Choosing the right bunk bed size is essential for comfort, safety, and room layout. Whether you’re buying for kids, teens, or adults, understanding bunk bed measurements will help you pick the perfect model for your home, cabin, or rental. Below you’ll find a complete breakdown of bunk bed size dimensions – including single, double, and queen options, along with the best uses for each.
Bunk Beds with the Same Upper and Lower Size
1. Single Over Single Bunk Bed (Twin Over Twin)
Mattress size:
- Length: 74" (188 cm)
- Width: 39" (99 cm)
Usage:
The single bunk bed – also known as twin bunk bed – is the most common option in Canada. It’s ideal for children, small rooms, or guest areas.
2. Single XL Over Single XL (Twin XL Over Twin XL)
Mattress size:
- Length: 80" (203 cm)
- Width: 39" (99 cm)
Usage:
A great choice for teens or taller adults. The extra-long bunk bed offers additional legroom – comfortable for someone up to 6’2”. This twin XL bunk bed size is also popular in college dorms and rentals.
3. Double Over Double (Full Over Full)
Mattress size:
- Length: 74" (188 cm)
- Width: 54" (137 cm)
Usage:
A double bunk bed comfortably fits four children or two adults with extra space to move. It’s a versatile pick for family cottages or vacation homes. If sleeping diagonally, even tall users will find it spacious.
4. Double XL Over Double XL (Full XL Over Full XL)
Mattress size:
- Length: 80" (203 cm)
- Width: 54" (137 cm)
Usage:
Perfect when you want the comfort of a queen bed but have limited space. A double XL bunk bed gives plenty of length for adults and teens while keeping a compact footprint.
5. Queen Over Queen
Mattress size:
- Length: 80" (203 cm)
- Width: 60" (152 cm)
Usage:
The queen bunk bed size is ideal for adult use – popular in ski lodges, resorts, and cottages. It’s designed for strength and durability to support heavier loads and taller users.
Different Upper and Lower Bunk Bed Size
6. Single Over Double (Twin Over Full)
Upper (Single): 74" x 39" (188 x 99 cm)
Lower (Double): 74" x 54" (188 x 137 cm)
Usage:
The double-over-single bunk bed is a smart, space-saving design. It provides a roomy lower bed for two and a cozy upper bunk for one. Great for families with kids and occasional guests – plus, it allows more headroom when sitting on the lower bunk.
7. Single XL Over Double XL (Twin XL Over Full XL)
Upper (Single XL): 80" x 39" (203 x 99 cm)
Lower (Double XL): 80" x 54" (203 x 137 cm)
Usage:
Best for tall users and teens, this combination keeps proportions balanced while providing extra legroom on both bunks. A good fit for rental homes or guest spaces.
8. Single XL Over Queen (Twin XL Over Queen)
Upper (Single XL): 80" x 39" (203 x 99 cm)
Lower (Queen): 80" x 60" (203 x 152 cm)
Usage:
Commonly called single over queen bunk bed, though technically it’s Single XL over Queen. This design is excellent for vacation homes, Airbnbs, or shared rooms – accommodating up to three adults comfortably.
9. Double XL Over Queen (Full XL Over Queen)
Upper (Double XL): 80" x 54" (203 x 137 cm)
Lower (Queen): 80" x 60" (203 x 152 cm)
Usage:
An elegant alternative to the queen-over-queen bunk bed. The slightly smaller top bunk makes it look less boxy while still offering full adult sleeping space.
Bunk Bed Size Chart
The chart below lists all bunk bed sizes available at Bunk Beds Canada. These are our standard frame dimensions, designed to fit North American bed sizes in both inches and centimetres.
| Bunk Bed Type | Size (inches) | Size (cm) | Best For |
|---|---|---|---|
| Twin over Twin | 39 × 74 | 99 × 188 | Kids, youth, compact rooms |
| Twin XL over Twin XL | 39 × 80 | 99 × 203 | Teens, tall adults |
| Twin over Full | 39 × 74 / 54 × 74 | 99 × 188 / 137 × 188 | Families, shared rooms |
| Full over Full | 54 × 74 | 137 × 188 | Kids, couples, family cabins |
| Twin XL over Full XL | 39 × 80 / 54 × 80 | 99 × 203 / 137 × 203 | Teens, tall adults, guests |
| Twin XL over Queen | 39 × 80 / 60 × 80 | 99 × 203 / 152 × 203 | Vacation homes, rentals |
| Full XL over Full XL | 54 × 80 | 137 × 203 | Adults, guest rooms |
| Full XL over Queen | 54 × 80 / 60 × 80 | 137 × 203 / 152 × 203 | Cottages, family suites |
| Queen over Queen | 60 × 80 | 152 × 203 | Adults, resorts, lodges |
Bunk Bed Mattress Sizes and Tips
When selecting a mattress for a bunk bed, it's important to consider both the thickness and the dimensions. A standard mattress thickness of 6 to 8 inches is ideal for the upper bunk, as it helps ensure that the guard rails remain high enough for safety. Always refer to the manufacturer's specifications, as the measurements for bunk beds can vary slightly depending on the design.
If you’re buying a bunk bed for adults, focus on both the height and weight capacity of the frame. Adult bunk bed sizes are typically taller and stronger, offering more sleeping comfort and long-term durability.
For quick metric conversions, remember that one inch equals 2.54 centimetres, and one foot equals 30.48 centimetres. Remembering these points will help you understand bunk bed sizes in cm or inches. This is especially true when comparing Canadian and international models.
Which Bunk Bed Size Should You Choose?
Think about who’s using it first. For kids, a simple single-over-single works perfectly. Teenagers usually need a bit more legroom, so the twin XL or single XL is a safe pick. For adults or vacation homes, the double and queen bunk bed sizes give everyone more breathing space. If you’re furnishing a family room or cabin, a single-over-double or single XL-over-queen gives flexibility and a comfortable lower bunk for guests.
Shop Solid Wood Bunk Beds by Size
The size of your bunk bed directly affects both comfort and room layout. Before buying a mattress, always confirm the bunk bed measurements to ensure a proper fit. For lasting performance, choose a solid wood bunk bed. It provides better support and durability for all mattress sizes, from twin to queen. Explore our collections of bunk beds, made from solid wood and built to last a lifetime.
