TV Mount Height Calculator
Enter your TV size and how high your eyes sit when seated to find the ideal mounting height — where the middle of the screen lands at eye level — plus the best viewing distance.
The single most important rule for mounting a TV is that the middle of the screen should sit at your eye level when you're seated — that's the most comfortable, neck-friendly viewing position. From there it's just arithmetic: work out how tall the screen is, and the bottom edge is half that below the center.
How to work out TV mounting height
Set the screen's center at your seated eye level (about 42 inches for a typical sofa). The screen's height is roughly 49% of its diagonal for a 16:9 TV, so the bottom edge sits half a screen-height below the center.
Center height = Seated eye level
Bottom edge = Center − (Screen height ÷ 2)
| Input | Typical value |
|---|---|
| Seated eye level (sofa) | 40–44 in |
| Seated eye level (bar stool / kitchen) | 48–52 in |
| Screen height factor (16:9) | 0.49 × diagonal |
Recommended bottom-edge height by TV size
Assuming a 42-inch seated eye level, here's roughly where the bottom of the TV lands.
| TV size | Bottom edge above floor |
|---|---|
| 43 in | ≈ 31 in |
| 55 in | ≈ 28.5 in |
| 65 in | ≈ 26 in |
| 75 in | ≈ 24 in |
Worked example
A 55-inch TV with a 42-inch seated eye level:
| Screen height = 55 × 0.49 | 26.9 in |
| Center at eye level | 42 in |
| Bottom edge = 42 − 13.5 | 28.5 in |
How far away should you sit?
For comfortable viewing, sit about 1.5 to 2.5 times the screen's diagonal away — closer for a more immersive, cinematic feel, farther for relaxed everyday watching. The calculator shows that range in feet for your TV. Remember the mount's bracket sits behind the panel, so measure the bottom-edge height on the actual TV, not the bracket, when marking the wall.