At a Glance
54 x 75 in
What are the dimensions of a Full (Double) size bed?
The dimensions of a full size mattress are 54 inches by 75 inches. A noticeable increase in width makes a full bed great for a larger teenager or a single adult. If you sleep with a pet, this size mattress will be much more enjoyable than a twin or twin XL. For comparison, many hotels put two full beds in a double room. They can comfortably fit a single adult with pets or two adults without pets.
Who is a Full mattress suitable for?
Full mattresses are a good pick for a single adult who enjoys more sleeping surface than a twin. The extra width allows back and stomach sleepers to stretch out. It is also a good fit for a guest room, especially if you often have partners visit. Two adults can be comfortable on this size bed for a few days, but it would be best to buy a larger size if the mattress is more permanent.
Full vs. Queen
A full mattress has a slightly smaller length and width than a queen size mattress. It is 6 inches less in width and 5 inches less in length. While both can fit two adults, the full is better for smaller sleepers or those without pets. A queen bed will allow a few more inches to stretch out or squeeze in a pet.
Full vs. TwinXL
If you're debating between a full mattress and a twin XL mattress, the main difference is the width. A full has an additional 16 inches across the surface, although it loses 5 inches in length compared to a twin XL. Single adults usually prefer a full size bed over a twin XL.