Shopping for a new mattress and feeling overwhelmed by the options? A reliable bed size chart is the first thing you need before spending a dollar. Mattress sizes can be confusing, especially when you are trying to figure out whether a "double" and a "full" are the same thing (they are) or whether Canadian sizes differ from American ones (they do not). This guide breaks down every standard mattress size with exact dimensions in both inches and centimetres, so you can make a confident decision the next time you walk into a mattress store.
Quick Reference: Standard Mattress Sizes
- Crib: 28" x 52" (71 x 132 cm)
- Twin / Single: 38" x 75" (97 x 191 cm)
- Twin XL: 38" x 80" (97 x 203 cm)
- Full / Double: 54" x 75" (137 x 191 cm)
- Queen: 60" x 80" (152 x 203 cm)
- King: 76" x 80" (193 x 203 cm)
- California King: 72" x 84" (183 x 213 cm)
Complete Canadian Bed Size Chart (Inches and CM)
Here is the full bed size chart with every standard mattress size available in Canada. Good news for cross-border shoppers: Canadian mattress sizes are identical to US mattress sizes. There is no difference, so you will never have to worry about compatibility when ordering from either side of the border.
| Mattress Size | Width x Length (Inches) | Width x Length (CM) | Best For |
|---|---|---|---|
| Crib | 28" x 52" | 71 x 132 cm | Infants and toddlers |
| Twin (Single) | 38" x 75" | 97 x 191 cm | Children, single sleepers, bunk beds |
| Twin XL | 38" x 80" | 97 x 203 cm | Taller teens, college dorms |
| Full (Double) | 54" x 75" | 137 x 191 cm | Single adults, teens, guest rooms |
| Queen | 60" x 80" | 152 x 203 cm | Couples, single adults wanting space |
| King | 76" x 80" | 193 x 203 cm | Couples wanting maximum width, co-sleeping families |
| California King | 72" x 84" | 183 x 213 cm | Tall sleepers (over 6'2"), couples who prefer length |
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Keep this chart bookmarked. It covers every mattress you will realistically encounter while shopping in Brantford or anywhere else in Canada.
Twin Dimensions, Single Mattress Size, and Twin XL Explained
Let us start with the smaller sizes, because this is where confusion tends to creep in. The twin dimensions mattress measures 38 inches wide by 75 inches long (97 x 191 cm). If you have heard the term mattress size single, that is the exact same bed. "Twin" and "single" are interchangeable names for the same mattress. The naming difference is mostly regional. Many Canadians grew up calling it a single, while American retailers tend to use twin.
A standard twin works well for children from about age five through their early teen years. It also fits neatly into bunk bed frames, making it a practical choice for shared kids' rooms. For adults, it is a tight fit. If you are average height, you will manage, but anyone over about 5'10" may find their feet hanging close to the edge.
That is where the Twin XL comes in. At 38" x 80" (97 x 203 cm), it adds five crucial inches of length. This is the standard size used in university dorm rooms across Canada and the US. It gives taller teenagers and young adults the legroom they need without taking up more floor space width-wise. If you are furnishing a room for a growing teen, the Twin XL is often worth the small upgrade.
Comfort Tip: Twin vs. Twin XL
If your child is already over 5'5" or you expect a growth spurt in the next couple of years, go with the Twin XL. The extra five inches of length cost very little more, and it prevents you from having to replace the mattress again in a year or two. Sheets for Twin XL are widely available at most Canadian retailers.
Full Mattress Dimensions and Queen Bed Dimensions
The mid-range sizes are where most Canadian households land, and they are also where the most common shopping questions come up.
Full (Double) Mattress
The full mattress dimensions are 54 inches wide by 75 inches long (137 x 191 cm). You will also see this called a "double" mattress, and again, these are two names for the same thing. A full gives you 16 more inches of width compared to a twin, which makes a real difference for a single adult who likes to spread out. It is a popular pick for guest bedrooms, teenager rooms, and studio apartments where a queen might dominate the floor plan.
Can two adults sleep comfortably on a full? Honestly, it is a stretch. Each person gets about 27 inches of personal space, which is less than a crib mattress width. For the occasional overnight guest couple, it will do. For every night? Most couples find it too cramped after a few weeks.
