No one likes sleeping on a mattress that doesn’t provide enough space. While large mattresses that provide a lot of space are nice to have, you’ll realise that there’s not enough space to walk or for other bedroom furniture. Choosing the right bed size can make a big difference to how comfortable your bedroom feels and how well you sleep.

At Bevmarks, we know that the right bed doesn’t just depend on the size. It should suit your room’s layout, sleeping preferences, and future needs. In this guide, we’ll break down the most common mattress sizes and help you choose the best fit for your home.

Mattress Dimensions: A Quick Comparison Guide

Mattress sizes are generally standard across Australia. This table briefly breaks down each mattress size:

Mattress Size	Dimensions (cm)	Ideal For
Single	92 cm x 188 cm	1 person
Long Single	92 cm x 203 cm	1 person
King Single	107 cm x 203 cm	1 person
Double	138 cm x 188 cm	1 to 2 people
Queen	153 cm x 203 cm	2 people
King	183 cm x 203 cm	2 adults with 1 young kid
Super King	203 cm x 203 cm	2 adults with 2 young kids

A Complete Breakdown of Different Mattress Dimensions

Single Mattress

Single mattresses are a popular choice for children transitioning from a cot or toddler bed. Measuring at 92 cm x 188 cm, it provides enough room for young children and leaves plenty of space for toys, desks, and other bedroom furniture. 

Of course, single mattresses are great for adults as well! Their smaller size makes them a cost-effective and space-saving choice for adults who live alone. However, taller adults may find this mattress too small, so they would be better off with a Long Single or King Single.

Best For:

• Young children
  
• Shorter adults (less than 175 cm)
  
• Small bedrooms
  
• Guest rooms
  
• Bunk beds
  
• Budget-conscious buyers

Explore our range of single mattresses to find a practical and comfortable option for compact bedrooms or kids’ bedrooms.

Long Single Mattress Size

A Long Single mattress offers the same width as a standard Single but provides an additional 15cm in length. This extra space makes it ideal for taller sleepers who need more legroom without increasing the mattress width.

Long Single mattresses are also commonly used in adjustable bed systems and split king configurations.

Best For:

• Teenagers experiencing growth spurts
  
• Adults over 185cm tall
  
• Adjustable bed bases
  
• Guest bedrooms
  
• Smaller rooms requiring extra length

Browse our Long Single Mattress Collection to find the perfect option for your sleep needs.

King Single Mattress Size

The King Single combines extra width and extra length, making it a versatile option for growing teenagers and single adults who require more space. It provides more room to stretch out than a standard Single or Long Single while still fitting comfortably in most bedrooms.

Best For:

• Teenagers
  
• Single adults
  
• Taller sleepers
  
• Guest rooms
  
• Smaller apartments

If you need more room without taking up too much space, explore our collection of king single mattresses.

Double Mattress Size

Double mattresses offer more sleeping space than a King Single while remaining a good fit for smaller bedrooms.

Although they can accommodate two people, many couples find a Double mattress restrictive over time because of its smaller size, compared to a Queen or King.

Best For:

• Solo adults
  
• Teenagers who want extra room
  
• Guest rooms
  
• Smaller primary bedrooms
  
• Couples in compact spaces

Find a double mattress that balances comfort, space, and practicality for better sleep.

Queen Mattress Size

For most couples, a queen mattress is the best all-around option. It gives both sleepers more room than a double bed, while still fitting comfortably in most primary bedrooms. It’s also a great choice for solo sleepers who appreciate the extra space.

Best For:

• Couples
  
• Primary bedrooms
  
• First-home buyers
  
• Growing families
  
• People upgrading from a Double mattress

If you’re browsing through different options made for two people to sleep on, a queen mattress is the safest option to start with.

King Mattress Size

A king mattress is one of the best options for larger primary bedrooms, where the bed can sit comfortably without making the room feel crowded. With significantly more width than a Queen, it's ideal for couples who value personal space or families who occasionally share the bed with children or pets.

Best For:

• Couples wanting more bed space 
  
• Families with young children
  
• Pet owners
  
• Large primary bedrooms

If you’re looking for a mattress that offers generous space, then a king mattress might be the perfect choice for you.

