Full Mattress Dimensions. Shop full xl size mattresses. These beds have the same length as a twin bed 75 inches but they are 16 inches wider.

Dimensions of a full size mattress. 60 x 80 152 5cm x 203 5cm. 76 x 80 193cm x 203 5cm.
Both terms refer to mattresses measuring 54 inches by 75 inches.
A full mattress is the first size that can accommodate couples. If you are in a relationship this may not be the best choice for you as the fit will be exceedingly tight. While it ll offer a lot of space for single sleepers couples will be a bit more cramped. This size works well for tall active sleepers who want the largest size intended for single person use.