Mattress Size Guide: All Canadian Bed Dimensions

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Choosing a mattress size sounds simple until you are standing in a showroom trying to remember whether a queen or a full actually fits in your spare room. This mattress size guide covers every standard Canadian size in both imperial and metric, the room dimensions you actually need, and the honest comparisons that help you decide.

We have been helping Brantford-area families get this right since 1997. The most common regret we hear is from couples who bought a double thinking it would be fine, and discovered within a few weeks that 54 inches of shared width is not quite enough. Brad, our owner, puts it plainly: "The extra cost of going up a size is small compared to years of sleeping well."

All Canadian Mattress Sizes at a Glance

A note on Canadian sizing: standard mattress dimensions in Canada match U.S. dimensions, so bedding, frames, and protectors imported from the U.S. will fit Canadian mattresses. European sizing differs significantly, a European "140" queen (140 x 200 cm) is shorter and narrower than a Canadian queen (152 x 203 cm). If you are buying sheets or duvet covers from European retailers, check the centimetre measurements carefully.

Twin and Full: The Single-Sleeper Sizes

Twin (Single), 38" x 75"

The twin is the standard children's bed and the most common bunk-bed size. At 38 inches wide, it fits one average-sized adult reasonably well, but leaves very little room for movement. The 75-inch length (about 6'3") can be short for tall teenagers or adults over 6 feet.

We carry twin-size Restonic ComfortCare mattresses starting at $699 with 690 coils, a solid entry point for a child's bedroom or guest room that sees occasional use. For a child moving from a crib, a twin is the right first step and will see them through to their mid-teens in most cases.

Twin XL, 38" x 80"

The Twin XL is identical in width to a standard twin but 5 inches longer. That extra length matters for sleepers over 6 feet and makes the Twin XL the standard size for university residence rooms. Two Twin XL mattresses placed side by side create a split king configuration, which is useful for couples using adjustable bases at different angles. We have a full comparison in our twin vs. Twin XL guide.

Double (Full), 54" x 75"

The full size mattress dimension is 54 inches wide by 75 inches long, wider than a twin by 16 inches but shorter than a queen by 5 inches. It gives a single adult generous room to sprawl, and it technically fits two people, but each person gets only 27 inches of width. For context, a single twin is 38 inches wide. Two adults on a full have less space individually than either would on their own twin.

The double remains popular for spare bedrooms and smaller apartments where space is tight but occasional couples need to sleep comfortably. For a permanent couple's bed, we generally recommend stepping up to queen.

Queen: Canada's Most Popular Size

The queen mattress at 60 inches by 80 inches gives two adults 30 inches each, not lavish, but enough for most couples to sleep well, especially combined with a mattress that absorbs motion. Queen mattresses account for roughly 45 to 47 percent of Canadian mattress sales, according to industry reporting from Furniture Today.

For the primary bedroom of most Ontario homes built after 1980, the queen is the practical default. It fits a 10 by 12 bedroom with reasonable walking room on both sides, and bedding in queen sizes is widely available and competitively priced. A queen size blanket typically runs 90 inches by 90 inches, enough drape without looking excessive.

The Restonic ComfortCare Queen at $1,619 is our most recommended value-tier option for couples. With 1,222 individual coils, it offers the support structure to handle two people over a long service life. If you want to see what a quality queen feels like, this is the one we put people on first in our Brantford showroom.

King and California King

King, 76" x 80"

A standard king gives each person 38 inches of width, the same as a twin bed each. For couples who want to sleep near each other without disturbing each other, the king is the best choice. The extra 16 inches over a queen makes a practical difference in households with young children who occasionally share the bed, or with pets.

The king does require a larger bedroom. A 12 by 12 room is the minimum workable size; 14 by 12 or larger is comfortable. A king size headboard can also be substantial, many upholstered king headboards run 80 to 86 inches wide, so measure doorways before purchasing a fully assembled headboard.

Restonic ComfortCare King starts at $2,051 with 1,440 coils, the highest coil count in our standard lineup, which translates to firmer edge support and better distribution of weight across the entire sleep surface.

California King, 72" x 84"

The California King is 4 inches narrower than a standard king but 4 inches longer, making it the longest standard mattress available in Canada. This trade-off makes sense only for sleepers over 6'2" who regularly feel their feet hanging off the end of a king-size bed. For everyone else, the standard king's extra 4 inches of width is more useful than the California King's extra length.

One practical consideration: California King bedding is harder to find in Canada and typically more expensive. Queen and king bedding is stocked by essentially every Canadian retailer; California King sheets and duvet covers are a specialty order at many stores.

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Key Size Comparisons

Full Mattress Dimensions vs Queen

Mattress Sizes Twin vs Full

Queen Size Bed vs Full: The Bottom Line

For single adults under 6 feet, a full (double) is a comfortable primary bed. For couples, the queen size bed vs full argument almost always resolves in favour of the queen, the 6-inch width gain and 5-inch length gain add up to noticeably better sleep quality for two people. The price difference between a full and a queen is rarely more than $100 to $200, making it a straightforward value calculation.

Room Size Requirements

We recommend at least 24 inches of walking room on each side of the bed, and 36 inches at the foot of the bed where possible. Here is how that works out for each standard mattress size:

In practice, Brantford and most of Southern Ontario's older housing stock runs smaller than modern builds. Pre-1960s homes often have 10 by 10 or 10 by 12 primary bedrooms. If your room is in that range, queen is workable but king will feel crowded. Measure before you shop, it saves a difficult conversation later.

Bedding Sizes by Mattress

Bedding dimensions vary slightly between manufacturers, but these are the standard Canadian sizes you will find on most product pages:

A queen size blanket typically measures 90 by 90 inches, with queen size blanket dimensions varying slightly between manufacturers, some run larger at 90 by 100 for extra drape. When buying blankets rather than duvets, size up if you prefer the blanket to hang down the sides of the bed.

Doona covers (duvet covers) in king size measure around 104 by 90 inches for a standard king. Note that the doona covers king size from some European brands may be labelled "220 cm x 240 cm," which is slightly different from the Canadian king, check measurements before ordering European bedding for a North American king mattress.

For a deeper look at sheet materials, thread count, and what actually matters in Canadian bedding, see our complete bed sheets guide.

How to Choose the Right Mattress Size

One consideration that often gets overlooked: the long-term use of the room. A spare bedroom that sees guests twice a year can work with a double. If you anticipate longer visits from family or the room might become a primary bedroom for a teenager in a few years, queen is the more flexible choice.

A queen size air bed can be a useful temporary solution when transitioning between mattress sizes or accommodating extra guests, but for permanent sleeping arrangements, a quality mattress on a proper frame is worth the investment. An air bed used nightly breaks down within a year or two.

Related Guides in This Series

• Twin vs. Twin XL: Full Comparison
• King vs. Queen Mattress: Which Size is Right for You?
• Queen Bed Frame Canada: Buying Guide
• How to Choose Bed Sheets for Every Mattress Size