Measure the screen diagonally How are TVs measured, anyway? When you see the touted size spec on a TV’s tag or in one of our write-ups, that size is always referring to the diagonal measurement ...

132.28 x 64.35 = 8,512.22mm² So yes, at 85.12cm², the Galaxy S8 has a significantly smaller display area than a 16:9 phone with the same diagonal screen measurement (which would be 92.16cm²).

However, since this measurement only refers to the diagonal screen size, it won't tell you the TV's actual height, width, or depth. Thankfully, these dimensions are also easy to measure.

The 40” measurement is based on the size of the screen from corner to corner on the diagonal. It sounds like you are measuring the width of the TV (including the frame?) to come up with 36”.

Take the square root of that number: √ (19,411,200) = 4,405.814 Divide that number by the diagonal screen measurement: 4,405,814 / 60 = 73.43 ...

(HDTV screens are always measured in the diagonal.) In fact, if you see the word "class" mentioned in reference to screen size on a TV ad, the seller may be trying to obscure a true, smaller size.

1. Choose the Right Screen Size for your Room Your seating distance will determine your sense of picture clarity and detail as well as the quality of the viewing experience. If all you watch are true ...

Their calculation uses TV screen height, which can be calculated as follows: Height = 0.490261239632559 x Diagonal Size Then multiply height by 1.5 for 4K TVs or 3 for 1080p HDTVs. Currently, Sony ...

At a standard HD aspect ratio, an 8-inch (diagonal) screen would measure 7 inches (horizontal) by 3.9 inches (vertical), or a bit wider than a standard Switch without Joy-Con's attached (about 6.8 ...