Compare Australian single, king single, double, queen, king and super king mattress dimensions, plus room, frame and delivery checks.
Australian mattress names are familiar, but the centimetres matter. A queen mattress is not simply a “medium” bed, and the external size of a bed frame can be noticeably larger than the mattress it holds. Always plan from the manufacturer’s stated dimensions.
Use the size chart below as a common Australian reference, then verify the exact mattress and bed frame before ordering. Imported, antique, custom and heavily upholstered frames may not follow the usual footprint.
Quick answer: Common Australian mattress dimensions are approximately: single 92 × 188 cm, king single 107 × 203 cm, double 138 × 188 cm, queen 153 × 203 cm, king 183 × 203 cm and super king 203 × 203 cm. Specifications vary, so confirm both the mattress and the frame.
Common Australian mattress dimensions
The chart is a planning reference, not a substitute for the product specification. Length is especially important for taller sleepers, while width determines how much personal space remains when a bed is shared.
| Size | Approx. width | Approx. length |
|---|---|---|
| Single | 92 cm | 188 cm |
| King single | 107 cm | 203 cm |
| Double | 138 cm | 188 cm |
| Queen | 153 cm | 203 cm |
| King | 183 cm | 203 cm |
| Super king | 203 cm | 203 cm |
Allow for the bed frame, not just the mattress
A bed frame can add width at side rails and length at the headboard or footboard. Upholstered wings, a deep bedhead, storage drawers and a bench at the foot all expand the working footprint. Check the external dimensions of the specific model in the bedroom furniture collection.
Mark the full frame on the floor with removable tape. Include room for bedside tables, wardrobes, drawers and the normal route from the door. Test whether a storage mechanism or drawer can open without moving another piece.
Choose for the sleepers and the room
A larger mattress offers more sleep surface, but a bedroom also needs circulation and usable storage. Consider who sleeps there, whether children or pets sometimes join, sleeper height, mobility, and whether two people have different comfort preferences.
Do not upgrade size by name alone. Compare the usable room after the frame, not the empty room. In a smaller bedroom, a well-proportioned queen with clear paths may function better than a king squeezed against a wall.
Check mattress and base compatibility
Match the nominal size, then confirm support requirements, weight limits and base type. Some mattresses need particular slat spacing, a centre support or a compatible adjustable base. Follow the mattress and frame instructions; an unsuitable base can affect comfort, performance and warranty conditions.
If storage is important, compare the mechanism and mattress requirements in the storage bed buying guide. Measure the mattress height too, because a deeper mattress changes overall bed height and can hide more of a decorative headboard.
Plan delivery before choosing the largest size
Mattresses may flex, roll or arrive boxed, while bed frames arrive as multiple components. Ask for the largest transport piece and packed dimensions. Measure doors, stairs, lift cabins and tight turns rather than assuming a flat-pack frame will solve every access problem.
Use the delivery measurement checklist and confirm whether building management requires a lift booking or loading window.
Before you buy: practical checklist
- Verify the mattress dimensions on the product specification.
- Verify the bed frame’s internal size and external footprint.
- Tape the frame, bedside tables and opening clearances on the floor.
- Confirm base, slat, centre-support and weight requirements.
- Measure the largest delivery component and complete access route.
- Save the mattress and frame care and warranty documents.
Products to compare
Use these live product pages to compare current dimensions, materials and features with the guidance above. Confirm stock, finish and delivery details before ordering.
Frequently asked questions
Are Australian and US queen mattresses the same size?
No. International names can refer to different dimensions. Use centimetres from the exact product specification rather than relying on the size name.
Will any queen mattress fit any queen bed frame?
Not automatically. Match stated dimensions and check the required support system, slat spacing, centre rail, mattress depth and any adjustable-base restrictions.
Is a king mattress longer than a queen in Australia?
Common Australian king and queen mattresses are both about 203 cm long; the king is wider. Verify the manufacturer’s dimensions because tolerances and special sizes vary.
Sources and further reading
Use these references alongside the care, assembly and safety instructions supplied with your specific product.
See the options in person
Measure your room, then compare bed-frame proportions in the Queen Style bedroom collection or at the Thomastown showroom. Confirm the exact frame and mattress specifications before ordering.
