Width of King Size Bed Australia

The width of a king size bed in Australia is approximately 183 cm. More precisely, many Australian king mattresses measure 183 × 203 cm, while some manufacturers specify 183.5 × 203 cm. The 183 cm figure is therefore the most useful standard measurement when planning a bedroom or shopping for bedding.

A king bed is 30 cm wider than a standard Australian queen, which is approximately 153 × 203 cm. This extra width provides considerably more personal sleeping space for couples while keeping the same 203 cm length.

Quick Facts About the Width of King Size Bed Australia

• Standard Australian King mattress width: approximately 183 cm
• Some manufacturers specify: 183.5 cm
• Standard King mattress length: 203 cm
• Approximate dimensions in millimetres: 1,830 × 2,030 mm
• Approximate imperial dimensions: 72 × 80 inches
• Queen mattress width: approximately 153 cm
• King is approximately 30 cm wider than Queen
• Australian Super King width: approximately 203 cm
• Mattress dimensions are different from the overall external dimensions of a bed frame

What Is the Width of a King Size Bed in Australia?

In simple terms, an Australian King mattress is about 183 cm wide.

This measurement refers to the mattress itself, not necessarily the complete bed. A bed frame can be wider because of its side rails, headboard, upholstery, storage components or decorative detailing.

For bedroom planning, this distinction is important. If you are deciding whether a King bed will fit comfortably, measure the outside dimensions of the actual bed frame, rather than allowing only 183 cm for width.

A King mattress is approximately 203 cm long, creating a generous rectangular sleeping surface of around 183 × 203 cm.

Why Is King Bed Width Important?

The width of a bed has a direct effect on both sleeping comfort and bedroom layout.

For couples, moving from a Queen to a King adds approximately 30 cm of width without adding any extra length. That additional space can make a noticeable difference for partners who move during the night, prefer more personal space or occasionally share the bed with children or pets.

The extra width also changes the visual proportion of the bedroom. A King bed naturally becomes a stronger focal point, so surrounding furniture should be scaled accordingly.

Australian King Bed Dimensions

Exact dimensions can vary slightly between manufacturers, so always check the specifications of the particular mattress or bed frame before purchasing.

How Much Wider Is a King Than a Queen?

An Australian King is approximately 30 cm wider than a Queen.

Both are generally around 203 cm long, so the main difference is width rather than length.

This means the upgrade from Queen to King is particularly useful when your bedroom has enough floor space but you want a larger sleeping surface rather than a longer bed.

For two people, a Queen provides approximately 76.5 cm of mattress width per person, while a King provides approximately 91.5 cm per person.

How Much Space Does a King Bed Need?

The mattress itself occupies approximately:

183 cm wide × 203 cm long

However, you should allow additional space around the bed for walking, bedside tables, wardrobes, doors and other furniture.

A practical bedroom layout should leave comfortable circulation space rather than placing furniture immediately against the sides of the bed.

Some Australian guides recommend a room of roughly 3.2 × 4.2 m or larger for comfortable King-bed planning, while larger rooms can provide a more spacious and balanced arrangement.

The ideal room size ultimately depends on the bed frame, furniture arrangement and how much open space you prefer.

Does the Bed Frame Have the Same Width as the Mattress?

No.

This is one of the most important things to remember when measuring a bedroom.

A 183 cm-wide mattress does not mean the finished bed will be exactly 183 cm wide.

For example, a timber bed frame may extend slightly beyond the mattress on each side. An upholstered bed with a wide headboard can be considerably wider, while a storage bed may have additional structural components.

Always check:

• Mattress width
• Mattress length
• Overall frame width
• Overall frame length
• Headboard width
• Storage components
• Required clearance around the bed

If you are working with a tight space, the manufacturer's overall external dimensions are more important than the mattress measurement alone.

How to Choose a King Bed for Your Bedroom

1. Measure the Room

Measure the room before choosing the bed.

Record the position of doors, windows, wardrobes, power points and existing furniture.

2. Allow for the Frame

Start with the 183 cm mattress width, then add the dimensions of the chosen bed frame.

Never assume every King frame has the same external footprint.

3. Plan Your Bedside Tables

A King bed generally benefits from appropriately scaled bedside tables.

A pair of wider night tables can create a balanced appearance, while slimmer tables may be better for compact rooms.

4. Consider Walking Space

Allow comfortable space beside the bed and at the foot.

The exact amount depends on the room, but the goal is easy movement rather than simply making the furniture technically fit.

