Quick Answer: A double mattress in Canada measures 54 inches wide by 75 inches long (137.2 cm x 190.5 cm). Double and full are the same size, just different names. It suits solo adults and teens, and fits comfortably in rooms as small as 9 x 10 feet.
In This Guide
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The double is one of Canada's most misunderstood mattress sizes. People searching for double bed size Canada often run into conflicting information because the exact same mattress gets called a "double" by some retailers and a "full" by others. This guide clears that up and covers everything else you need to know: dimensions, room fit, bedding, and who this size actually suits.
Double Mattress Dimensions in Canada
| Measurement | Inches | Centimetres | Feet |
|---|---|---|---|
| Width | 54" | 137.2 cm | 4 ft 6 in |
| Length | 75" | 190.5 cm | 6 ft 3 in |
| Typical depth | 8"–14" | 20–36 cm | - |
One thing worth noting is that double mattresses tend to run slightly slimmer in profile than queen models. Most double mattresses you will find today are 8 to 12 inches deep. If you are buying a deep-pocket fitted sheet for a thick double mattress (14 inches or more), confirm the pocket depth before purchasing.
Talia, Showroom Specialist: "A lot of parents come in looking for a double for their teenager's room and are surprised at how generous the length is. At 75 inches, it handles most teenagers comfortably. The width is snug if you are tall and tend to sleep with your arms out, but for a single sleeper it is plenty of room."
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Double vs Full: Are They the Same?
Yes. A double and a full are exactly the same mattress. Both measure 54 inches wide by 75 inches long. The two names come from different eras of the industry: "full" was the American term and "double" was more common in Canada and the UK. Today, both terms are used interchangeably, and many retailers list it as "full/double" to cover both.
If a retailer lists a "full" mattress at 54 x 75 inches and a "double" at the same dimensions, they are the same product. There is no sizing difference between them. Our article on whether double is the same as full covers the history of this naming in more detail.
Why the Name Confusion Exists: "Double" originally implied "double the size of a twin." A twin is 38 inches wide, and a double at 54 inches is 16 inches wider, which is not quite double. The "double" name stuck anyway, and the "full" label arrived from American furniture trade terminology in the mid-20th century. Both names refer to the same 54 x 75-inch mattress.
How Double Compares to Other Canadian Mattress Sizes
| Size | Width (in) | Length (in) | Width (cm) | Length (cm) | vs Double |
|---|---|---|---|---|---|
| Twin | 38" | 75" | 96.5 cm | 190.5 cm | 16" narrower, same length |
| Twin XL | 38" | 80" | 96.5 cm | 203.2 cm | 16" narrower, 5" longer |
| Double / Full | 54" | 75" | 137.2 cm | 190.5 cm | - |
| Queen | 60" | 80" | 152.4 cm | 203.2 cm | 6" wider, 5" longer |
| King | 76" | 80" | 193 cm | 203.2 cm | 22" wider, 5" longer |
The double is 6 inches narrower and 5 inches shorter than a queen. That difference in width matters for two adults: a queen gives each person 30 inches of sleep space, while a double gives each person only 27 inches, which is less than a single twin. Most sleep professionals do not recommend a double for two adults if comfort is the priority.
Room Size Requirements for a Double Mattress
The double's smaller footprint is one of its genuine advantages. It fits into rooms where a queen simply will not, which makes it a practical choice for older Canadian homes with smaller secondary bedrooms. Pairing it with the right double bed frame keeps the overall footprint manageable.
| Room Use | Minimum Room Size | Notes |
|---|---|---|
| Double bed only (tight) | 8 ft x 9 ft (2.4 x 2.7 m) | Very minimal clearance, manageable for occasional use |
| Double bed, comfortable | 9 ft x 10 ft (2.7 x 3 m) | 24" clearance on sides - recommended minimum |
| Double bed + nightstands | 10 ft x 10 ft (3 x 3 m) | Room for a nightstand on each side |
| Double bed + dresser + wardrobe | 10 ft x 12 ft (3 x 3.7 m) | Full bedroom furniture, comfortable circulation |
Many secondary bedrooms in Brantford's older housing stock run 9 x 10 or 9 x 11 feet. A double fits these rooms more comfortably than a queen, leaving room for at least a small dresser and a walking path.
