a double if:
- Your room is under 3 metres wide
- You’re sleeping solo
- Budget matters
- You want more floor space
Choose a queen if:
- Two adults are sleeping long-term
- One or both sleepers are tall
- You want more personal space
In most Australian homes, queen is the “default couple size.” But that doesn’t mean double is wrong — it just means it’s more situational.
What Room Size Do You Need for a Double Bed?
This is where many people go wrong. They measure the mattress but forget about walking space.
| Room Size | Recommended Mattress |
|---|---|
| Under 3m × 3m | Double |
| 3m × 3.5m | Double or Queen |
| Over 3.5m × 3.5m | Queen or King |
A room around 3m × 3m usually provides a more comfortable layout.
This allows basic circulation and one accessible side.
This gives you:
- Two bedside tables
- Comfortable walking clearance
- Space for wardrobes or drawers
If your bedroom is on the smaller side, a double can feel much more practical than squeezing in a queen.
Is a Double Mattress Too Short?
At 188 cm long, a double is the same length as a single.
Taller sleepers may find the additional length of a queen or king single more comfortable.
This is where many tall Australians choose:
- King single (longer)
- Queen (longer and wider)
Length is often overlooked — but it makes a real difference in comfort.
Choosing a Double Mattress from Onebed
Once you have decided that a double mattress is the right size for your bedroom, the next step is choosing a mattress that matches your comfort needs.
Onebed offers several double size mattress options designed for different types of sleepers:
Onebed Essential – simple everyday comfort for solo sleepers and guest rooms.
Onebed Original – balanced support for sleepers wanting versatile comfort.
Onebed Max – enhanced comfort and support for those wanting a more premium feel.
All Onebed double mattresses are available in the standard Australian double size (138 cm × 188 cm), making them suitable for smaller bedrooms, guest rooms, and solo sleepers who want extra space without upgrading to a queen.
Final Thoughts
So… Is a Double Mattress Right for You?
It depends on how you sleep, how tall you are, and how much space you have.
A double is:
- Spacious for one
- Compact for two
- Practical for smaller rooms
- A great middle-ground size
It’s not oversized. It’s not tiny. It’s simply situational.
If you’re deciding between sizes, compare it alongside other Australian options in our full Bed Mattress Size Guide Australia to see how it stacks up.
