Selecting the correct size TV is an important part of your purchase decision. If you get a TV that is too large for the space, you will not be able to take the whole picture in. More importantly, many feel eyestrain from being too close.
A good rule of thumb is divide the distance from your eyes to the front of the TV by 2.5. For example, if I were to watch TV and while sitting my eyes are nine feet from the screen, a rule of thumb would be to get a screen size of 43â€ (9 feet x 12 inches = 108 inches / 2.5 = 43.2â€ diagonal screen.) Again, this is just a rule of thumb. Again, this is just a rule of thumbâ€”but should give you a starting point when shopping for a TV.