Quick Answer: A double mattress in Canada measures 54" x 75" (137 x 191 cm) - 16 inches wider than a twin but 6 inches narrower than a queen. It is best suited to single adults in smaller rooms, teenagers, and guest bedrooms. The Restonic ComfortCare double is $980 with 980 coils. Double and full are the same size - different terms, identical dimensions.
In This Guide
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What Is a Double Mattress
The double mattress - also called a full - measures 54 inches wide by 75 inches long (137 x 191 cm). It sits between the twin (38" x 75") and the queen (60" x 80") in both size and price.
The names cause confusion. "Double" is standard Canadian terminology. "Full" is used more often in American listings. You will encounter both in Canadian retail, sometimes in the same store. They describe the same size. If a product listing says "full mattress" or "full/double," the dimensions are 54 x 75 inches.
The double is worth knowing about because it occupies a useful niche that most mattress marketing skips over. Queen has become the default assumption for anyone buying a mattress for an adult. But the queen is 6 inches wider than a double - a real difference in a 9-foot-wide room, which is common in older Ontario homes and apartment buildings. For the right buyer, the double is a practical choice that is neither a compromise nor a second option.
Double vs. Queen: The Real Trade-Off
Size Comparison: Double, Queen, King
| Size | Width | Length | Per Person (2 sleepers) | Typical Price Range |
|---|---|---|---|---|
| Twin | 38" | 75" | 38" (solo) | $200 - $900 |
| Double/Full | 54" | 75" | 27" per person | $350 - $1,100 |
| Queen | 60" | 80" | 30" per person | $500 - $2,000 |
| King | 76" | 80" | 38" per person | $1,000 - $4,000 |
The numbers tell part of the story. The queen is 6 inches wider and 5 inches longer than a double - a meaningful difference for a couple sharing the bed. For a single adult, the queen's extra width mostly goes unused. For someone in a room where those 6 inches of width matter to furniture placement and walking clearance, the double may be the right answer.
One detail often missed: the double and queen share the same length at 75 inches. No - that is not correct. The queen is 80 inches long and the double is 75 inches. That 5-inch length difference matters for taller sleepers (above approximately 5'10"). If you are buying for an adult over 5'10", the double's 75-inch length may be tight, and the queen's 80-inch length is worth considering.
The price difference between a quality double and a comparable queen is typically $100-$200. It is smaller than most people expect. The decision often comes down to room dimensions more than budget.
Who a Double Actually Suits
The double is often dismissed as a transitional size - something you buy before you can afford a queen. That framing misses a real set of buyers for whom the double is the right choice, not a fallback.
The Right Buyers for a Double
Single adults in small rooms. A double gives a solo sleeper 54 inches of personal space versus 38 on a twin. That extra 16 inches changes how the bed feels to sleep in - you can roll without hitting the edge. But the double does not dominate a small room the way a queen does.
Teenagers aging out of a twin. A teenager at 14-16 often outgrows a twin (especially in length) before they leave home. A double bridges the gap without requiring a full queen purchase that may not fit the room.
Guest rooms where the primary use is occasional single-adult guests. A double in a guest room is meaningfully more comfortable than a twin for an adult visitor and takes less floor space than a queen. For a room that serves double duty as an office or hobby space, that matters.
Couples in a temporary situation. Two people sharing a double is tight but workable for a short-term arrangement - a first apartment, a temporary living situation. It is not ideal for long-term couple sleep.
Brad, Owner, 40+ years of experience: "We sell doubles more than most stores because we have been here long enough to know who actually needs them. It is usually somebody in a room that used to have a double bed frame, or somebody in a Brantford apartment where the bedroom is genuinely small. The queen does not always fit, and the twin is too small. The double is the right answer that people talk themselves out of because they think it sounds like settling."