Queen Mattress
The queen bed dimensions are 60 inches wide by 80 inches long. For those who prefer metric, the queen mattress dimensions cm are 152 x 203 cm. The queen is far and away the most popular mattress size in Canada. It gives each partner 30 inches of personal width, which is a meaningful improvement over the full, and the 80-inch length accommodates sleepers up to about 6'4" without issue.
A queen fits comfortably in most standard Canadian bedrooms (10' x 10' or larger). It is versatile enough for couples, and it gives single adults a genuinely luxurious amount of space. If you are unsure which size to pick and you have a standard-sized bedroom, the queen is almost always the safe bet.
Sleep Science: Why Personal Space Matters
Research from the Sleep Research Society shows that bed partners who have less than 30 inches of personal sleeping width experience more nighttime awakenings and lighter sleep overall. A queen mattress gives each person exactly that 30-inch threshold, which is one reason sleep experts frequently recommend it as the minimum size for couples. If either partner is broader-shouldered or tends to move a lot during sleep, stepping up to a king can make a noticeable difference in sleep quality.
King Size Mattress Measurement and California King
The king sizes are where you get serious about sleeping space. If budget and bedroom size allow, these are hard to beat for couples.
Standard King
The king size mattress measurement is 76 inches wide by 80 inches long (193 x 203 cm). That is the equivalent of two Twin XL mattresses placed side by side, which is why some couples use a "split king" setup with two separate Twin XL mattresses on a king frame. Each partner gets 38 inches of personal space on a king, making it ideal for couples who value room to move, families who co-sleep with young children, or anyone who shares the bed with a restless pet.
The trade-off? A king bed needs a bigger room. We will cover specific room dimensions below, but plan for a bedroom of at least 12' x 12' to keep the space from feeling cramped.
California King
The California King measures 72 inches wide by 84 inches long (183 x 213 cm). It is four inches narrower than a standard king but four inches longer. This makes it the go-to choice for taller sleepers, particularly those over 6'2". Despite the name suggesting otherwise, the California King is not bigger than a standard king. It actually has slightly less total surface area. The difference is all about the shape: narrower and longer.
One practical note: California King bedding and sheets are less commonly stocked in Canadian stores compared to standard king. You can find them, but you may need to order online or shop at specialty retailers. Factor that into your decision.
Mattress Guide: King vs. California King
Choose the Standard King if you and your partner prioritize width and want maximum side-to-side room. Choose the California King if either sleeper is over 6'2" and length is the priority. If you are on the fence, the standard king is the more practical choice in Canada because sheets, mattress protectors, and bed frames are easier to find and typically cost less.
Room Size Recommendations for Each Mattress
Buying the right mattress is only half the equation. You need to make sure it actually fits in your room with enough space to walk around comfortably, open drawers, and not feel boxed in. Here are the minimum recommended room sizes for each mattress type.
| Mattress Size | Minimum Room Size | Comfortable Room Size |
|---|---|---|
| Twin / Single | 7' x 10' | 9' x 10' |
| Twin XL | 7' x 10' | 9' x 10' |
| Full / Double | 9' x 10' | 10' x 12' |
| Queen | 10' x 10' | 10' x 12' |
| King | 12' x 12' | 12' x 14' |
| California King | 12' x 12' | 12' x 14' |
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These recommendations assume you want at least two feet of clearance on the sides of the bed where you walk and about three feet of clearance at the foot. If your room is between the minimum and comfortable sizes, you can make it work, but you may need to be strategic about furniture placement. Skip the oversized nightstands and consider a wall-mounted shelf instead.
A Note for Brantford Shoppers
Many homes in Brantford's older neighbourhoods have bedrooms on the smaller side, especially in the charming century homes near downtown. If your master bedroom is 10' x 11', a queen will fit well, but a king will feel tight. Bring your room measurements with you when you visit our store at 441 1/2 West Street. We are happy to help you figure out which size makes sense for your specific space, and we will never pressure you into buying bigger than you need.
What to Expect Price-Wise at Mattress Miracle
Price is always a factor, and mattress cost does increase with size. Here is a general idea of what you can expect at Mattress Miracle across our range of brands and comfort levels.
| Mattress Size | Typical Price Range |
|---|---|
| Twin / Single | $199 - $899 |
| Twin XL | $249 - $999 |
| Full / Double | $299 - $1,199 |
| Queen | $399 - $2,499 |
| King | $599 - $3,499 |
| California King | $599 - $3,499 |
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These ranges reflect everything from basic no-frills models to premium hybrid and memory foam options. The sweet spot for most families tends to land somewhere in the middle. When you visit, Brad and Dorothy can walk you through the options at every price point so you can find something that fits both your body and your budget.
