Multiple factors determine the exact dimensions of a 55-inch television, but a normal wide format screen has a height of 26.96 inches and a width of 47.94 inches. A 55-inch diagonal conventional format display has a height of 33 inches and a width of 44 inches.
The height and width of displays with the standard 4:3 aspect ratio may be calculated for any size screen by multiplying the diagonal dimension by 0.6 and 0.8, respectively. The height and width of a widescreen display with a 16:9 aspect ratio can be calculated by multiplying the diagonal size by 0.49 and 0.87, respectively. Actual television dimensions depend on a number of factors, including the size of the television’s housing and the bezel that surrounds the screen.