Mattress Sizes and Dimensions Guide for Choosing the Right Fit

Buying Guides — Sizing

Australian mattress sizes don't always match what you'll find overseas, and getting it wrong means a bed frame that doesn't fit or a mattress that's too tight for the room. This guide runs through every standard AU mattress size — from single through to super king — with exact dimensions, so you can match the right size to your bedroom, your sleep habits, and who's sharing the bed. Browse the full range in our mattress sale collection once you've settled on a size.

Australian mattress sizes at a glance

Here's every standard Australian mattress size side by side. Widths and lengths are the mattress dimensions themselves, not the bed frame or room allowance.

Single mattress: ideal for solo sleepers

The single mattress is built for solo sleepers and smaller bedrooms. It measures 92 cm wide and 187 cm long, making it a versatile fit for kids' bedrooms, guest rooms, or compact living spaces. It's also a popular choice for teenagers and young adults who want their own sleep space without needing a full-sized room to fit it in.

King single mattress: the balance of space and comfort

Larger than a single, the king single mattress offers extra room without stepping up to a double. It measures 106 cm wide and 203 cm long, giving a single sleeper the extra length to stretch out comfortably. King single mattresses suit growing teenagers, taller individuals, or anyone who wants a bit more room to move during the night.

Double mattress: for couples or single sleepers wanting extra space

The double mattress (sometimes called a full-size mattress) suits both couples and single sleepers after more room than a king single. It measures 137 cm wide and 187 cm long, offering enough width for two people in a cosier sleep environment, or plenty of room for one person to spread out. Doubles are a common choice for guest rooms or smaller master bedrooms.

Queen mattress: the gold standard for couples

The queen mattress is the most popular size for Australian couples, balancing space and affordability. Measuring 153 cm wide and 203 cm long, a queen gives most couples enough room to sleep comfortably without feeling cramped, while still fitting in a standard-sized master bedroom. It's also a strong option for single sleepers who prefer a more generous sleep surface.

King mattress: extra width for spacious sleep

For couples who want more width to spread out, the king mattress is the step up from queen. Measuring 183 cm wide and 203 cm long, a king gives each side of the bed noticeably more personal space — useful if one partner moves around during the night. Measure your bedroom before buying: a king needs a genuinely spacious room to avoid overpowering it.

Super king mattress: uncompromising space and comfort

The super king is the largest standard Australian mattress size, at 203 cm wide and 203 cm long — a perfect square. It gives couples the most personal space of any standard size, which is ideal for people who run hot, move a lot in their sleep, or simply want a hotel-suite feel at home. Super kings need a genuinely large bedroom and a matching bed frame, so check your room dimensions and doorway clearances before ordering.

Choosing the right mattress size

Once you know the dimensions, a few practical factors will point you to the right size for your bedroom:

• Room size: Measure your bedroom space first, and leave clearance around the bed for walking room and other furniture — not just the mattress footprint.
• Sleeping habits: Consider whether you sleep alone or with a partner, and how much you move during the night. Combination sleepers and restless sleepers generally do better with more width.
• Body size: Taller sleepers should look at king single, king, or super king so their feet don't hang off the end.
• Bedroom function: A guest room or shared bedroom may call for a larger size to suit different sleepers over time.
• Budget: Larger mattresses use more materials, so they typically cost more than a smaller size in the same range.
• Accessories: Bed frames, sheets, and mattress protectors all need to match your chosen mattress size, so confirm sizing before you buy the rest of the setup.

Our team can talk you through sizing in person at any of our five South-East Queensland showrooms, or you can browse the full range online and filter by size to compare your options.

FAQs

• What's the difference between a queen and a king mattress?

  A queen mattress measures 153 cm wide by 203 cm long, while a king measures 183 cm wide by 203 cm long — the same length, but 30 cm more width. That extra width gives each side of the bed more personal space, which matters most for couples who move a lot during the night.

• What mattress size fits a small bedroom?

  Single (92 x 187 cm) and king single (106 x 203 cm) mattresses are the best fit for compact bedrooms, guest rooms, or kids' rooms. Double (137 x 187 cm) can also work in a smaller master bedroom if you don't need a lot of clearance around the bed.

• Does a king single mattress fit two people?

  Not comfortably. At 106 cm wide, a king single is designed for one sleeper. Couples generally start at double (137 cm wide) and are better served by queen (153 cm) or king (183 cm) for long-term comfort.

• How much extra room does a super king give over a king?

  A super king is 203 cm wide compared to 183 cm for a king — an extra 20 cm of width, with the same 203 cm length. It's the largest standard Australian mattress size, so check your bedroom and doorway clearances before choosing one.

• What size mattress should I choose for a growing teenager?

  A king single (106 x 203 cm) is a popular choice for teenagers, since the 203 cm length comfortably fits taller growing bodies while still being compact enough for most bedrooms. A double is also an option if the room allows for the extra width.