How to Choose the Right Mattress Size
With all the numbers in front of you, here is a straightforward decision framework:
For children (ages 3-12): A twin or single mattress is the standard choice. It is affordable, fits smaller bedrooms, and leaves plenty of floor space for play.
For teenagers: A Twin XL or full is ideal. The Twin XL works if the room is narrow. The full works if your teen wants more width and the room can handle it.
For single adults: A full or queen gives you comfortable personal space. If you can fit a queen in your room, go for it. You will not regret having the extra room.
For couples: A queen is the minimum recommended size. A king or California King is better if your room and budget allow. The difference in sleep quality for couples moving from a full to a queen (or a queen to a king) is significant.
For tall sleepers (over 6'2"): Look at Twin XL, queen, king, or California King. Avoid the standard twin and full, which are only 75 inches long.
For guest rooms: A full or queen strikes the best balance. It accommodates most guests comfortably without dominating a room that serves double duty as an office or hobby space.
Frequently Asked Questions
Are Canadian mattress sizes different from American mattress sizes?
No. Canadian and American mattress sizes are identical. A queen mattress in Canada is 60" x 80" (152 x 203 cm), exactly the same as in the United States. You can buy a mattress from either country and it will fit standard bed frames and sheets from the other. European sizes, however, are different, so be careful when shopping from overseas retailers.
What is the difference between a twin and a single mattress?
There is no difference. "Twin" and "single" refer to the same mattress size: 38" x 75" (97 x 191 cm). The term "single" is more common in Canada and the UK, while "twin" is the standard term used by most North American mattress manufacturers. When you see either term on a product listing, you are looking at the same bed.
Is a full mattress the same as a double?
Yes. A full and a double are the same mattress: 54" x 75" (137 x 191 cm). Like the twin/single naming situation, "full" and "double" are simply two names for the same size. Most manufacturers and retailers use the terms interchangeably.
What size mattress do most couples need?
Most sleep experts recommend at least a queen (60" x 80") for couples. A queen gives each partner about 30 inches of personal width, which is the minimum for comfortable shared sleeping. If either partner is a restless sleeper, runs warm, or is broader-shouldered, a king (76" x 80") will provide noticeably better sleep for both people.
How much bigger is a king than a queen mattress?
A king mattress is 16 inches wider than a queen (76" vs 60") and the same length (80"). That extra 16 inches of width gives each partner 38 inches of personal space instead of 30. In total surface area, a king offers about 6,080 square inches compared to a queen's 4,800 square inches, which is roughly 27% more sleeping area.
Find Your Perfect Size at Mattress Miracle
Numbers on a chart are helpful, but there is no substitute for lying down on a mattress in person. Brad and Dorothy have been helping Brantford families find the right mattress since 1987, and they would love to help you too. Bring your room measurements, bring your questions, and take all the time you need.
Mattress Miracle
441 1/2 West Street, Brantford, Ontario
519-770-0001
Store Hours:
Monday - Wednesday: 10 AM - 6 PM
Thursday - Friday: 10 AM - 7 PM
Saturday: 10 AM - 5 PM
Sunday: 12 PM - 4 PM
Sources
- Radwan A, Fess P, James D, et al. Effect of different mattress designs on promoting sleep quality, pain reduction, and spinal alignment in adults with or without back pain. Sleep Health. 2015;1(4):257-267. DOI: 10.1016/j.sleh.2015.08.001
- Verhaert V, Haex B, De Wilde T, et al. Ergonomics in bed design: the effect of spinal alignment on sleep parameters. Ergonomics. 2011;54(2):169-178. DOI: 10.1080/00140139.2010.538725
- Okamoto-Mizuno K, Mizuno K. Effects of thermal environment on sleep and circadian rhythm. J Physiol Anthropol. 2012;31(1):14. DOI: 10.1186/1880-6805-31-14
- Cary D, Briffa K, McKenna L. Identifying relationships between sleep posture and non-specific spinal symptoms in adults: A scoping review. BMJ Open. 2019;9(6):e027633. DOI: 10.1136/bmjopen-2018-027633