Double Bed Mattresses

What Size Is a Double Mattress in Australia?

The common Australian double mattress size is approximately 138cm × 188cm, or 1380 × 1880mm.

Mattress size	Typical Australian dimensions	Compared with a double
King Single	107 × 203cm	Narrower but 15cm longer
Double	138 × 188cm	—
Long Double	138 × 203cm	Same width, 15cm longer
Queen	153 × 203cm	15cm wider and 15cm longer
King	183 × 203cm	45cm wider and 15cm longer

A Long Double mattress measures approximately 138 × 203cm. It has the same width as a standard double but the extra length of a queen or king mattress.

This size is particularly important when shopping for an adjustable bed. While some adjustable bases are available in a standard Double, Long Double is a more common size across adjustable-bed ranges. If you choose a Long Double adjustable base, you will need a compatible Long Double mattress rather than a standard Double mattress.

A standard double remains a practical fit for smaller bedrooms, guest rooms, teenagers and solo adults who want more room than a single. The shorter 188cm length is worth considering for taller sleepers, who may prefer a Long Double, Queen, King Single or another longer mattress option.

If you see the term small double, look at the measurements carefully. It is not one of the main standard Australian mattress sizes and may refer to an imported or non-standard size.

Will a Double Mattress Fit in Your Bedroom?

Start with the mattress dimensions, then measure the complete setup.

A frame, upholstered surround, headboard or adjustable base may extend beyond the mattress edges. Measure the furniture you plan to use rather than assuming a 138 × 188cm mattress means the complete setup will occupy exactly that amount of floor space.

Also consider:

• clearance around the mattress;
• wardrobe and drawer access;
• bedroom doors;
• walking space;
• bedside furniture;
• power-point access for an adjustable base; and
• the delivery route into the room.

For a smaller bedroom, the extra width and length of a queen can make a noticeable difference to how usable the space feels.

Double Mattress or Queen Mattress?

The main difference is 15cm of width and 15cm of length.

A standard double is around 138 × 188cm, while a standard queen is about 153 × 203cm.

A double may suit you if:

• one person will use it most of the time;
• the bedroom is relatively compact;
• it is for a guest room;
• a queen would restrict movement around the room; or
• you want more sleeping space than a single or king single.

A queen may be the better choice if two adults will use the mattress every night and the room can comfortably accommodate the larger size.

Can Two Adults Sleep on a Double Mattress?

Yes, but it will feel more compact than a queen or king.

On a standard 138cm-wide double, two people sharing evenly have about 69cm of sleeping width each.

Whether that feels comfortable depends on the sleepers. Couples who tend to sleep close together may be happy with a double. Others may prefer more width, particularly if either person moves frequently during the night, is a larger-bodied sleeper or simply likes more personal space.

Partner disturbance matters too. Some mattresses use pocket springs, foam layers or other construction methods designed to reduce movement across the sleeping surface.

If you are unsure, compare a double and queen side by side before purchasing.

Choosing the Right Double Mattress for Support and Comfort

Size tells you whether the mattress will fit. Construction and firmness determine how it feels.

The right choice depends on factors such as:

• sleeping position
• body weight
• firmness preference
• pressure and comfort preferences
• partner movement
• temperature
• edge support
• mattress depth
• the type of base underneath it

If you experience back discomfort, do not assume the firmest mattress will automatically provide the best support. A soft, medium or firm mattress can feel very different depending on your body, sleeping position and the way the surface responds under load.

For health-related concerns, mattress selection should support comfort rather than be treated as a guaranteed treatment.

Memory Foam Double Mattresses

Memory foam responds to body heat and pressure and tends to create a more contouring feel.

It can also help limit movement transfer, which may be useful when two people share a double mattress.

Some sleepers find dense foam warmer than other constructions. If temperature is important to you, compare the complete design rather than judging it by the words “memory foam” alone. Cover materials, ventilation, foam density and other layers can all influence how breathable the mattress feels.

The Life Changing Beds Anti-Gravity Mattress, for example, uses bamboo-infused memory foam and is available in double size with different firmness options.

Pocket Spring Double Mattresses

Pocket springs move independently rather than operating as one connected spring unit.

This can provide more targeted support and may reduce the amount of movement transferred from one side of the mattress to the other.

