Bed Size Order: Complete Canadian Guide from Crib to Alaskan King

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Why Getting the Size Order Right Matters

You'd think picking a mattress would be simple. You walk in, you point at something comfortable, you go home and sleep. But more than a few people have driven away from a furniture store with a King-sized mattress strapped to their car, only to discover their bedroom barely fits a Queen.

Knowing the bed size order, from smallest to largest, is the kind of practical knowledge that saves you a very frustrating afternoon. It also helps you understand exactly what you're trading off when you step up or down a size: sleeping surface, room clearance, sheet costs, and how much of the bed your partner's elbow will occupy by 3 a.m.

At Mattress Miracle in Brantford, we've been answering these questions since 1997. Brad, our owner, has had this conversation thousands of times. The questions are always roughly the same: "What's the difference between a Full and a Queen?" and "Will a King fit in my room?" This article answers both, along with every other size question you might have, from crib to the novelty-sized Alaskan King.

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Complete Bed Size Chart: Smallest to Largest

Here is the full size order in one place. We've included both imperial and metric measurements, because Canadian renovations tend to toggle between the two depending on how old your house is and which side of the tape measure you're reading.

A note on the oversized options: Wyoming King and Alaskan King mattresses are custom or specialty items. They are not stocked at most Canadian retailers, and bedding for them is nearly impossible to find off the shelf. We mention them here for completeness, but unless you are outfitting a very large custom bedroom, the practical range for Canadian homes runs from Twin through California King.

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Canadian Bed Sizes Explained

Canada follows the same standard mattress dimensions as the United States for the most part. Where things get a little confusing is in the older terminology still common in many Canadian homes and furniture stores.

Twin and Single: Same Thing

In Canada, "Twin" and "Single" refer to the same 38" x 75" mattress. You'll see both names used interchangeably, sometimes even on the same product page. If a store advertises a Single and you're looking for a Twin, don't worry. They are identical.

Full and Double: Also the Same Thing

This one trips people up more often. A Full mattress and a Double mattress are the same size: 54" x 75". The name "Double" comes from the idea that the mattress is double the width of a Twin. In practice, two adults sharing a Double each have about 27 inches of space, which is narrower than a Twin. It works, but it is not exactly luxurious.

The "Full" name is more common in newer listings, while "Double" still shows up frequently in older Canadian homes where the bed frame has been in the family for decades. If you're buying new sheets for an old Double, look for Full-size sheets. They're the same.

King vs. California King: Wider vs. Longer

A standard King (also called Eastern King) measures 76" x 80". A California King measures 72" x 84". So a King is wider, and a California King is narrower but longer. For most Canadian couples, the standard King is the better choice because the extra 4 inches of width is more useful night-to-night than the extra 4 inches of length. California Kings suit tall people, particularly those over 6'2", who regularly find their feet hanging off a standard King.

Room Size Requirements for Every Bed

Knowing the mattress dimensions is only half the equation. The other half is whether your bedroom can actually accommodate the bed, the frame, the nightstands, and a path to the door that doesn't require turning sideways.

Interior designers generally recommend at least 24 inches of clearance on the sides of a bed that need to be accessible, and at least 30 inches at the foot for ease of movement. These numbers assume you want to make the bed without contorting yourself and walk around the room without bumping your shins on the frame every morning.

Who Each Size Actually Suits

Crib and Toddler (28" x 52")

Cribs and toddler beds share the same mattress dimensions in Canada. The difference is the frame: cribs have high sides for safety, while toddler beds sit low to the ground with partial rails. Crib mattresses are standardised by Health Canada for safety, so when shopping, look for firm, flat mattresses without excessive padding.

Twin / Single (38" x 75")

The Twin is the workhorse of children's bedrooms, guest rooms, and small apartments. It suits a solo sleeper well and is the standard size for most twin mattress sales in Canada. At 38 inches wide, a single adult has plenty of room to sprawl. Two adults do not.

The Twin is also the most common choice for bunk beds, which almost always use Twin mattresses on both levels. If you're outfitting a bunk bed, verify the interior mattress height clearance before buying, as thicker mattresses can reduce the sitting clearance on the lower bunk.

Twin XL (38" x 80")

The Twin XL adds 5 inches of length over a standard Twin, bringing it to 80 inches, the same length as a Queen and King. This is the standard size for university dormitory beds across North America, so if you're outfitting a student's dorm room, confirm the bed dimensions before ordering. At home, Twin XLs suit tall teenagers and adults over 6'0" who sleep in single rooms.

Full / Double (54" x 75")

The Full sits in an awkward middle ground. It's wider than a Twin, which makes it comfortable for a solo adult who likes to spread out. But it's shorter than a Queen at 75 inches, which can be a problem for taller sleepers. It's also narrower than many couples would find comfortable for regular co-sleeping.

The Full makes sense for: a solo adult in a smaller bedroom, a teenager transitioning from a child's room, or a guest room where the priority is flexibility rather than luxury. If you're choosing between a Full and a Queen and budget is the constraint, it's worth looking at Queen mattress sales in Canada before settling on a Full.

Queen (60" x 80")

The Queen is the most popular mattress size in Canada, and for good reason. At 60" x 80", it gives a couple 30 inches each, which is enough for a comfortable night's sleep for most people. It fits in most Canadian bedrooms without requiring architectural adjustments, and the bedding options are wide and affordable.

A Queen suits: couples in standard master bedrooms, solo adults who want generous space, and anyone who co-sleeps with a pet. If your room is at least 10' x 11', a Queen works well. For most Canadian homes, a Queen is the right answer.

