King Mattress

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 a wide 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, available 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.

See it, try it, buy with confidence

Here's the part the online-only brands can't match: instead of guessing from a screen, you can feel king mattresses in person first, across five South-East Queensland showrooms — Rocklea, Virginia, Bundall, North Ipswich and Beenleigh (ask which store has the model you want on display). Pick-up is available seven days a week, plus delivery free within 10 km* of our Rocklea warehouse on eligible items when you pay outright (not pay later), ground floor only.

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, Klarna, Latitude Interest Free and PayPal Pay in 4. 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

Explore more

• All Mattresses
• Single Mattresses
• King Single Mattresses
• Double Mattresses
• Queen Mattresses
• Super King Mattresses
• Memory Foam
• Pocket Spring
• Mattress in a Box
• SleepMaker
• King Bed Frames