A full size mattress, also known as a double mattress, typically measures 54 inches wide by 75 inches long (about 137 cm by 191 cm)
. This size provides 16 inches more width than a twin mattress, making it suitable for a single adult who wants extra space to stretch out or for smaller bedrooms and guest rooms. While a full mattress can accommodate two adults, it offers only about 27 inches of personal sleeping space per person, which can feel cramped for couples, especially those who prefer more room or sleep with pets or children
. The full mattress is smaller than a queen, which measures 60 inches by 80 inches, and is often chosen for its space efficiency in smaller rooms
. In summary, a full size mattress is:
- Width: 54 inches (137 cm)
- Length: 75 inches (191 cm)
- Best for: Single adults wanting extra space, teenagers, guest rooms, or small bedrooms
- Room size recommendation: Minimum about 10 x 12 feet for comfortable placement
This size strikes a balance between compactness and comfort for many living situations.
