Australian mattress shopping works best when you buy by size name + centimetres, not by overseas labels. On Darrah Opens, Giselle Cool Gel Foam 30 cm examples measure Single 91 × 190 cm, King Single 107 × 203 cm, Double 137 × 190 cm, Queen 153 × 203 cm and King 183 × 203 cm (all × 30 cm thick on those listings). Always confirm the exact cm on the product page — thickness (height) is separate from the size name.
Browse live stock in Furniture → Mattresses. Queen vs king room-fit detail: queen vs king mattresses Australia.
Australian mattress size chart (cm)
Figures below use Giselle Mattress Cool Gel Foam 30 cm listings as verified examples. Other series may differ slightly — read each page.
| AU size name | Example footprint (W × L) | Example product | Common use |
|---|---|---|---|
| Single | 91 × 190 cm | Giselle Cool Gel Foam 30cm Single | Kids, guests, bunks, compact rooms |
| King single | 107 × 203 cm | Giselle Cool Gel Foam 30cm King Single | Taller singles, teens, guest rooms |
| Double | 137 × 190 cm | Giselle Cool Gel Foam 30cm Double | Couples in small rooms / secondary beds |
| Queen | 153 × 203 cm | Giselle Cool Gel Foam 30cm Queen | Default couple size in many AU homes |
| King | 183 × 203 cm | Giselle Cool Gel Foam 30cm King | Extra width; same common length as queen |
Note: Queen and king share a common 203 cm length on these listings; king adds width (183 cm vs 153 cm). Double and single on this Cool Gel line use 190 cm length — measure sheets and frames accordingly.
Thickness is not the size name
The Cool Gel examples above are 30 cm thick with firmness listed as 6.5 / medium firm on those pages. The mattress collection also includes other heights (for example slim tight-tops and 15 cm cool-gel foams, plus taller pocket-spring / Euro-top models). A “queen” can be short or tall — always read W × L × H.
Other queen options on Darrah Opens include Giselle Bedding Memory Foam 15cm Queen, EasyDreamer Orthopaedic Euro Top Pocket Spring Queen, and firmer Giselle pocket-spring queens — confirm cm on each listing.
How to measure before you order
- Measure the existing base or frame inner dimensions if reusing one
- Measure wall-to-wall and subtract wardrobe doors, heaters and door swing
- Leave walkways beside the bed (especially if sizing up to king)
- Check mattress height against bedhead, under-bed drawers and any adjustable base limits
- Match AU sheet size to the mattress size name — US/UK names do not map cleanly
Size vs sleepers — quick picks
- Single / king single — kids, teens, spare rooms; king single adds length for taller sleepers
- Double — space-constrained couples or larger singles
- Queen — most common couple choice; widest model variety
- King — more shoulder room; confirm the room fits ~183 cm width plus bedside tables
Vacuum-packed Giselle mattresses often note expansion within 1 day after unpacking on these Cool Gel listings — lay flat on the base and wait for full loft before judging firmness.
Frames and matching names
If you pair with an Artiss bed frame, match the frame’s size name (Double / Queen / King) to the mattress size name and confirm load capacity on the frame listing. Size-up to king usually means new sheets and protectors.
Who this centimetre chart is for
Australian shoppers replacing a mattress, fitting a first apartment bed, or comparing Giselle and EasyDreamer queens without getting tripped by US/UK size names. Measure the room and the base before you fall in love with a king width.
Cool Gel 30 cm series notes (verified examples)
On the live Giselle Cool Gel Foam 30 cm pages, firmness is listed as 6.5 / medium firm, construction notes include cool-gel infused memory foam with a pocket-spring system, bamboo knitted fabric, and vacuum packaging that expands to shape within 1 day after unpacking. Thickness is 30 cm on those SKUs — separate from the size name.
When the double listing is thin online
If the Cool Gel double product endpoint is temporarily unavailable, keep the draft URL and confirm 137 × 190 cm (or the live figure) on the storefront before ordering sheets and protectors. Do not invent alternate dimensions.
Sheets, protectors and bases
AU queen sheets do not reliably fit a US queen. After you pick a size name, match protectors and an Artiss (or other) frame to the same AU name and check mattress height against bedhead and under-bed storage. Slim 15 cm cool-gel queens and taller Euro-top pocket-spring queens share a size name but not a profile.
FAQ
What size is an Australian queen mattress in cm?
Commonly 153 × 203 cm — as on the Giselle Cool Gel Foam 30cm Queen listing. Confirm every SKU.
What size is an Australian king mattress in cm?
Commonly 183 × 203 cm — as on the Giselle Cool Gel Foam 30cm King listing.
Is king single the same as single?
No. On the Cool Gel examples, single is 91 × 190 cm and king single is 107 × 203 cm.
Do US queen/king sizes match Australia?
Not reliably. Buy by Australian size name + cm on the Darrah Opens page.
How thick is the Giselle Cool Gel Foam 30 cm range?
30 cm on those listings, with firmness noted as 6.5 / medium firm.
What about a thinner Giselle queen?
See options such as the Giselle Bedding Memory Foam 15cm Queen — still a queen footprint, different height.
Where do I browse all mattress sizes?
How long do vacuum-packed Giselle Cool Gel mattresses take to expand?
Those listings note expansion to normal shape within 1 day after unpacking — lay flat on the base and wait before judging firmness.
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