Quick Answer: A single bed and a twin bed are the same size: 38 inches wide by 75 inches long (97 x 191 cm). The names are interchangeable. Canadians traditionally used "single," while "twin" became common through American retailers and now dominates Canadian usage. There is no size difference between them.
In This Guide
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Single and Twin: The Same Mattress, Two Names
"Single or twin bed" -- it is one of the most common size questions we get, and it has the simplest answer: they are the same thing. A single bed and a twin bed are identical in dimensions. The difference is purely terminological, with the name you encounter depending on where you shop and how old the retailer's catalogue is.
The term "single" was the dominant terminology in Canada for decades, particularly before American retail chains and e-commerce became widespread. Today, "twin" is more common in Canadian mattress retail because most product databases, search engines, and US-originated brands use "twin." But if you see "single" on an older frame, headboard, or mattress tag, it fits perfectly on a "twin" mattress.
Why "Twin"?
The name "twin" originally referred to the practice of placing two of these beds side-by-side in the same room -- twin beds for twins, or two single beds in a guest room. Over time, the name stuck to the size rather than the arrangement. In North American mattress retail today, "twin" is standard. In the UK and parts of Europe, "single" is still the common term, and their single dimension may differ (UK single = 90 x 190 cm, slightly narrower than the Canadian twin).
Single/Twin Bed Dimensions in Canada
| Size Name | Inches | Centimetres | Same As |
|---|---|---|---|
| Twin / Single | 38" x 75" | 97 x 191 cm | Identical -- just different names |
| Twin XL | 38" x 80" | 97 x 203 cm | Same width, 5 inches longer than standard twin |
| Double / Full | 54" x 75" | 137 x 191 cm | Next size up from twin; same length |
| Queen | 60" x 80" | 152 x 203 cm | 16" wider than twin, 5" longer |
The Canadian twin/single is 38 inches wide -- exactly the width each person gets on a queen bed when two people share it. This is why upgrading from a twin to a queen feels significantly more spacious: you are going from 38 inches for one person to 60 inches total (30 per person when shared, but 60 for a single sleeper).
Twin XL: The Important Variation
Where people sometimes get confused is when they encounter the Twin XL (also called Twin Extra Long). This is 5 inches longer than a standard twin -- 38" x 80" rather than 38" x 75". The width is identical; only the length differs.
Twin XL is standard in university dormitories across Canada and the US. If you are buying a mattress for a student residence, confirm whether the dorm uses standard twin or Twin XL before purchasing -- the length difference means sheets and frames are not interchangeable.
Practical Check: Standard Twin vs. Twin XL
If you are unsure whether an existing frame is twin or twin XL, measure the interior of the frame from head to foot. If it is 75 inches (191 cm), it is a standard twin. If it is 80 inches (203 cm), it is a Twin XL. Using a standard twin mattress in a Twin XL frame leaves a visible 5-inch gap at the foot.
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Who Is a Single/Twin Bed For?
| Use Case | Twin/Single Suitable? | Notes |
|---|---|---|
| Children (5-12) | Yes | Ideal size; fits bunk beds and loft beds |
| Teenagers | Possibly | Taller teens may prefer Twin XL for extra length |
| Adults (solo) | Space-dependent | Workable in small rooms; most adults prefer double or queen |
| Guest rooms | Yes | Space-efficient; suits occasional adult guests |
| Bunk beds | Yes | Most bunk frames use standard twin dimensions |
| University dorms | Check dorm spec | Many Canadian dorms use Twin XL -- confirm before buying |
| Couples | No | 38" is too narrow for two adults; use queen or king |
Brad, Owner at Mattress Miracle (since 1987): "Twin beds are very practical for children's rooms -- they leave enough space for a desk and floor space to play. For teenagers, especially taller ones, I often recommend looking at Twin XL because kids often get to 6 feet before the mattress does. And if they are heading to university, confirming the dorm size before buying saves a frustrating return trip."