8 min read
What Doubles Cost Across Canada
The double sits between the twin and queen in price at most retailers, roughly $100-$200 above a comparable twin and $100-$200 below a comparable queen.
| Retailer/Option | Double Price Range | Notes |
|---|---|---|
| IKEA Canada | $350 - $700 | HAFSLO double $319. Budget-friendly, limited selection. Check IKEA-specific sheet sizing. |
| The Brick / Leon's | $500 - $1,200 | Wider selection. Flyer pricing. Exchange policy rather than refunds. |
| Sleep Country | $700 - $2,000 | Premium retail, broad range. Promo card offers common. |
| Costco Canada | Limited double selection | Costco focuses primarily on queen. Double SKUs are rare. |
| Mattress Miracle (Brantford) | $980 - $1,500+ | Restonic ComfortCare double: $980/980 coils. White glove delivery included. |
One thing worth noting: the double is a less common size than queen, and some retailers stock fewer double options or carry double only in their entry-tier models. If you have specific requirements (a particular firmness, a flippable model, a specific height), you may find fewer double choices than you would in queen. This is a real limitation of the size.
Room Size Requirements for a Double
The double's main advantage over the queen in Canadian homes is its reduced footprint. For rooms in older Ontario houses and apartment buildings where bedrooms were not designed around modern mattress sizes, those 6 inches matter.
| Room Size | Double Fit? | Queen Fit? | Notes |
|---|---|---|---|
| 8' x 10' | Workable with tight clearance | Very tight - limited to no walking clearance | Double is the better choice here |
| 9' x 10' | Comfortable with reasonable clearance | Works with minimal side clearance | Double provides noticeably better room usage |
| 10' x 10' | Excellent - plenty of clearance | Comfortable fit | Either works; choice comes down to personal preference |
| 10' x 12' and above | Either size works well | Either size works well | Room size is no longer the deciding factor |
The Canadian Mortgage and Housing Corporation (CMHC) reports that the average bedroom in a Canadian apartment or condominium is approximately 120-140 square feet. Many secondary bedrooms in Ontario row houses and semi-detached homes fall below this. For these spaces, the double is not a compromise - it is the correctly-proportioned choice.
Measure your room before committing to a size. Specifically: measure the wall where the headboard will sit, then calculate how much floor space remains on either side of the mattress. Ideally, you want 24-30 inches on the side you get out of bed on. A double in a 9-foot-wide room leaves approximately 33 inches of combined side clearance. A queen in the same room leaves approximately 21 inches combined.
What to Look For in a Double
Most of the same principles that apply to queen mattress quality apply to doubles. A few specifics worth noting:
Coil count. For a quality double, look for 600+ coils. The Restonic ComfortCare double carries 980 individually wrapped coils across a 54 x 75-inch surface. That is a higher coil density than many queen models at comparable price points. Per-square-inch coil density is a useful comparison metric when evaluating doubles against queens.
Edge support. Single adults using a double often sleep near the edge more than couples, because they spread across the whole surface. Perimeter edge support affects how much usable sleeping surface you have and how stable the mattress feels when you sit on the side.
Foam density (for foam-layer doubles). Research from the Journal of Orthopaedics and Traumatology (2021) found that mattress surface characteristics significantly affect spinal alignment, with medium-firm surfaces producing the best outcomes for adults without pre-existing back conditions. For foam doubles, look for comfort layer density of at least 1.5 lbs per cubic foot and base foam at 1.8 lbs per cubic foot or above.
Double-specific bedding. Sheets, duvets, and mattress protectors must be sized for double/full. Queen bedding will not fit well. Double-specific bedding is widely available in Canada but less prominently displayed than queen. Confirm sizing when purchasing. The Bamboo Plus Mattress Protector is available in double size and is the practical first purchase after any mattress.
Double Mattresses at Mattress Miracle
The Restonic ComfortCare double is $980 with 980 individually wrapped coils. The 980-coil count across a 54 x 75-inch surface is higher than many competing queen models in the same price range. Medium-firm, 10-year Restonic warranty.
For buyers wanting a flippable double with two firmness profiles, the Dream Catcher Flippable double by Sleep In is $750. This is a Canadian-made flippable that gives you a medium side and a firmer side, which is useful if your firmness preferences change over time or if two people with different preferences are sharing the bed.
The Restonit Glacier Peyto double at $1,000 is the rolled-delivery option in double size - suitable for adjustable bases and tight delivery situations where a folded roll-pack can navigate stairs and hallways more easily than a flat mattress.