Super King Mattress Size

A super king mattress is the largest standard mattress size that you can get in Australia. Measuring 203 cm x 203 cm, it is also wide enough to accommodate pets or small children who sleep with their parents.

It’s best suited to large primary bedrooms and couples who are looking for the highest quality and comfort you can get from a mattress.

Best For:

• Couples wanting maximum comfort
  
• Families with young children
  
• Pet owners
  
• Primary bedrooms with generous room sizes
  
• Luxury sleep setups

If you’re seeking maximum space and comfort, our super king mattress collection is the perfect fit.

Bedroom Size Recommendations

Your bed and mattress take a huge chunk of space in your bedroom, so you have to make sure you have enough space for walking and other furniture, such as dressers and tables. To ensure your mattress fits comfortably, refer to the following bedroom size recommendations:

Bed Size	Recommended Room Size
Single	2.5 m x 3 m
Long Single	2.6 m x 3.2 m
King Single	2.6 m x 3.2 m
Double	3.2 m x 3.4 m
Queen	3.5 m x 4.5 m
King	4.0 m x 4.5 m
Super King	4.5 m x 5.0 m

These recommendations help ensure adequate walking space around the bed and create a more functional bedroom layout. It’s crucial to measure your space before choosing your mattress to ensure the correct fit.

Mattress Size & Bed Frame Size

When measuring your room, it’s important to note that mattress dimensions and bed frame dimensions aren’t always the same.

A bed frame will typically be wider or longer, especially if it includes a bedhead, footboard, or storage drawers. For example, a queen mattress measures 153 cm x 203 cm, but a queen bed frame can measure 166 cm x 221 cm, taking up more space.

Consider these tips before choosing the right bed frame size:

• Check the manufacturer’s external dimensions rather than assuming it matches the mattress size. A bed frame may add anywhere from 5–20 cm to the mattress's width and length.
  
• Leave adequate clearance around the bed. As a general guide, aim for at least 60–75 cm of walking space on the sides and foot of the bed.
  
• Remember to account for the space needed to open under-bed storage drawers fully. In some rooms, a lift-up gas-lift storage base may be a more practical option.
  

How to Choose the Best Mattress Size

A lot of different factors go into choosing the right mattress size. These will help guide your decision until you find the most appropriate one.

Measure Your Bedroom Space

A mattress should enhance your room, not overwhelm it. Measure your space and allow enough room to move comfortably around the bed.

• Aim for at least 60 to 75 cm of clearance on each side
  
• Consider doorways, wardrobes, and bedside tables
  
• Think about the overall layout for a balanced, clutter-free feel
  

Balance Budget and Value

While larger mattresses cost more, they can deliver better comfort and durability over time. Instead of focusing only on price, consider the value of improved sleep quality and reduced wear from overcrowding.

Plan For the Future

A mattress is a long-term investment, so think ahead. Are you planning to move home, upgrade your bedroom, or grow your family? Choosing a slightly larger size now can save you from replacing your mattress sooner than expected.

Frequently Asked Questions

What Is the Most Popular Mattress Size in Australia?

The Queen mattress is the most popular mattress size in Australia because it provides ample sleeping space for couples while fitting comfortably in most bedrooms.

How Much Space Should I Leave Around My Bed?

Ideally, allow at least 60-75cm of clearance around the sides and foot of the bed to ensure comfortable movement throughout the room.

Can Two Adults Sleep Comfortably on a Double Mattress?

While two adults can sleep on a Double mattress, many couples find it restrictive. A Queen mattress generally provides a more comfortable long-term solution.

Find The Right Bed Size With Bevmarks 

Choosing the right bed size becomes much easier when you know how much space your room has, along with your sleeping habits and preferences. To recap:

• A single, long single, or king single bed could be suitable for a child or teen
  
• A double is a good choice for couples or solo sleepers who want extra space
  
• A queen bed is the most reliable choice for most couples
  
• A king or super king will provide a generous amount of space for couples or families with small children or pets.
  

At Bevmarks, our team of sleep professionals can help you compare different mattresses, test comfort levels to suit your preferences, and find the right mattress for your home. Whether you’re looking to furnish your home or shop for new mattresses for your new home, our team is here to help you find the perfect sleeping solution.

Visit your closest Bevmarks showroom or send us a message to get started today.