King (76" x 80")

A King gives each person 38 inches of space, which is essentially a Twin's worth of sleeping area each. That's a meaningful improvement over a Queen for light sleepers, couples with very different sleep schedules, or anyone who shares the bed with children who migrate in the night. King mattress sales are worth watching if you're in the market, as the price difference from Queen to King is significant and promotions can close that gap.

The King requires a larger room and a larger budget, not just for the mattress but for the frame, the bedding, and often the furniture arrangement that makes the room feel balanced. It is the right choice when the room genuinely fits it.

California King (72" x 84")

The California King is for tall people. At 84 inches long, it accommodates someone up to 6'8" comfortably. The trade-off is width: at 72 inches, it is 4 inches narrower than a standard King. California King bedding is also harder to find in Canada than standard King bedding, and the selection is smaller. If you're not over 6'2", a standard King is almost always the better choice.

How to Measure Your Room Before You Buy

This step gets skipped more often than it should. People come into the showroom with a rough sense of their room size, pick a mattress they love, and then discover at delivery that the nightstands won't fit, or worse, the mattress won't turn the corner in the hallway.

What to Measure

Start with the room dimensions: length and width at the widest points. Then note where the doors and closets are, because a door that swings into the bedroom affects where the bed can go. Windows matter too, particularly if you have a radiator or baseboard heater beneath one, which rules out placing the bed against that wall.

Measure the hallway width and any corners between the front door and the bedroom. A King mattress is 76 inches wide and about 10 to 14 inches thick. Getting it around a tight corner in an older Brantford home requires some advance planning. Our delivery team has seen every configuration and can advise when you're making a purchase.

The Floor Plan Sketch

Draw it out, even roughly. Mark the door, the windows, the closet, and the electrical outlets. Then draw the bed to scale and see where the nightstands go. This takes five minutes and prevents a great deal of frustration.

Choosing Between Sizes: The Real Decision Points

The questions people actually wrestle with tend to come down to a few key comparisons. Here's how to think through them.

Twin vs. Full: Is the Extra Width Worth It?

For a solo sleeper, yes. The Full gives you 16 more inches of width, which means significantly more room to move without falling off the edge. The length is the same at 75 inches. If your bedroom can accommodate the extra width and you have the budget, a Full is a better adult mattress than a Twin. The exception is bunk beds or very small rooms where every inch counts.

For couples, a Full is a compromise. Two adults at 27 inches each are technically sleeping on less width than a standard Twin. It is workable, but a Queen is a considerably better experience. You can compare these options in detail in our article on Twin vs. Double vs. Queen in Canada.

Full vs. Queen: The Most Common Upgrade

This is the most common decision we help people with. The Full is 54" x 75". The Queen is 60" x 80". That's 6 more inches of width and 5 more inches of length. For couples, the difference is significant. For solo sleepers, the difference is comfortable but not essential.

The price difference between a Full and a Queen is typically in the range of $100 to $200 at the mattress level, with the bedding cost running slightly higher for a Queen. If you're choosing for a guest room that will mostly be used by solo guests, a Full is an economical and practical choice. If the room is for a couple, spend the extra for the Queen.

Queen vs. King: The Luxury Upgrade

A Queen is 60 inches wide. A King is 76 inches wide. That 16-inch difference is the width of a good-sized pillow on each side. For couples who sleep soundly and don't disturb each other, the Queen is entirely sufficient. For couples where one person is a restless sleeper, or where a child or pet regularly joins in the night, the King is worth serious consideration.

The room size requirement jumps substantially. You need at least 12' x 12' for a King to feel comfortable, and 13' x 13' to have breathing room. The mattress price also increases. At Mattress Miracle, our Restonic ComfortCare Queen runs $1,619 and our King runs $2,051. That $330 difference is worth it if the room fits it and the sleep quality justifies it. It is not worth it if you're cramming a King into a 10' x 10' room and sacrificing all the functional space to do so.

Canadian Considerations: Older Homes and Standard Frames

Canada's housing stock spans a wide range of eras. A Victorian-era home in downtown Brantford might have a master bedroom that tops out at 10' x 11'. A newer build in West Brant might have a master suite at 14' x 16'. The right mattress size is not the same for both households.

Heritage Homes and Smaller Bedrooms

Older homes often have doorways and hallways that are narrower than modern standards. A standard interior door is 30" to 32" wide in a pre-1960s home, compared to 32" to 36" in newer construction. Getting a King-sized mattress box through a narrow stairwell and a tight hallway corner requires either a bed-in-a-box delivery or some creative manoeuvring. If you live in an older home, ask about delivery options before you purchase.

Many heritage-home owners in Brantford find that a Queen is their practical ceiling, not because of budget but because of floor plan. This is not a problem. A Queen in a well-appointed bedroom looks appropriate and sleeps beautifully.

Platform Frames vs. Box Spring Frames

The size of the mattress itself is only part of the floor plan calculation. The frame adds width and length. A platform bed with minimal overhang adds 2 to 4 inches on each side. A traditional frame with a box spring and rails can add 4 to 6 inches. A bed with a large upholstered headboard can add significant height that affects how the room reads visually.

When you're measuring for a new mattress, account for the frame you'll be putting it on, or the frame you'll be buying with it. If you're replacing a mattress in an existing frame, verify that the new mattress dimensions match the frame before delivery.

Restonic Mattresses at Mattress Miracle

We carry Restonic mattresses at Mattress Miracle, and our ComfortCare line is one of the most consistently requested products in our showroom. Here's a brief overview of what's available in each size.

Both sizes are available to try in our Brantford showroom. We encourage people to bring their partner, spend time on the mattress in their actual sleep position, and ask questions. Talia, our showroom specialist, can walk you through the coil construction and cover materials in detail. There's no pressure and no timer. Take the time you need.

You can also browse our full range on the mattresses page to see current availability and pricing across all sizes and collections.