Bedding for a Double Mattress
Double bedding is widely available at all Canadian retailers. Double and full labels are interchangeable on packaging, so sheets marked "full" fit a double mattress without any issue.
| Bedding Item | Standard Double / Full Size | Notes |
|---|---|---|
| Fitted sheet | 54" x 75" + pocket depth | Standard pocket (12") fits most doubles; deep-pocket for 14"+ mattresses |
| Flat sheet | 81" x 96" | Allows tuck-in on sides and foot |
| Duvet / comforter | 80" x 86" | Some brands offer 86 x 86 for extra drape |
| Duvet cover | Labelled "double" or "full" | Same size - either label fits |
| Mattress protector | 54" x 75" | Match depth rating to your mattress thickness |
Who a Double Fits Best
The double is often the most practical choice in specific situations. Here is an honest breakdown:
| Situation | Double? | Better alternative |
|---|---|---|
| Single adult, average height (under 6') | Yes, generous for one | - |
| Teenager (growing) | Yes, fits most teens well | Twin XL if very tall |
| Guest room (occasional use) | Yes, works well | Queen if budget allows |
| Couple sharing nightly | Not recommended | Queen minimum for two adults |
| Studio apartment with limited space | Yes, best size for tight rooms | - |
| Replacing a twin, wanting more room | Yes, practical upgrade | Queen if room allows |
For a full comparison of the size step-up, see our double vs queen guide. If you are trying to decide between a double and a twin, our full size vs twin comparison covers that trade-off.
At Mattress Miracle, we carry doubles in several Restonic and Sleep In configurations. The Restonic ComfortCare Double uses 980 coils and is a solid, durable choice for a teenager's room or a guest room. Come in and see what is on the floor, or call Talia at (519) 770-0001 to check current stock.
Double or queen? Mattress Miracle at 441½ West Street in Brantford carries both. A double is 54 x 75 inches, a queen is 60 x 80 inches. If two adults share the bed, a queen gives each person 30 inches of width versus 27 inches with a double. That difference matters. Brad can help you measure your bedroom to see which size fits best. Call (519) 770-0001.
Shop This Topic at Mattress Miracle
Popular picks at Mattress Miracle:
- Restonic ComfortCare Dalton and Albany
- Whitney double-sided bamboo mattress
- Somnia 3.0 neck support pillow
Or explore the full mattress range in our Brantford showroom.
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 size are double mattresses in Canada?
A double mattress in Canada measures 54 inches wide by 75 inches long (137 cm by 190 cm). This is identical to a "full size" mattress - the terms are interchangeable. Double is the Canadian and British term; full is the American term. All bedding labelled "double" and "full" fits the same mattress.
What are the dimensions of a double murphy bed?
A double murphy bed (wall bed) folds out to 54 inches wide by 75 inches long - the same footprint as a standard double mattress. The cabinet depth when open is typically 12 to 14 inches (the thickness of the mattress plus frame). When folded up against the wall, the cabinet projects about 16 to 18 inches from the wall surface. Room clearance: you need at least 7.5 feet of vertical clearance and about 6 to 7 feet of floor space in front of the bed to use it comfortably when extended.
What double size bed sets are available in Canada?
Double size bed sets (sometimes labelled "full size") include fitted sheet (54" x 75" + pocket depth), flat sheet (81" x 96"), and usually two standard pillowcases. Complete bed sets add a duvet cover or comforter. We carry double-size options from our natural bedding collection - the Versaille Egyptian Cotton Sheet Set ($112) and Bamboo Linen Fitted Sheet ($92) are both available in double. Call 519-770-0001 to confirm current stock in your size.
What are the dimensions of a double bed in Canada?
A double mattress in Canada measures 54 inches wide by 75 inches long. In metric, that is 137.2 cm wide by 190.5 cm long, or approximately 4 feet 6 inches by 6 feet 3 inches. These dimensions are the same whether the mattress is labelled "double" or "full" - both terms refer to the exact same size.
What is the width of a double bed in cm?
A double bed is 137.2 cm wide (54 inches). In feet, that is 4 feet 6 inches. This is 15.2 cm narrower than a queen (152.4 cm) and 40.7 cm wider than a twin (96.5 cm).
Is double the same as full in Canada?
Yes. Double and full are the same mattress size: 54 inches x 75 inches (137 x 190 cm). The two names come from different naming traditions - "double" was more common in Canada and "full" in the United States. Today, Canadian retailers use both terms interchangeably, and sheets labelled "full" will fit a double mattress without issue.
What is the minimum room size for a double bed?
A double bed fits comfortably in a room as small as 9 feet by 10 feet (approximately 2.7 x 3 metres), which gives you about 24 inches of clearance on both sides. You can fit it in a 8 x 9-foot room in a pinch, but it will feel cramped. Adding a dresser or wardrobe requires at least a 10 x 10-foot room.
Can two adults sleep in a double bed?
Two adults can sleep in a double, but it is not comfortable for regular shared use. At 54 inches wide, each person has about 27 inches of space, which is less than a single twin. For a couple who shares a bed nightly, a queen (60 inches) is the recommended minimum and gives each person a more comfortable 30 inches of width.
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 shopping for a double for a teenager's room or a guest bedroom, come in and try the floor models. We can also show you why a few extra feet of room might be worth stepping up to a queen, and let you decide for yourself. We have been helping Brantford families find the right fit since 1997.