The final feel depends on more than the number of springs. Comfort layers, foam, edge construction, mattress depth and firmness all affect the way a pocket-spring mattress performs.

Selected Life Changing Beds mattresses combine pocket springs with different comfort materials and firmness choices.

Natural Latex Double Mattresses

Latex generally has a more responsive feel than memory foam. Rather than allowing the sleeper to sink deeply into the surface, it tends to respond and rebound more quickly.

Latex mattresses can also use ventilation channels or pin-core construction to improve airflow.

The Life Changing Beds Natural Latex Mattress is available in soft, medium and firm options and is designed to flex with compatible adjustable bases.

Double Mattresses for Adjustable Bases

Not every mattress is suitable for an adjustable base, and size compatibility matters just as much as mattress construction.

While some adjustable beds are available in a standard Double size, it is more common to find adjustable models in Long Double. A Long Double is approximately 138 × 203cm, so it has the same width as a standard Double but is 15cm longer.

If you choose a Long Double adjustable base, you will need a compatible Long Double mattress. A standard Double mattress is shorter and should not be assumed to fit correctly simply because the width is the same.

The mattress also needs to flex repeatedly as the base raises and lowers without being damaged or interfering with movement.

Before purchasing, compare:

• the exact base and mattress dimensions;
• whether the size is Double or Long Double;
• mattress construction;
• mattress depth;
• flexibility;
• weight;
• manufacturer compatibility requirements; and
• the specifications of the adjustable base.

Do not assume every memory foam, spring, latex or hybrid mattress will work simply because another mattress using the same material does. The exact mattress and adjustable base pairing should be confirmed before purchase.

Compare adjustable mattresses.

Soft, Medium or Firm Double Mattress?

Firmness descriptions are useful as a starting point, but they are not universal.

A soft mattress from one range may feel firmer than a soft mattress from another. The same applies to medium and firm options.

Body weight also changes how firmness feels. A lighter person may sit higher on the sleeping surface, while a heavier sleeper may compress the comfort layers more deeply.

Think about:

• how you normally sleep;
• whether you prefer to sleep on or sink into the mattress;
• how your hips and shoulders feel on the surface;
• whether you feel supported when changing position;
• how stable the edge feels; and
• whether you share the mattress.

Trying several options in person can give you more useful information than choosing from a firmness description alone.

Using Pressure Mapping to Compare Mattresses

Life Changing Beds offers Reveal Compare by XSENSOR pressure mapping at its Hawthorn East showroom.

Pressure mapping measures how pressure is distributed between your body and different sleeping surfaces. It can help compare mattress options alongside comfort, posture, movement and product specifications.

It is a decision-support tool, not a medical diagnosis or guarantee that one mattress will prevent or treat a health condition.

Learn more about pressure mapping.

How Much Does a Double Mattress Cost?

There is no single price that defines a “good” double mattress.

Cost can vary significantly based on:

• foam, latex, spring or hybrid construction;
• mattress depth;
• firmness options;
• specialised support features;
• brand;
• materials;
• adjustable-base compatibility;
• current stock and availability; and
• current promotions.

When comparing prices online, make sure you are viewing the double-size variant. A product may display a starting price based on a smaller size.

Also consider long-term value rather than price alone. Review construction, warranty, compatibility with your base, delivery costs and any applicable comfort exchange conditions.

A more expensive mattress is not automatically better for you, and a lower-priced option is not automatically poor value. Suitability matters more than price in isolation.

Can You Put a Double Mattress on a Queen Frame?

Usually, a double mattress should be paired with a correctly sized double base or frame.

A typical queen frame is designed for a mattress about 15cm wider and 15cm longer than a standard double. Using a smaller mattress may therefore leave gaps and allow it to shift.

The same principle applies to putting a double mattress on a king frame or another larger base.

Compare the exact mattress and frame dimensions before ordering, especially where the furniture includes raised edges, surrounds or moving components.

How Much Does a Double Mattress Weigh?

There is no standard weight for a double mattress.

Weight depends on the construction, thickness and materials. A deep latex, spring or multi-layer mattress can be much heavier than a simpler foam mattress.

Weight becomes particularly important when the mattress needs to be carried:

• upstairs;
• through narrow doors;
• around tight corners;
• into an apartment;
• through a lift; or
• through a difficult delivery route.

