Is a full mattress the same as a double mattress?

Yes. "Full" and "double" refer to the same mattress size: 54 inches wide by 75 inches long. The term "double" dates to a time when this was considered a two-person size. Today it is more accurately described as a roomy single or a tight couple's bed.

How does a full mattress compare to a queen in size and cost?

A full mattress is 54 inches wide by 75 inches long. A queen is 60 inches wide by 80 inches long — 6 inches wider and 5 inches longer. For two adults, that difference is significant. A full gives each person about 27 inches of sleeping width; a queen gives each person 30 inches. In terms of price, a comparable queen typically costs $100 to $200 more than a full.

Who should buy a full mattress?

A full mattress is most practical for a single adult who wants more sleeping width than a twin provides, a teenager transitioning from a twin, or a guest room where space is limited. Two adults can share a full, but both will notice the tight quarters compared to a queen. At 75 inches long, a full is the same length as a twin — not ideal for anyone taller than about 6 feet 3 inches.

What is the minimum room size for a full mattress?

A full mattress fits comfortably in a room at least 9 feet wide by 10 feet long. That allows approximately 24 inches of clearance on one side and 18 inches at the foot — enough to walk around and open drawers. Rooms smaller than 9x10 feet typically work better with a twin.

Do full and double use the same sheets?

Yes. Sheets and bedding labeled "full" and "double" are identical and interchangeable. Both fit a mattress 54 inches wide by 75 inches long. Most retailers list them as "full/double" in their bedding sections.

Full Size Mattress Guide

A full mattress — also called a double — measures 54 inches wide by 75 inches long. It is 16 inches wider than a twin and 6 inches narrower than a queen, making it a good choice for single adults or guest rooms with limited space.

What are the dimensions of a full mattress?

A full mattress is 54 inches wide and 75 inches long, giving a single sleeper 54 inches of unshared space compared to the 38 inches on a twin. The length is the same as a standard twin (75 inches), which means it is not a good fit for anyone taller than about 6 feet 3 inches. If height is a concern, a queen or full XL (54x80 inches, less common) would be the better choice. Full mattresses are widely available in all major construction types: innerspring, foam, and hybrid.

How does a full compare to a twin and a queen?

Compared to a twin (38x75 inches), a full is 16 inches wider and the same length — that added width makes a meaningful difference for a solo adult who moves around while sleeping. Compared to a queen (60x80 inches), a full is 6 inches narrower and 5 inches shorter. For a couple sharing the bed, those 6 inches represent the difference between 27 inches per person on a full versus 30 inches per person on a queen. Full mattresses typically cost $200 to $800 depending on construction type and brand, compared to $300 to $1,200 for a comparable queen.

Who benefits most from a full mattress?

A full works best for: single adults who outgrew a twin but are furnishing a smaller room; teenagers making the first transition to an adult-size bed; and guest rooms that see occasional use where maximizing floor space matters more than premium sleeping real estate. Couples who both sleep in the bed regularly will find a full genuinely cramped compared to a queen — the total sleeping surface is 4,050 square inches on a full versus 4,800 square inches on a queen, nearly 20% more.

What room size does a full mattress require?

The minimum recommended room size for a full mattress is 9 feet wide by 10 feet long. A full bed frame typically measures about 56 inches wide by 77 inches long with the frame included, so a 9x10 foot room leaves roughly 26 inches on one side and 12 to 18 inches at the foot. A 10x10 or larger room allows comfortable clearance on both sides, which makes moving around and making the bed much easier.

Shop Full Size Mattresses at The Classy Home

Buying Tips

If you are taller than 6 feet, measure your current bed to see if your feet hang over the edge — if so, consider a queen (80 inches long) instead of a full (75 inches).
Full bed frames and headboards are widely available and generally priced lower than queen frames, which can partially offset the mattress cost difference.
For a guest room, a full size offers guests noticeably more space than a twin without requiring the room square footage a queen demands.
Check that full-size sheet sets include deep-pocket options if you plan to use a mattress topper — a 12-inch pocket depth covers most full mattresses plus a standard 2-inch topper.
Full mattress prices range from around $200 for basic innerspring to $800 for a quality foam or hybrid. Budget at least $350 for a foam full that will hold up reliably for 7 to 10 years.