is a full bed the same as a double
Michael Wood II, Purchaser, Retailer and Researcher of Mattresses and Sleep Products. A double and a full size are the same thing. Just different terminology. You'll find that a full size bed - through Google, etc - is 55 Wide x 75 Long. The mattress is usually an inch (or slightly more) smaller in each direction, so; your full mattress will normally measure at (average) 53.5 x 74 - the additional space is to insure that you have room to tuck sheets, etc.