Quick Answer: A double (full) mattress in Canada measures 54 inches wide by 75 inches long (137 cm x 191 cm). It fits one adult comfortably or two in a pinch. A double is NOT the same as a queen, which is 6 inches wider and 5 inches longer. Mattress Miracle carries double mattresses from $400 to $3,500+ at 441 1/2 West Street in Brantford.
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The double mattress (also called "full size" in American terminology) is one of the most misunderstood mattress sizes in Canada. People assume it is the same as a queen. It is not. Others think it is big enough for two adults to sleep on every night. It can be, but it is tight.
At Mattress Miracle in Brantford, we sell doubles primarily for single adults, teenagers moving out of a twin, and guest rooms. Here is the complete size guide from our team at 441 1/2 West Street, where we have been fitting mattresses to Canadian bedrooms since 1997.
Double Bed Dimensions: Every Measurement
Double (Full) Mattress Dimensions
- Width: 54 inches / 137 cm / 4 feet 6 inches
- Length: 75 inches / 191 cm / 6 feet 3 inches
- Surface area: 4,050 square inches (28.1 square feet)
- Per-person width (two adults): 27 inches each (69 cm)
At 27 inches per person when sharing, a double gives each adult less width than a crib mattress gives a baby (28 inches). That comparison puts the double's limitations into perspective for couples. For a single adult, though, 54 inches of width is generous and comfortable.
Is a Double the Same as a Full?
Yes. "Double" and "full" refer to the exact same mattress size: 54 x 75 inches. In Canada, the term "double" is more commonly used. In the United States, "full" is the standard term. When you see "full size mattress" on an American website, it is the same dimensions as a Canadian double.
This also means full size bed frames, full size sheets, and full size mattress protectors all fit a double mattress perfectly. The terms are interchangeable across all bedding and accessories.
Double vs Queen: The Real Difference
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Double vs Queen Side by Side
- Double: 54" x 75" (137 x 191 cm)
- Queen: 60" x 80" (152 x 203 cm)
- Width difference: Queen is 6 inches wider
- Length difference: Queen is 5 inches longer
- Price difference: Queen typically costs $50 to $150 more
The queen is noticeably larger in both dimensions. The 6 extra inches of width means 3 more inches of personal space per person when sharing. The 5 extra inches of length means anyone over 5 feet 10 inches will not have their feet hanging off the edge.
Our recommendation: if two adults will share the bed regularly, go queen. The price difference is small compared to the comfort improvement. If the bed is for one person, a double is perfectly adequate and saves both money and floor space.
Double Beds in Brantford Bedrooms
A double mattress fits well in bedrooms as small as 9 x 9 feet, which is common in older Brantford homes and basement bedrooms. It is a popular choice for second bedrooms, home offices that double as guest rooms, and teenagers outgrowing their twin. At Mattress Miracle (441 1/2 West Street), we carry doubles across every price range and can help you find one that fits your space and budget.
Double vs Single (Twin): When to Size Up
A twin mattress measures 38 x 75 inches. A double is 16 inches wider (54 inches) but the same length. The upgrade from twin to double makes sense when:
- A teenager or young adult wants more room to spread out
- The bedroom is too small for a queen but can fit a double
- You are furnishing a guest room where couples might occasionally stay
- An adult is moving from a shared living situation and wants a proper-sized bed
The double is the sweet spot between the narrow twin and the larger queen. It gives a single adult generous sleeping space without requiring the bedroom footprint of a queen.
Who Should Buy a Double Mattress?
Double Is Right For
- Single adults: 54 inches of width is comfortable for one person of any body type
- Teenagers: A meaningful upgrade from a twin that lasts through university years
- Guest rooms: Accommodates one guest comfortably, two in a pinch
- Small bedrooms: Fits rooms as small as 9 x 9 feet with walking space
- Budget shoppers: Double mattresses cost $50 to $150 less than queens
Double Is NOT Ideal For
- Couples sharing nightly: 27 inches per person is tight. Go queen.
- Tall sleepers: At 75 inches long, anyone over 5'10" may feel cramped. Queen or king adds 5+ inches of length.
- Restless sleepers: Less width means more partner disturbance.
Double Mattress Options at Mattress Miracle
We carry double mattresses across every construction type:
- Budget doubles ($400 to $700): All-foam and basic coil options for guest rooms and first apartments
- Mid-range doubles ($700 to $1,500): Pocketed coil and hybrid options including the Restonic ComfortCare line
- Premium doubles ($1,500+): Restonic Revive and other luxury options
- Flippable doubles: Canadian-made double-sided mattresses that last 10 to 15 years
Double bed sheets and accessories are widely available and typically the same price as twin sizes. We carry double sheets, protectors, and double bed frames at Mattress Miracle.
The "Full Size" History
Before queen and king mattresses became widely available in the 1950s and 1960s, the double was the standard adult bed size in Canada. "Full size" literally meant the full-sized bed for grown-ups, as opposed to the twin/single for children. As homes grew larger and Canadians demanded more sleeping space, the queen overtook the double as the most popular size. Today, doubles account for roughly 15 to 20% of mattress sales at Mattress Miracle, down from the majority they once held.
Frequently Asked Questions
Is a double bed the same as a queen?
No. A double measures 54 x 75 inches, a queen measures 60 x 80 inches. The queen is 6 inches wider and 5 inches longer. They require different sheets, frames, and protectors. For two adults, the queen is significantly more comfortable.
Is a full size bed the same as a double?
Yes. "Full" and "double" are different names for the same mattress size: 54 x 75 inches. "Double" is the common Canadian term, "full" is the American term. All bedding, frames, and accessories are interchangeable.
What are double bed dimensions in feet?
A double bed is 4 feet 6 inches wide by 6 feet 3 inches long. In metric, that is 137 cm x 191 cm.
How big is a full size bed compared to a twin?
A full (double) is 54 inches wide, a twin is 38 inches wide. The full is 16 inches wider but the same 75 inches long. A full gives a single adult significantly more room to sleep comfortably.
Where can I buy a double mattress in Brantford?
Mattress Miracle at 441 1/2 West Street carries double mattresses from $400 to $3,500+ across all construction types. We have been here since 1997 and carry the widest selection of doubles in the Brantford area. Call (519) 770-0001 to check current stock.
Find the Right Double Mattress
We are a family-owned mattress store in Brantford, helping our community sleep better since 1997. Whether you need a double for a teenager's room, a guest bedroom, or your own space, come try them in person. Honest advice, no pressure.
441 1/2 West Street, Brantford, Ontario
Call 519-770-0001