double bed dimensions

What are double bed dimensions?

Double bed dimensions in Australia generally refer to a mattress measuring approximately 138 cm wide × 188 cm long. Depending on the manufacturer, you may also see measurements such as 137 cm × 188 cm or 138.5 cm × 190 cm, so checking the exact mattress specifications is important before purchasing a frame or bedding.

In simple terms, a Double sits between a Single or King Single and a Queen. It offers considerably more width than a Single while taking up less floor space than a Queen, making it a practical choice for teenagers, single adults, guest rooms and compact bedrooms.

One important distinction: mattress dimensions are not necessarily the same as the external dimensions of the bed frame. A substantial headboard, upholstered side rails, footboard or built-in storage can increase the overall footprint.

Quick Facts

• Typical Australian Double mattress: 138 × 188 cm.
• Approximate size in millimetres: 1,380 × 1,880 mm.
• Approximate size in inches: 54 × 74 inches.
• A Double is wider than a Single and narrower than a Queen.
• It can accommodate two people, although it is relatively compact for couples.
• Double beds are popular in guest bedrooms and rooms with limited floor space.
• Bed frames may be larger than the mattress itself.
• Exact dimensions can vary slightly between manufacturers.

Why Are Double Bed Dimensions So Important?

The main reason double bed dimensions matter is that even a small difference can affect how comfortably a bed fits within a bedroom.

A Double mattress may measure around 138 × 188 cm, but the complete bed could occupy more space once you add the frame and headboard. If you are planning a bedroom around wardrobes, bedside tables, drawers or a dressing table, measuring only the mattress can result in a cramped layout.

Double beds are particularly useful when you want more sleeping space without moving all the way up to a Queen.

They can also make excellent guest beds. A well-styled Double bed can provide a comfortable sleeping arrangement while leaving enough floor space for other furniture.

Standard Double Bed Dimensions in Australia

Mattress Dimensions

A commonly recognised Australian Double mattress is approximately:

• Width: 138 cm
• Length: 188 cm
• Width: 1,380 mm
• Length: 1,880 mm

Some manufacturers use slightly different specifications. For example, Sealy lists its Australian Double mattress at 138.5 × 190 cm, while other Australian guides use 138 × 188 cm.

This is why the safest approach is to measure the actual mattress and check the manufacturer's specifications before purchasing sheets, protectors or a bed frame.

Bed Frame Dimensions

The external size of a Double bed frame can be larger than the mattress.

Additional space may be required for:

• Headboards
• Side rails
• Footboards
• Upholstered edges
• Storage drawers
• Decorative detailing
• Bedside clearance

If your bedroom is compact, always check the overall assembled dimensions rather than relying only on the mattress size.

Double Bed Dimensions Compared With Other Sizes

Understanding the difference between mattress sizes makes planning much easier.

These figures are useful general guides, but individual mattress brands may vary slightly.

The most noticeable difference between a Double and Queen is both width and length. A Queen is approximately 15 cm wider and 15 cm longer than the commonly quoted 138 × 188 cm Double.

Popular Double Bed Styles

Upholstered Double Beds

Upholstered frames can bring softness and a more luxurious appearance to bedrooms. They work particularly well in guest rooms and contemporary master bedrooms.

Timber Double Beds

Timber frames create warmth and can complement natural Australian interiors beautifully. Oak, walnut-inspired and darker timber finishes can all create different moods.

Minimalist Double Beds

Slimline frames are useful when floor space is limited. Their simple silhouettes can help a compact room feel more open.

Storage Double Beds

A storage bed can make particularly good use of limited bedroom space. Drawers beneath the mattress provide a convenient place for spare bedding, clothing or other household items.

Statement Double Beds

A substantial headboard can turn a Double bed into a strong visual focal point. This can work beautifully in guest rooms where you want the bed to provide most of the room's decorative impact.

How to Choose a Double Bed

1. Measure Your Mattress

Start by confirming the exact mattress dimensions. Don't assume every Australian Double is identical.

2. Measure the Room

Measure the full bedroom, including doors, wardrobes, windows and other fixed elements.

3. Check the Frame Footprint

Compare the mattress size with the manufacturer's external frame dimensions.

4. Allow Walking Space

A bed should not simply fit inside a room; there should be enough space to move comfortably around it.

5. Consider Bedside Furniture

If you want bedside tables on both sides, include their width when planning the layout.

6. Think About Who Will Use It

A Double can be generous for one sleeper but comparatively compact for two adults. For couples who prefer more personal sleeping space, a Queen may be a better option.

7. Match Your Bedding

Check that your sheets, mattress protector, doona and quilt cover are designed for the exact Australian Double dimensions.

Benefits & Use Cases

Space efficiency: Double bed dimensions offer additional sleeping width without requiring the floor space of a Queen.

Guest rooms: A Double is a versatile option for accommodating overnight visitors.

Teenagers: It provides more room than a Single as a child grows.

