MATTRESS SIZES

Single

L
74in

W
39in

Single XL

L
80in

W
39in

Double

L
74in

W
54in

Double XL

L
80in

W
54in

Queen

L
80in

W
60in

King

L
80in

W
76in

Mattress Dimensions

Note: Mattress Length and Width are standard, but not the thickness of mattress.

Single

Single XL

Double

Double XL

Queen

King

Mattress Thickness by Size

Single / Twin (74” × 39”)

The typical mattress thickness for a Single is 6–8 inches. This is common for kids’ rooms, daybeds, or bunk beds. On a top bunk, stick to 5–7 inches.

Single XL / Twin XL (80” × 39”)

Great for teens and dorms. The average depth is 8–10 inches, but 6–7 inches is better on a bunk frame.

Double / Full (74” × 54”)

A standard mattress thickness of 8–12 inches gives enough comfort for adults. For guest beds, consider 6–8 inches.

Double XL / Full XL (80” × 54”)

Ideal for taller sleepers. A regular height of 10–12 inches is standard. On bunk-style frames, use 6–8 inches.

Queen (80” × 60”)

The most popular size. The typical Queen mattress thickness is 10–12 inches, though luxury versions may reach 14”.

King (80” × 76”)

Spacious and comfortable. The average profile ranges from 10 to 14 inches. A thick mattress works well here, but it can raise the bed height significantly.

3/4 Mattress (Three-Quarter, 75” × 48”)

Less common, often for antique frames. Standard depth is 8–10 inches, though some use 6–8 inches for older beds.

California King (84” × 72”)

Designed for tall sleepers. The common thickness is 10–14 inches, with premium versions up to 16”.

Choosing the Right Mattress Height

• • For Bunk Beds, 5–7 inches of clearance keeps sleepers safe with proper rail clearance.
• • For Trundle Beds – 4–5 inches allows the mattress to slide easily underneath.
• • For Everyday Use – Adults are most comfortable on an 8–12 inch mattress.
• • For Premium Comfort – A 12–14 inch thick mattress adds extra cushioning, if space allows.

Frequently Asked Questions 

1. 1. Does mattress thickness matter?

2. Yes. Thickness (or mattress height) affects comfort, support, and safety.

3. 2. Are thicker mattresses better?

4. Not always. A thick mattress feels plush, but an average profile of 8–12 inches suits most sleepers.

5. 3. Are thicker mattresses more comfortable?

6. They can be, especially for heavier sleepers, but comfort also depends on the materials inside.

7. 4. How many inches thick is a standard mattress?

8. The standard thickness is 8–12 inches, which is considered the average for most bed types.

9. 5. How thick are mattress toppers?

10. Most toppers measure 2–4 inches and are designed to enhance comfort.

11. 6. How thick are Queen mattresses?

12. A Queen mattress typically measures 10–12 inches in height, though luxury models may be thicker.

 While mattress sizes (length and width) are fixed, the depth varies depending on comfort needs and bed style. For kids’ rooms and bunks, choose 5–7 inches. For adults, a regular mattress thickness of 8–12 inches is the most practical and common choice.

Explore our collection of solid wood bunk beds and mattresses at Bunk Beds Canada