Quick Answer: A double bed measures 54 inches wide by 75 inches long (137 cm x 190 cm). In Canada, double and full are the same size. The double is 15 inches wider than a twin and 6 inches shorter and narrower than a queen. It suits solo adults, guest rooms, and smaller bedrooms under 12 x 12 feet.
In This Guide
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Exact Double Bed Dimensions: Inches and Centimetres
The double bed in inches measures exactly 54 inches wide by 75 inches long. In metric, that works out to 137 centimetres wide by 190 centimetres long. These measurements apply to the mattress itself. Your bed frame or platform will typically add 2-4 inches to each dimension.
| Measurement | Inches | Centimetres | Feet |
|---|---|---|---|
| Width | 54" | 137 cm | 4.5 ft |
| Length | 75" | 190 cm | 6.25 ft |
| Surface area | 4,050 sq in | 26,090 sq cm | 28.1 sq ft |
These are industry-standard dimensions used by virtually all mattress manufacturers in North America. Whether you're buying Canadian-made or imported, a double labelled "54 x 75" will fit a standard double frame.
Why 75 Inches? The History of the Double Bed Length
The 75-inch length for double and twin mattresses dates to early 20th-century North American manufacturing standards, when the average adult height was several inches shorter than today. The Canadian Chiropractic Association and the Sleep Foundation both recommend that a mattress be at least 4-6 inches longer than the sleeper's height. At 75 inches, a double is suitable for sleepers up to about 5'11" (180 cm). If you're taller, a queen (80 inches / 203 cm) provides the additional length you need without compromising sleep posture.
Full Mattress Size Comparison Chart
Seeing how a double fits relative to other common sizes helps clarify where it belongs in your decision. Here is every standard North American mattress size with exact measurements in both inches and centimetres.
| Size Name | Also Called | Width (in) | Length (in) | Width (cm) | Length (cm) | Surface Area (sq ft) |
|---|---|---|---|---|---|---|
| Twin | Single | 38" | 75" | 97 cm | 190 cm | 19.8 sq ft |
| Twin XL | Single XL | 38" | 80" | 97 cm | 203 cm | 21.1 sq ft |
| Double | Full | 54" | 75" | 137 cm | 190 cm | 28.1 sq ft |
| Double XL | Full XL | 54" | 80" | 137 cm | 203 cm | 30 sq ft |
| Queen | Standard Queen | 60" | 80" | 152 cm | 203 cm | 33.3 sq ft |
| King | Eastern King | 76" | 80" | 193 cm | 203 cm | 42.2 sq ft |
| California King | Western King | 72" | 84" | 183 cm | 213 cm | 42 sq ft |
A few things to note from the chart. The double is the same length as a twin (75"). It's 16 inches wider. The queen is 6 inches wider and 5 inches longer than a double. That extra length matters if anyone in your household is close to 6 feet tall.
Double Beds in Brantford and Surrounding Area Homes
If you live in one of Brantford's older neighbourhoods, from the Eagle Place area to Dufferin Avenue and north Brantford, you may already know that secondary bedrooms in those homes can be tight. Many measure 10 x 10 feet or 10 x 12 feet. A double at 54 x 75 inches fits comfortably in a 10 x 10 room with clearance on each side. A queen, at 60 x 80 inches, starts to feel snug. Our team at Mattress Miracle works with customers from Paris, Mount Pleasant, St. George, and Cambridge who face the same room-size constraints. Knowing your exact bed dimensions before you shop saves time and prevents returns.
Minimum Room Size for a Double Bed
Interior designers generally recommend at least 24 to 30 inches of walkway clearance on each open side of a bed, and 18 inches at the foot. Using those guidelines, here is what room size you need for a double mattress with comfortable clearance.
| Clearance Level | Minimum Room Width | Minimum Room Length | Notes |
|---|---|---|---|
| Comfortable (30" each side) | 9.5 ft (114") | 10.25 ft (123") | Easy movement, dresser possible |
| Adequate (24" each side) | 8.5 ft (102") | 9.75 ft (117") | Tight but functional |
| Minimum (18" one side) | 7.5 ft (90") | 9.25 ft (111") | Works with bed against one wall |
These room width measurements include the 54-inch (4.5 ft) mattress width plus clearance on both sides. For the length, they include the 75-inch mattress plus 18 inches at the foot for a wardrobe or dresser access.
In practice, a 10 x 10 bedroom works well for a double, especially when the bed is positioned against one wall. A 9 x 9 room is tight but not impossible with a minimal bed frame.
Talia, Showroom Specialist: "We always ask customers to measure their room before they fall in love with a size. It's easy to overestimate how much space you have. Take the measurements, write them down, bring them in. We'll help you figure out what works."
Double vs Full: Are They the Same?
Yes, completely. In Canada and the United States, "double" and "full" refer to the same mattress size: 54 inches wide by 75 inches long. The terms developed in parallel as different regions used different names, and both stuck.
You may occasionally see "full XL" listed by some retailers. That's 54 inches wide by 80 inches long, matching the queen's length but not its width. Full XL is uncommon in Canada and not widely stocked. If you see it, confirm the dimensions before ordering sheets or a frame.
Buying Sheets for a Double Bed
Double and full-size sheets are interchangeable. Look for fitted sheets labelled "double/full" with a pocket depth that matches your mattress thickness. Standard mattresses are 8-12 inches tall; pillow-top or foam models can be 12-16 inches. Deep-pocket sheets (with 14-16 inch sides) fit thicker mattresses without pulling off the corners during the night.
