TV Mounting Height Calculator

The rule this page uses is the one installers start from: the centre of the screen sits at seated eye level, which puts the vertical viewing angle at zero. Give it the screen size, the aspect ratio and your seated eye height and it returns the centre, bottom and top edge heights above the floor, the panel's own width and height, and the seating distance range that the THX and SMPTE viewing angles suggest. A second mode handles a height you are stuck with, over a fireplace being the usual case, and measures the angle from your eye up to the screen centre against the 15 degrees THX gives as a ceiling. Measure your own eye height rather than taking the 42 inch default, because a low sofa moves everything with it.

Calculator Type
Units
The screen size, the eye height, the centre height and the seating distance are all read in whichever you pick. Every answer gives both either way.
The advertised size, measured corner to corner across the picture, in inches.
Measure it: sit where you watch from and measure floor to eye, in inches. An adult on an ordinary sofa is usually 40 to 44 inches. Left blank it is 42 inches.
Widget
Units
The screen size, the eye height, the centre height and the seating distance are all read in whichever you pick. Every answer gives both either way.
The advertised size, measured corner to corner across the picture, in inches.
Measure it: sit where you watch from and measure floor to eye, in inches. An adult on an ordinary sofa is usually 40 to 44 inches. Left blank it is 42 inches.
Widget
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