What is the most popular mattress size in Australia?

The Queen (153cm by 203cm) is the most common couple size in Australia. It fits most main bedrooms with bedside access on both sides and has the widest, cheapest bedding range.

Is an Australian King the same as a US King?

No. An Australian King is 183cm by 203cm, while a US King is 193cm by 203cm, and UK sizes differ again. Always check centimetre dimensions when buying from an overseas brand or importing bedding.

What room size do I need for a King bed?

Allow about 3.3m of clear wall for a King (183cm wide) so you keep roughly 60cm of walking space on each side. In anything smaller, a Queen usually lives better.

Single or King Single for a tall teen?

King Single. At 203cm it is 15cm longer than a standard Single and a little wider, which suits tall teens and doubles as a comfortable guest bed.

Mattress Sizing Guide

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Mattress Sizing Guide for Australian Homes

Your guide to mattress sizing guide for australian homes - building guidance for Adelaide and South Australia.

BPBuildPilot Editorial3 min readLast updated Feb 2026

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Content scope

This guide has been reviewed for South Australia (Adelaide metro + regional SA). Building licensing, warranty, stamp duty and approval rules differ in other Australian states — verify against your local authority before acting.

Mattress sizes in Australia are standardised, but the names and dimensions differ from the US and UK, so a King here is not a King everywhere. Getting the size right is the difference between a bedroom that feels generous and one where you shuffle sideways past the end of the bed. This guide lists every Australian mattress size with exact dimensions, the room size each one realistically needs, and how to choose between them when you are setting up a new home. All measurements are the Australian Standard sizes used by local makers.

At a glance

Single (92cm x 188cm)

$250 to $700

Kids rooms and tight spaces

King Single (107cm x 203cm)

$350 to $900

Teens, guest rooms and tall solo sleepers

Double (138cm x 188cm)

$450 to $1,100

Smaller rooms and occasional-couple use

Read time

3 min

Including FAQ and supplier shortlist.

Key takeaways

Check centimetre dimensions, not just the size name, especially against overseas brands
Queen (153 x 203cm) is the default for most Australian main bedrooms
A King needs about 3.3m of clear wall to keep bedside access both sides
A mattress-in-a-box avoids the doorway and stair-turn problems of a built base

Things to consider before you choose

Plain practical advice for Australian builds. No fluff.

Australian sizes are their own standard

Australian mattress dimensions do not match US or UK sizes of the same name. An Australian Queen is 1.53m by 2.03m. Always check the centimetre dimensions, not just the name, especially when buying bedding or a base from an overseas brand.

Room size and bedside access

Leave at least 60cm of walking space on each side you need to access, and about 90cm at the foot if there is a doorway or robe. As a rough rule, a Queen suits rooms from 3.0m by 3.4m, a King needs about 3.3m of clear wall, and a Super King wants a dedicated main suite.

Who and what shares the bed

For two adults, a Queen is the common default, but a King gives each person the same personal width as a King Single. If kids or pets pile in, or if one of you is tall, size up. For a tall sleeper, a Long Single or King (2.03m long) beats a standard Single at 1.88m.

Getting it into the room

A built base or ensemble must physically fit through doorways and around stair turns. A mattress-in-a-box sidesteps this because it ships compressed, which is a real advantage in new estates with tight hallways or upstairs main bedrooms.

Bedding availability and cost

Queen and King bedding is the easiest to find and cheapest. Super King and King Single ranges are smaller and dearer. Factor the ongoing cost of sheets, quilts and protectors into the size decision, not just the mattress.

Types of mattress sizing guide for australian homes

Quick compare

	Single (92cm x 188cm)	King Single (107cm x 203cm)	Double (138cm x 188cm)
Typical cost	$250 to $700	$350 to $900	$450 to $1,100
Best for	Kids rooms and tight spaces	Teens, guest rooms and tall solo sleepers	Smaller rooms and occasional-couple use

Single (92cm x 188cm)

The smallest standard size, for young children and compact rooms.

Typical cost: $250 to $700

Pros

• Fits very small rooms
• Cheapest mattress and bedding

Cons

• Too short for many adults
• One sleeper only

Best for: Kids rooms and tight spaces

View the Ergoflex Single· from $950Ad

King Single (107cm x 203cm)

Wider and longer than a Single, popular for older kids, teens and tall single sleepers.

Typical cost: $350 to $900

Pros

• Extra length suits tall sleepers
• Good for bunks and trundles

Cons

• Bedding range is smaller
• Still a single sleeper size

Best for: Teens, guest rooms and tall solo sleepers

View the Ergoflex King Single· from $1,000Ad

Double (138cm x 188cm)

A compact couple size for smaller rooms where a Queen will not fit.

Typical cost: $450 to $1,100

Pros

• Fits a small second bedroom
• Cheaper than a Queen

Cons

• Tight for two adults
• 188cm length suits shorter sleepers

Best for: Smaller rooms and occasional-couple use

View the Ergoflex Double· from $1,300Ad

Queen (153cm x 203cm)

The most popular Australian couple size and the easiest to buy bedding for.

Typical cost: $650 to $1,800

Pros

• Best fit for most main bedrooms
• Widest, cheapest bedding range

Cons

• Narrower per person than a King

Best for: Most couples and main bedrooms

View the Ergoflex Queen· from $1,700Ad

King (183cm x 203cm)

A generous couple size giving each person a King Single of space.

Typical cost: $900 to $2,500

Pros

• Spacious for two, plus kids or pets
• Same length as a Queen

Cons

• Needs a large room
• Heavier, dearer bedding

Best for: Larger main bedrooms and light sleepers who want space

View the Ergoflex King· from $1,900Ad

How much does it cost in Australia?

Across Australian makers, expect roughly $650 to $1,800 for a quality Queen and $900 to $2,500 for a King, with memory foam and pocket spring in a similar range. Buying direct from the maker, especially a mattress-in-a-box brand, usually lands at the lower end with a home trial attached, while showroom brands sit higher once sales markdowns are stripped out. Remember to budget for the base (an ensemble from $200, a frame from $250 to $900), a mattress protector ($60 to $150), two pillows ($120 to $300) and a bedding set ($150 to $400). Sizing up from Queen to King typically adds $250 to $700 to the mattress and a similar step-up across bedding.

Common mistakes to avoid

Buying by name instead of checking the centimetre dimensions against an overseas size
Choosing a King for a room that only leaves 30cm of bedside access
Forgetting a standard Single is only 188cm long, too short for many adults
Not confirming a built base will fit through the doorway and stair turns
Overlooking the higher ongoing bedding cost of Super King and King Single

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Mattress Sizing Guide

Mattress Sizing Guide for Australian Homes

Things to consider before you choose

Australian sizes are their own standard

Room size and bedside access

Who and what shares the bed

Getting it into the room

Bedding availability and cost

Types of mattress sizing guide for australian homes

Single (92cm x 188cm)

King Single (107cm x 203cm)

Double (138cm x 188cm)

Queen (153cm x 203cm)

King (183cm x 203cm)

How much does it cost in Australia?

Common mistakes to avoid

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