Single vs Twin Terminology in Canada
If you have an older Canadian home with a built-in bed nook, antique headboard, or inherited frame labelled "single," it should accept a modern "twin" mattress without issue. The dimension has not changed -- only the name used in retail catalogues.
The one area where you may still see "single" used in Canadian retail is in bedding (sheets, duvets, comforter covers). Some Canadian manufacturers still label products as "single" rather than "twin." The fit is identical.
Single Beds in Brantford Homes
Many older Brantford homes -- especially those built in the 1950s through 1970s -- have secondary bedrooms sized perfectly for twin/single beds. We work with customers from all over Brantford, Paris, St. George, and Cainsville who are furnishing children's rooms, setting up guest spaces, or replacing a mattress in a bunk bed. The twin is still one of our most common requests, under either name.
Shop: Twin Mattresses at Mattress Miracle
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We are a family-owned mattress store in Brantford, helping our community sleep better since 1987. Come try mattresses in person and get honest, no-pressure advice.
441 1/2 West Street, Brantford, Ontario
Call 519-770-0001Frequently Asked Questions
Is a single bed the same as a twin bed?
Yes. A single bed and a twin bed are the same size: 38 inches wide by 75 inches long (97 x 191 cm). The terms are completely interchangeable. "Single" was the traditional Canadian term; "twin" is now more commonly used in Canadian retail because of the influence of American brands and e-commerce platforms.
What is the difference between a single and a twin XL?
The width is the same (38 inches / 97 cm). The Twin XL is 5 inches longer -- 80 inches (203 cm) rather than 75 inches (191 cm). Twin XL is the standard size in many Canadian university dormitories. If you are buying for a dorm, confirm the specific dorm requirement before purchasing.
Can I use twin sheets on a single bed?
Yes. Twin and single sheets are the same size and fit interchangeably. Since most bedding manufacturers now use "twin" as the standard label in Canada, sheets sold as "twin" will fit any bed labelled "single."
Is a twin big enough for an adult?
It depends on the adult. At 38 inches wide, a twin is workable for a single sleeper in a small space. Most adults find the width limiting for a primary bed, particularly if they move during sleep. A double (54" x 75") or queen (60" x 80") is more comfortable for adult solo sleepers. A twin is ideal for children, teenagers, and guest rooms.
Does Mattress Miracle carry twin mattresses in Brantford?
Yes. We carry twin (single) mattresses at our Brantford showroom at 441 1/2 West Street. We can help you find the right firmness for a child's bed, a guest room, or a bunk bed. Drop by Mon-Wed 10-6, Thu-Fri 10-7, Sat 10-5, or Sun 12-4, or call us at (519) 770-0001.
Sources
- Sleep Foundation. (2024). Mattress sizes and bed dimensions guide. sleepfoundation.org/mattress-information/mattress-sizes
- Fawcett Mattress. (2026). Bed sizes (Canada): Full mattress size dimensions guide. fawcettmattress.com/blogs/news/mattress-sizes-canada
- Health Canada. (2022). Consumer product safety: Cribs, cradles and bassinets. Government of Canada. canada.ca
- Canadian Mortgage and Housing Corporation. (2023). Housing in Canada: Secondary bedroom dimensions. CMHC Research.
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Mattress Miracle
441 1/2 West Street, Brantford
Phone: (519) 770-0001
Hours: Mon-Wed 10-6, Thu-Fri 10-7, Sat 10-5, Sun 12-4
Looking for a twin or single mattress in Brantford? We have been helping families find the right size since 1987. Come in and see the options -- no pressure, just honest advice on what fits your room and your budget.
Visit Our Brantford Showroom
We are located at 441 1/2 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 -- 441 1/2 West Street, Brantford, ON -- (519) 770-0001
Hours: Monday-Wednesday 10am-6pm, Thursday-Friday 10am-7pm, Saturday 10am-5pm, Sunday 12pm-4pm.
Come in and let our team help you find the right mattress for your needs. No pressure, no commission.
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