5. Check Your Bedding

Australian King bedding should be selected specifically for an Australian King mattress.

International King sizing can differ considerably, so always check the actual measurements rather than relying only on the word "King".

Benefits of a 183 cm-Wide King Bed

More personal space: Couples have more room to spread out.

Better movement: The additional width can reduce the feeling of being crowded during sleep.

Family friendly: The larger surface can accommodate occasional visits from children or pets.

Luxurious proportions: A King bed creates a substantial, comfortable centrepiece.

Flexible styling: It provides enough visual scale for substantial headboards, bedside tables and layered bedding.

Long-term versatility: The extra space can become increasingly valuable as sleeping preferences change.

House of Isabella Recommendations

At House of Isabella Australia, a King bed can become the foundation for a beautifully layered bedroom.

Balance the generous width with appropriately scaled bedside tables, a considered headboard and soft bedding. The Florabelle Collection can introduce botanical-inspired decorative details, while Emac & Lawton pieces can add sculptural character.

For a warmer contemporary scheme, consider complementary pieces from Zaffero, Gallery Home or the OneWorld Collection. Café Lighting & Living can also inspire bedside and ambient lighting that enhances the proportions of a larger bed.

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

Width of King Size Bed Australia Trends for 2025

Larger Bedroom Furniture

As King beds become increasingly popular, bedrooms are being designed around larger-scale furniture rather than treating the bed as an afterthought.

Statement Headboards

Wide upholstered and timber headboards can extend beyond the 183 cm mattress width to create a strong architectural focal point.

Integrated Storage

King beds with drawers or lift-up storage are useful where additional bedroom storage is needed without increasing the number of separate furniture pieces.

Natural Timber

Timber King bed frames bring warmth and texture to large bedrooms and work particularly well with neutral bedding.

Soft Upholstery

Boucle, linen-look and other tactile upholstery can soften the substantial visual scale of a King bed.

Layered Bedding

Larger beds provide an opportunity to combine sheets, quilts or doonas, cushions and throws for a more luxurious appearance.

Styling Advice for a King Bed

Balance the width. A 183 cm-wide mattress can look under-furnished if surrounded by very small accessories.

Use proportionate bedside tables. Choose tables that visually relate to the scale of the bed rather than focusing solely on available floor space.

Add a substantial rug. A correctly sized rug can visually anchor the bed and define the sleeping zone.

Layer your bedding. Combine different textures rather than relying on one perfectly matched set.

Choose a considered headboard. A wider headboard can emphasise the generous proportions of the King bed.

Keep circulation clear. A beautiful bedroom should still be easy to move through.

Use warm lighting. Bedside lamps can soften the larger visual scale of a King bed and create a relaxed evening atmosphere.

Common Questions

What is the standard width of a King bed in Australia?

A standard Australian King mattress is approximately 183 cm wide and 203 cm long. Some manufacturers specify 183.5 cm width.

Is a King bed wider than a Queen in Australia?

Yes. A King is approximately 30 cm wider than a Queen, while both are generally 203 cm long.

Is an Australian King the same as a US King?

No. An Australian King is approximately 183 × 203 cm, while a US King is wider. Always check actual dimensions when purchasing imported mattresses, frames or bedding.

How wide is a Super King bed in Australia?

An Australian Super King mattress is approximately 203 cm wide × 203 cm long, making it 20 cm wider than a standard Australian King.

Does a King bed frame measure 183 cm wide?

Not necessarily. The 183 cm measurement generally refers to the mattress. The complete frame may be wider depending on its construction and headboard design.

The Finishing Touch

Understanding the width of a king size bed in Australia makes choosing the right mattress, frame and bedroom layout much easier.

The standard measurement to remember is approximately 183 cm wide × 203 cm long. For some manufacturers, the width may be listed as 183.5 cm, so checking the exact product specifications is always worthwhile.

More importantly, remember that the mattress is only part of the equation. A well-designed bedroom should account for the complete bed frame, bedside furniture, wardrobes, doors and comfortable walking space.

With its generous width and versatile proportions, an Australian King bed offers an excellent balance of comfort, space and elegant bedroom styling.

Related Glossary Terms

• King Size Bed
• King Mattress Measurements
• Queen Bed Width
• Bed Frame
• King Bed Frame
• Bedroom Furniture

Disclaimer

Brand and collection 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 the brands mentioned, and all trademarks remain the property of their respective owners.