The dimensions of any particular sleeper sofa will be primarily determined by two factors.
Standard sofa bed width.
Double or full size bed.
76 inches wide by 80 inches long.
It will measure approximately 84 inches wide and be about 90 inches long when the bed is opened up.
When it s opened up to a bed two people can sleep comfortably and as a sofa it comfortably seats three people.
54 inches wide by 80 inches long queen size bed.
Shelf depth for a general purpose bookshelf is usually 10 to 12 inches.
Shelf depth is determined by the size of the items to be stored generally within the range of 6 to 24 inches.
While twin is considered the standard name in the us for a mattress that measures 39 inches by 75 inches other parts of the world favor the term single for a bed with the same dimensions.
First of course will be the bed size within.
While there are some common sizes like a queen sofa bed mattress 60 72 a full sofa bed mattress 52 72 and a twin sofa bed mattress 35 72 many of the sleeper take unique sizes.
The average arm height is 25 inches and the distance between arms is 63 inches.
When opened up a queen sized sleeper sofa measures approximately 84 inches wide and 90 inches long.
Full sized sleeper sofas are very often found in large living rooms and studio apartments.
The average sofa bed mattress thickness is 4 5 thus being half as thick as a good standard mattress.
After determining the mattress size the next factor in your sofa s overall size will be the style as sofas with smaller more compact arms will have smaller dimensions than sofas with larger arms.
60 inches wide by 80 inches long eastern king size bed.
Although most sofa beds use a queen short mattress measuring 60 72 other common sizes include 58 72 54 72 and 52 72.
The average width of a full sized sleeper sofa is 78 inches.
A queen size sleeper sofa can easily seat three and can provide a comfortable bed for two people.
Wherever you go 39 x 75 is the standard size for a bed designed for one person.
The depth is 38 inches and the height is 36 inches.
Standard sizes of sofas sofas vary in size from 6 to 8 feet long and 32 to 40 inches deep for a standard size sofa to 4 to 6 feet long and 28 to 30 inches deep for a loveseat.