The most room two sleepers can get — every feel and build, at warehouse pricing.
Choosing the Right King Mattress
A king is the size you buy when space is the whole point — but a bigger bed only delivers if it fits the room and matches how you sleep. This guide covers who a king suits, whether it'll fit, the builds we stock, how to land on the right firmness, and how it compares to a queen.
Who a king mattress suits best
- Couples who want maximum room: 30 cm more width than a queen — enough that two people never compete for space, even when one moves a lot.
- Restless-partner households: the extra width plus a pocket-spring build keeps one person's movement from waking the other.
- Families with early risers: room for kids or pets to climb in without anyone losing sleep.
- Taller and larger builds: generous width with the full 203 cm length for a properly unrestricted sleep.
One honest note: a king is the widest standard size and needs a genuinely large bedroom with clear space to walk around it. If your room is average-sized or tight, a queen will serve you better — we'd rather you bought the size that fits the room than the biggest one.
King mattress types we stock
At king width the build matters for reasons a smaller bed never faces: a wider span gives a partner's movement further to travel, a much larger surface traps more body heat across warm, humid Brisbane and Gold Coast nights, and the sheer size makes a king genuinely awkward to move. The right type answers all three.
- Pocket spring: close to essential rather than optional at this width — independently-wrapped springs stop a restless partner's movement carrying the full 183 cm across to the other side.
- Memory foam & cooling gel: a king's large surface holds the warmth of two bodies; gel-infused foam contours each sleeper while shedding that built-up heat through humid South-East Queensland nights.
- Latex hybrid: responsive latex over a spring core — springy rather than sink-in, and naturally breathable, which counts for more on a surface this size.
- Bonnell spring: a firmer value innerspring — the most budget-friendly way into a king without dropping back to a smaller size.
- Pillow top, Euro-top & memory-foam hybrid: a plush comfort layer over a supportive core — cushioned softness that still holds its shape right across the full width.
- Mattress in a box: a genuine advantage at king size, not just a convenience — a traditional king is hard to get through doorways and up stairs, a boxed one isn't.
- SleepMaker: a recognised Australian brand, stocked in king for shoppers who want a familiar manufacturer.
Firmness — find your feel
King width changes the firmness conversation. With this much room, two sleepers feel far less of each other's movement, so the usual couples compromise eases — each person can sit closer to their own preference rather than splitting the difference.
The bigger consideration at this size is build: many people move up to a king because they're taller or larger, and heavier builds generally need firmer support to stay properly aligned. Sleeping position still sets the starting point — softer for side sleepers, firmer for back and stomach sleepers.
- PlushSoft and cushioned — suits side sleepers and lighter builds who want pressure relief. See our soft & plush range.
- MediumBroad, accommodating feel — and with king width, an easier shared choice than on a narrower bed. See medium firm.
- FirmSolid, supportive — the common pick for taller or heavier builds and for back and stomach sleepers. See our firm range.
- Extra firmMaximum support and minimal give — for heavier sleepers or anyone who wants a very firm surface. See extra firm.
King or queen?
A king is 183 × 203 cm; a queen is 153 × 203 cm — same length, but the king is 30 cm wider.
Choose a king when you have the room and want maximum personal space; choose a queen when the bedroom is average-sized or you want the size that fits the widest range of homes. Want even more room and have the space for it? See our super king range.
Why buy your king mattress from A2Z
The A2Z Furniture is a family-run Australian business established in 2013. A king is where retail markup usually bites hardest — it's the size most often sold at a premium. Because we import directly and sell from our own Brisbane warehouse, that premium simply isn't there: the saving is real, not a sale gimmick.
See it, try it, buy with confidence
Here's the part the online-only brands can't match: instead of guessing from a screen and waiting out a trial period, you feel the exact king mattress in person first, across five South-East Queensland showrooms — Rocklea, Virginia, Bundall, North Ipswich and Beenleigh. Stock is held with pick-up seven days a week, plus Free Local Delivery on eligible orders from Rocklea.
Every mattress carries a manufacturer's warranty (the period varies by model — check the product page) — see our warranty policy — and you can spread the cost interest-free with Afterpay, Zip, Latitude, Klarna and PayPal. Verified customer reviews are shown on each product to help you compare. Prefer to talk it through? Call our team on 1300 781 990.
King Mattress FAQs
What are the dimensions of a king mattress in Australia?
An Australian king mattress is 183 × 203 cm — the same length as a queen but 30 cm wider. For a full comparison of every Australian size, the room size a king needs and a king-vs-queen breakdown, see our Australian bed size guide.
How much does a king mattress cost at A2Z?
King mattresses start from around $179 for a basic Bonnell spring model, rising with the type and comfort layers — pocket spring, memory foam, latex hybrid, pillow top, Euro-top and memory-foam hybrid. The product grid above shows current pricing for each. Interest-free payment is available through Afterpay, Zip, Latitude, Klarna and PayPal.
Will a king mattress fit my room?
A king needs a genuinely large bedroom with clear space to walk around the bed — it's the widest standard size. As a rough guide it suits a main bedroom that comfortably exceeds a queen setup with room to spare. If your room is average-sized or tight, a queen is the better fit. Our bed size guide has room-size detail.
What's the difference between a king and a queen mattress?
A king is 183 × 203 cm; a queen is 153 × 203 cm — same length, but a king is 30 cm wider and needs a larger room. Browse the queen range or compare all sizes in our bed size guide.
Is a king good for couples with a restless partner?
Yes — it's one of the main reasons people size up. The extra width gives each person their own space, and a pocket-spring build isolates movement so one person turning over doesn't carry across the bed.
Can I see and test king mattresses in person before I buy?
Yes — and we'd encourage it. You can try the exact king mattress at any of our five South-East Queensland showrooms: Rocklea, Virginia, Bundall, North Ipswich and Beenleigh. Feeling the firmness in person beats guessing from a screen.
Do you deliver king mattresses, or can I pick one up?
Both. Stock is held in our Brisbane (Rocklea) warehouse with pick-up seven days a week, and Free Local Delivery is available on eligible orders from Rocklea — see our delivery details. A king is bulky, so we'd suggest two people for handling — mattress-in-a-box models are far easier to move yourself.