Use the specifications for the exact model rather than estimating weight from size alone.

Double Mattress Delivery and Difficult Access

A mattress can fit perfectly in the room but still be difficult to get through the front door or up the stairs.

Before ordering, consider the full route from the property entrance to the final room. Tell Life Changing Beds about stairs, lifts, narrow doors, apartment access and other restrictions that could affect delivery.

Life Changing Beds provides its own delivery service across Victoria and can accommodate apartments, multi-storey properties and more complex delivery situations when access is assessed in advance.

For deliveries outside Victoria, third-party freight is used. Depending on the product and destination, the mattress may be shipped directly under the agreed delivery arrangement.

Delivery cost and scope vary, so request a delivery quote for your location and selected mattress where required.

Need a Double Mattress in a Box?

A mattress-in-a-box can be useful where a conventional mattress would be difficult to carry through a home.

A compressed mattress can be easier to manoeuvre through some hallways, doors and stairs before it is opened.

Life Changing Beds offers the Anti-Gravity memory foam mattress through itsmattress-in-a-box collection, including a double-size option.

Not every mattress is compressed or roll-packed. If access is important, confirm how the selected item is packaged before you order online or arrange delivery.

What Happens if the Mattress Does Not Feel Right?

Eligible standard and adjustable mattresses recommended by Life Changing Beds may qualify for one exchange under the 150-Night Comfort and Support Guarantee.

The policy has conditions. It is not an unlimited change-of-mind return.

Current requirements include purchasing and continuously using an eligible mattress protector, contacting Life Changing Beds within the required period and using the mattress for the minimum required time before an exchange can proceed. Delivery fees may also apply.

Review the full current policy before completing your purchase.

Read the 150-Night Comfort and Support Guarantee.

Try Double Mattresses at the Hawthorn East Showroom

Online specifications are useful, but mattress comfort is difficult to judge from a product description alone.

Visit Life Changing Beds at 624 Burwood Road, Hawthorn East VIC 3123 to compare double mattresses and different sleeping surfaces in person.

A consultation can help you compare:

• double versus queen sizing;
• soft, medium and firm options;
• memory foam, latex and spring constructions;
• partner disturbance;
• edge support;
• temperature comfort;
• adjustable-base compatibility; and
• mattress options for more complex mobility or care requirements.

You can also discuss room measurements, furniture, delivery access and your existing setup before making a decision.

Frequently Asked Questions About Double Mattresses

What size is a double mattress in Australia?

A common Australian double mattress size is approximately 138cm wide × 188cm long, or 1380 × 1880mm. Some models vary, so confirm the exact dimensions before purchase.

How wide is a double mattress?

A standard Australian double mattress is typically around 138cm wide.

How long is a double mattress?

A standard double mattress is usually around 188cm long. Queen, king and king-single mattresses are commonly longer.

How big is a double mattress in centimetres?

The common Australian size is approximately 138 × 188cm.

What size is a double mattress in inches?

A 138 × 188cm double mattress is approximately 54 × 74 inches.

Is a full mattress the same as a double?

“Full” is a term commonly used in overseas markets for a similar mattress category. The dimensions are not always identical to an Australian double, so compare the measurements before buying imported furniture or bedding.

Can two adults sleep on a double mattress?

Yes, although it is a compact option for two regular sleepers. Couples wanting more personal space may prefer a queen if the bedroom is large enough.

Can I put a double mattress on a queen frame?

It is generally better to use a correctly sized double base. A queen frame is larger and may leave gaps around the mattress.

How much does a double mattress cost?

Prices vary according to materials, construction, firmness, brand and features. Review the current double-size price and availability before purchasing.

How heavy is a double mattress?

There is no standard weight. Foam, latex, spring and hybrid mattresses can differ considerably, so use the specifications for the exact model.

Find a Double Mattress That Fits Your Room and the Way You Sleep

Start with size. A typical Australian double mattress measures about 138 × 188cm, making it a practical middle ground between a single and a larger queen.

Then compare the details that determine whether the mattress will actually suit you: firmness, construction, temperature comfort, partner movement, edge support and compatibility with your base.

Browse the current collection online or visit the Hawthorn East showroom to compare mattress options in person.

Book a Free Consultation