King Size Mattresses Australia

Make space for your preferred sleep setup

Compare king size mattresses for your bedroom, including foam, spring, hybrid and reversible models. Explore the listed firmness, construction and depth, with standalone mattresses and selected offers that explicitly include a bed frame or other components.

Choose by measurements, not just the size name

Check your frame’s internal dimensions against the exact mattress measurements in the individual listing. King, king single and super king are different sizes. Measure room access and the space around your bed, and check the assembled dimensions if you are choosing a bundle.

Compare the specified foam layers, spring design and firmness with your preferences. Check the manufacturer’s base requirements, mattress depth, sheet fit and care instructions. Read each package list carefully so you know whether you are buying a mattress alone or a complete offer.

Frequently asked questions

Will a king mattress fit any king bed?

Check the exact dimensions of both products and the frame’s requirements. Do not assume size labels alone guarantee a fit.

Is king single or super king the same size?

No. These are separate sizes. This collection focuses on king mattresses; compare individual dimensions before ordering.

How should I choose firmness?

Compare the firmness specified for each model alongside its construction and your personal preferences. Firmness descriptions can differ between models.

Does greater mattress depth mean a better choice?

Depth is one factor rather than a quality guarantee. Check it against your bed frame, preferred bed height and fitted-sheet measurements.

Does the mattress include a frame or pillows?

Only where the individual listing explicitly includes them. Read the package contents and selected option before ordering.

What should I check before unpacking?

Confirm the model and size, then follow its supplied unpacking, setup and care instructions. Any expansion or setup guidance is model-specific.

Complete your bedroom plan

Explore all mattresses, compare king single mattresses, or browse bed frames and bed bases. Return to Bedroom Furniture, explore Home & Furniture, or visit our Home & Furniture Guide.