The dimensions of bed mattresses are 39-by-75 inches for twin-sized mattresses, 54-by-75 inches for full-sized mattress, 60-by-80 inches for queen-sized mattresses and 76-by-80 inches for king-sized mattresses. The California king-sized mattress is 72 inches wide and 84...
In order from smallest to largest, the five standard mattress sizes are twin, full, queen, king and California king. Twin mattresses are 38 inches wide by 75 inches long, full 53 inches by 75 inches, queen 60 inches by 80 inches, king 76 inches by 80 inches and the Cali...
Many online resources offer mattress dimensions, and Consumer Reports is one such resource. As of 2015, its website offers standard mattress dimensions for king, California king, queen, full and twin size mattresses.
A standard full size mattress is 54 inches wide by 75 inches long. This type of mattress is commonly referred to as a double or standard mattress and was commonly used by two adults when room sizes were smaller.
A standard king size mattress is 76 inches wide and 80 inches long, giving sleep partners 38 inches of horizontal space. A California king size mattress takes up the same surface area, but it is 72 inches wide and 84 inches long.
A standard king mattress measures 76 inches wide by approximately 80 inches long. The width and length of a king bed are about the same as can be achieved by pushing two extra long twin beds together.
A double bed, also known as a full-sized mattress, is 54 inches wide by 75 inches long. Some mattresses in the double bed range may be slightly smaller than the given dimensions in order to fit into the bed frame.