We also carry the Double Charlotte Bedroom Set ($600) if you are furnishing a complete double room. For a complete bedroom furniture setup, we carry Lakewood solid wood furniture (hard to find in Brantford) and the Charlotte range, both in configurations suited to double frames.
Delivery includes white glove service throughout Brantford and the surrounding region - we set up the mattress on your frame, position it in the room, and remove all packaging. For older Ontario homes with narrow hallways and stairways, roll-pack options like the Restonit are worth discussing before you order.
Find Your Perfect Mattress at Mattress Miracle
We are a family-owned mattress store in Brantford, helping our community sleep better since 1997. Come try mattresses in person and get honest, no-pressure advice.
441 1/2 West Street, Brantford, Ontario
Call 519-770-0001Frequently Asked Questions
What is the difference between a double and a full mattress in Canada?
Double and full are the same size in Canada, both measuring 54 inches wide by 75 inches long (137 x 191 cm). "Full" is the American term; "double" is standard in Canadian retail. You may see either in product listings - they describe identical dimensions.
Is a double mattress big enough for two people?
A double gives each person about 27 inches of space, compared to 30 inches on a queen and 38 inches on a king. It can work for two small-framed people who sleep close together, but most adult couples find the double too narrow for comfortable nightly sleep over time. A double is generally better suited to a single adult than to a couple.
How much does a double mattress cost in Canada?
Double mattresses in Canada typically range from about $350 for basic foam options to $1,100 for quality hybrid models. The Restonic ComfortCare double is $980 with 980 individually wrapped coils. The price gap between a quality double and a comparable queen is generally $100-$200 less than most buyers expect.
Will queen sheets fit a double mattress?
Queen sheets will not fit a double mattress properly. A queen fitted sheet is 60 inches wide and will be 6 inches too wide for a 54-inch double, resulting in excess fabric that bunches. Double-specific sheets (labelled full/double) are the correct choice and are widely available at Canadian retailers.
What is the minimum room size for a double mattress?
A double mattress fits comfortably in a room of approximately 9 x 10 feet, leaving reasonable clearance on three sides. In a room of 8 x 10 or less, a double may work but will leave tight walking clearance. Measure the wall where the headboard will sit and calculate clearance on each side before deciding between a double and a twin.
Related Reading
- Twin Mattress Canada: What Kids and Guest Rooms Actually Need
- Mattress for a Small Bedroom Canada: Queen, Double, or Twin?
- King vs. Queen Mattress Canada: The Real Differences
- Shop Restonic Mattresses at Mattress Miracle
- Double Bed at The Brick Canada: What's Available and Is It Worth It?
Sources
- Caggiari, G., et al. (2021). What type of mattress should be chosen to avoid back pain and improve sleep quality? Review of the literature. Journal of Orthopaedics and Traumatology, 22(1), 51.
- Jacobson, B.H., et al. (2008). Grouped comparisons of sleep quality for new and personal bedding systems. Applied Ergonomics, 39(2), 247-254.
- Canadian Mortgage and Housing Corporation. (2024). Canadian Housing Observer: Unit Size Trends. CMHC Publications.
- Radwan, A., et al. (2015). Effect of different mattress designs on promoting sleep quality, pain reduction, and spinal alignment. Sleep Health, 1(4), 257-267.
- Canadian Sleep Society. (2024). Sleep environment guidelines for adults. Retrieved from canadiansleepsociety.ca
- Retail Dive. (2025). Canadian bedding market size distribution report. Retrieved from retaildive.com
Visit Our Brantford Showroom
We are located at 441½ West Street in downtown Brantford. Free parking available. Our team does not work on commission, so you get honest advice based on your needs.
Mattress Miracle - 441½ West Street, Brantford, ON - (519) 770-0001
Hours: Monday-Wednesday 10am-6pm, Thursday-Friday 10am-7pm, Saturday 10am-5pm, Sunday 12pm-4pm.
If you are trying to decide whether a double or queen is the right fit for your room, bring the room measurements when you come in. Talia can help you work through the layout and determine which size gives you the most usable space. Call (519) 770-0001 to arrange a visit.