Who Does a Double Bed Suit?
The double is a solid choice in several situations. It's not the right fit for everyone, and knowing where it excels helps you decide with confidence.
A Double Bed Works Well For:
- Solo adult sleepers under 5'11": The 75-inch length is adequate for most adults, giving several inches of clearance above and below.
- Guest rooms: Comfortable for occasional visitors without the cost and footprint of a queen.
- Teenagers transitioning from a twin: A meaningful upgrade in space without the jump to a full adult queen size.
- Small bedrooms: When the room genuinely cannot accommodate a queen without feeling like a furniture showroom.
- Budget-conscious buyers: Double mattresses and bed frames are typically $100-$300 less than the equivalent queen.
- Short-term housing: Students, renters moving between smaller apartments, or anyone not in their permanent space.
A Double Bed May Not Work For:
- Couples who both sleep as full-width sleepers: At 27 inches per person, it's tight for two adults who move around.
- Sleepers over 6 feet tall: Your feet may hang off the 75-inch mattress edge, especially if you use a thick pillow that pushes you down the bed.
- Rooms planned as a master bedroom: A double can feel undersized as a long-term adult sleep space.
- Side sleepers with shoulder width issues: Less surface area means less room to adjust position without rolling too close to an edge.
If you're weighing the decision between sizes, our guide on double bed vs single bed walks through every relevant factor including room size, budget, and who each size actually suits.
Double Mattress Options at Mattress Miracle
At our Brantford showroom, we carry the Restonic ComfortCare in double size, which uses 980 individually wrapped coils. Each coil responds independently, so the support conforms to your body shape without transferring motion across the mattress.
We also carry the Sleep In collection, which is Canadian-made and flippable. Flippable mattresses last considerably longer than one-sided models because you rotate the support surface, distributing wear evenly. Many of our double-size customers who are setting up a spare room or a teenager's bedroom choose the Sleep In precisely because it holds up well over years of lighter use.
| Model | Size | Coil Count | Type | Notes |
|---|---|---|---|---|
| Restonic ComfortCare | Double | 980 | Individually wrapped coils | Best value for support and durability |
| Sleep In (flippable) | Double | Varies by model | Flippable, Canadian-made | Extended lifespan, guest room favourite |
Call Brad directly at (519) 770-0001 to check current stock and availability on double-size models. We deliver to Brantford and surrounding areas including Paris, St. George, Cambridge, Guelph, Hamilton, and further across Ontario.
If you're buying a bed-in-a-box style double online, our guide on double bed in a box covers the top Canadian brands, trial periods, and what to expect during setup. And if you need to know about slat requirements for your frame, see our double bed slats guide.
Shop: Shop Our Mattress Collection
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 are the exact double bed dimensions in inches?
A double bed measures 54 inches wide by 75 inches long. In centimetres, that's 137 cm x 190 cm. The frame adds roughly 2-4 inches on each side and at the ends, so account for that when measuring your room.
Is a double bed the same as a full-size bed?
Yes. "Double" and "full" are two names for the same mattress size: 54 x 75 inches. The two terms developed regionally in North America and are now used interchangeably by retailers and manufacturers throughout Canada and the United States.
What is the difference between a double and a queen in inches?
A queen is 60 inches wide by 80 inches long. A double is 54 inches wide by 75 inches long. That means a queen is 6 inches wider and 5 inches longer. Over a full night of sleep, those extra inches make a noticeable difference, particularly for taller sleepers or couples sharing the mattress.
What room size do I need for a double bed?
For comfortable clearance on both sides and at the foot of the bed, a room of at least 9.5 x 10.25 feet is recommended. In a tighter 10 x 10 room with the bed placed against one wall, a double fits well with enough space for a dresser and walkway.
Can I see double-size mattresses at Mattress Miracle in Brantford?
Yes. We carry double-size mattresses in-store at 441 1/2 West Street, Brantford, including the Restonic ComfortCare with 980 individually wrapped coils and our Canadian-made Sleep In flippable line. Call Brad at (519) 770-0001 to confirm stock before visiting.
Sources
- Sleep Foundation. (2023). Mattress Sizes and Dimensions Guide. Sleep Foundation. sleepfoundation.org/mattress-sizes
- Jacobson, B.H., et al. (2008). Grouped comparisons of sleep quality for new and personal bedding systems. Journal of Chiropractic Medicine, 7(4), 132-139. doi.org/10.1016/j.jcme.2008.09.003
- Carskadon, M.A., & Dement, W.C. (2011). Monitoring and staging human sleep. In M.H. Kryger et al. (Eds.), Principles and Practice of Sleep Medicine (5th ed., pp. 16-26). Elsevier Saunders.
- Okamoto-Mizuno, K., & Mizuno, K. (2012). Effects of thermal environment on sleep and circadian rhythm. Journal of Physiological Anthropology, 31(1), 14. doi.org/10.1186/1880-6805-31-14
- Canadian Chiropractic Association. (2020). Sleep and Spinal Health Recommendations. chiropractic.ca
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're shopping for a double mattress and want to confirm the dimensions are right for your room before buying, our team is happy to walk you through your options. Bring your room measurements and we'll do the rest.
Shop This Topic at Mattress Miracle
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- Restonic ComfortCare Dalton and Albany
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Or shop our mattress collection in our Brantford showroom.