Australian mattress sizes differ from the US and UK — and getting this wrong means bedding that doesn't fit or a mattress that won't suit your frame. This guide covers all standard Australian mattress sizes and what each is best suited to.
Australian mattress sizes differ from those in the US and UK — if you're buying a mattress online and not paying attention, it's surprisingly easy to order the wrong size, end up with bedding that doesn't fit, or discover that your new mattress doesn't match your existing bed frame. This guide covers all standard Australian mattress sizes, what each is best suited to, and the key things to check before buying.
Here are the standard mattress dimensions used in Australia:
This is important to know if you're buying from international brands or searching for information on international review sites:
When buying bedding accessories — sheets, protectors, toppers — always check dimensions rather than relying on size names alone.
The standard single is the baseline mattress size. It's suitable for children from toddler age upward, and functional for single adults in smaller spaces. The 188cm length can be a limitation for taller adults. If a child is likely to stay in the bed into their later teenage years when they'll be taller, a king single may be a better long-term choice.
The king single is the most practical upgrade from a single — it's 15cm wider but typically fits in the same bedroom space with the right bed frame. This extra width makes a significant comfort difference for growing children and teenagers. The standard length remains 203cm in most king single mattresses in Australia, though some brands use 188cm — check specifications carefully.
The double sits between king single and queen in width. It's used less commonly in Australia than the queen — for most couples, a queen provides substantially more space for only a moderate price increase. Doubles make sense as a budget option or in smaller bedrooms where a queen won't fit.
The queen is Australia's most popular mattress size and the default recommendation for most couples. It provides adequate space for two adults, suits the standard Australian bedroom size, and is the size that most in-a-box brands default to in their pricing. If you're buying a mattress without a specific size constraint, a queen is almost always the right starting point.
An Australian king mattress is 30cm wider than a queen. For couples, this additional space is often transformative — each person gains 15cm of personal space, which reduces disturbance from a partner moving during the night. The king requires a larger room — allow at least 380cm x 320cm for the room to accommodate the mattress with comfortable walkway space. The price premium for king over queen is typically $200–$500 depending on the brand.
The super king is a square format at 203cm x 203cm. It's uncommon and typically reserved for very large master bedrooms. Standard bedding for super kings is more limited and more expensive. Most couples who want maximum space are better served by a regular king.
Australian bed frame sizes correspond to standard mattress sizes. However, some older frames — particularly those bought second-hand or inherited — may have non-standard dimensions. Always measure your bed frame before ordering a mattress. For in-a-box mattresses, the delivery box can typically be brought into the room and the mattress unrolled onto the frame, so a bedroom door that's too narrow isn't a barrier.
For most Australian couples, queen is the right starting point — and king is worth upgrading to if your bedroom allows it and you can stretch the budget. For children, king single is a smarter long-term choice than standard single. Always verify exact dimensions with the specific mattress brand before buying.
| Mattress | Price | Trial | Warranty | Rating | |
|---|---|---|---|---|---|
| Koala 🥇 Best Overall 2026 |
$1,050 | 120 nights | 10yr | 4.8/5 | View Deal → |
| Emma Best Value 2026 |
$1,149 | 100 nights | 10yr | 4.6/5 | View Deal → |
| Sleeping Duck 🥈 Best for Couples |
$1,399 | 100 nights | 10yr | 4.7/5 | View Deal → |
| Ecosa 🥉 Best Budget Pick |
$799 | 100 nights | 15yr | 4.5/5 | View Deal → |
| Ergoflex Best for Back Pain |
$1,395 | 100 nights | 7yr | 4.4/5 | View Deal → |
| Origin Best Hybrid Value |
$1,199 | 100 nights | 10yr | 4.4/5 | View Deal → |
Always look for at least 100 nights. Koala (120 nights) and Sleeping Duck (100 nights) offer some of the best trials available. A trial lets you test the mattress through different seasons including Australian summer.
A 10-year warranty is standard for quality mattresses. Ecosa offers 15 years, which is exceptional. Be wary of brands offering less than 5 years.
All-foam mattresses offer excellent motion isolation but can sleep warm. Hybrid mattresses use pocket springs under foam, improving airflow significantly — important for Australian summers.
Medium is most versatile for side and back sleepers. Stomach sleepers generally need firmer. If unsure, Ecosa lets you adjust firmness.
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