Solo adults: A Double gives one person generous space to stretch out.

Compact bedrooms: It can provide a comfortable sleeping surface while preserving room for other furniture.

Flexible styling: Double beds work with contemporary, traditional, coastal and minimalist interiors.

Storage options: Storage bases can make the most of otherwise unused space.

Affordable upgrade: Moving from a Single to a Double can significantly increase sleeping space without the footprint of a larger Queen or King.

House of Isabella Recommendations

When working with double bed dimensions, the goal is to create balance between the bed and everything around it.

A beautifully styled Double bed can become the centre of a guest room or teenager's bedroom without making the space feel crowded. Natural textures and decorative accessories inspired by the Florabelle Collection can create a warm, relaxed atmosphere.

For a more refined bedroom, the distinctive character associated with Emac & Lawton can inspire the use of sculptural accessories, decorative mirrors and carefully selected bedside pieces.

The aesthetic associated with Gallery Home can also provide inspiration for artwork and wall décor, particularly when you want to create a polished guest bedroom.

For warm bedside lighting, the style associated with Café Lighting & Living can help create a softer evening atmosphere.

At House of Isabella Australia, customers can enjoy Afterpay and Zip, fast delivery Australia-wide, East and West Coast warehouses, a large in-stock catalogue, exclusive and distinctive designs and Australian-based customer care.

Double Bed Dimensions Trends for 2025 in Australia

Space-Conscious Bedrooms

As Australian homes increasingly make use of flexible spaces, Double beds remain useful for bedrooms where comfort and floor space both matter.

Multi-Purpose Guest Rooms

A Double bed can work well in a guest room that also needs to function as a study, dressing room or occasional living space.

Built-In Storage

Storage beds continue to be practical where homeowners want to maximise usable bedroom space.

Upholstered Headboards

Large but carefully proportioned headboards can make a Double bed feel more luxurious without requiring a larger mattress.

Natural Materials

Timber, linen, woven textures and warm neutral colours continue to create relaxed Australian bedroom schemes.

Layered Bedding

Layering sheets, quilts, coverlets and throws can give a Double bed a fuller, more inviting appearance.

Styling Advice

The proportions of a Double bed make it relatively easy to style without overwhelming the room.

Begin with appropriately sized bedding. A correctly fitted sheet creates a neat foundation, while a well-proportioned quilt or doona adds softness and visual volume.

Two bedside tables can create symmetry, but they do not need to be large. In a compact bedroom, slimline bedside furniture can preserve valuable floor space.

Consider the wall behind the bed as part of the overall composition. A statement artwork, mirror or upholstered headboard can create a focal point without requiring additional furniture.

If the room is small, keep the palette relatively light and use texture rather than excessive decoration to add interest.

For a guest room, neutral bedding can make the space feel welcoming to different visitors. Add personality through artwork, a small table lamp, a textured throw and carefully chosen accessories.

If the Double bed is for a teenager, consider flexible storage and an easily updated colour scheme so the room can evolve over time.

Common Questions About Double Bed Dimensions

What are the standard double bed dimensions in Australia?

A commonly used Australian Double mattress size is approximately 138 cm wide × 188 cm long. Some manufacturers use slightly different dimensions, so always check the specific product.

Is a Double bed bigger than a Queen?

No. A Queen is larger. A typical Australian Queen measures around 153 × 203 cm, compared with approximately 138 × 188 cm for a Double.

Can two adults sleep on a Double bed?

Yes, a Double can accommodate two adults, but it is the smallest common Australian mattress size designed for two people. Couples who want more personal sleeping space will generally find a Queen more comfortable.

Are Double bed frames the same size as Double mattresses?

No. The frame can be larger than the mattress because of the headboard, side rails, footboard or storage components.

What size room is suitable for a Double bed?

A Double can work well in a compact bedroom, but the ideal room size depends on the rest of the furniture and desired circulation space. Measure the complete bed footprint and leave comfortable access around it.

Related Glossary Terms

• Double Bed
• Queen Size Bed
• King Single Bed
• Bed Dimensions
• Bed Frame
• Bedroom Furniture

The Finishing Touch

Understanding double bed dimensions makes it much easier to plan a bedroom that feels comfortable rather than cramped. As a general Australian guide, a Double mattress is approximately 138 × 188 cm, although exact measurements vary between manufacturers.

Remember to consider the entire bed rather than the mattress alone. Headboards, frames, storage bases and bedside furniture can all change the amount of floor space required.

For guest rooms, teenagers, solo adults and compact bedrooms, a Double can offer an appealing balance of comfort and practicality. With thoughtful proportions, layered bedding and carefully chosen furniture, it can also become a stylish focal point in the room.

Disclaimer

Brand names mentioned in this glossary are included purely for descriptive and contextual purposes. House of Isabella Australia is not affiliated with, endorsed by, or associated with these brands unless expressly stated otherwise. All trademarks and brand names remain the property of their respective owners.