TV Mount Height Calculator
| Screen | Panel height | Bottom edge (40 in eye) |
|---|---|---|
| 55 in | 27.0 in | 26.5 in |
| 65 in | 31.9 in | 24.1 in |
| 75 in | 36.8 in | 21.6 in |
| 85 in | 41.7 in | 19.2 in |
The rule the calculator applies: the screen's center should sit at seated eye level - for most sofas that is about 40 inches (102 cm) off the floor. Given your TV's diagonal size, the calculator works out the panel's actual height (16:9 screens are about 49% of their diagonal tall), then places the bottom edge exactly where your eye line needs it - no neck tilt, no 'why did we mount it over the fireplace' regret.
The fireplace question deserves its honest answer up front: a mantel-mounted TV puts the center 60-70 inches high, forcing a 15-20 degree upward neck angle that ergonomic guidance says to keep under about 15 degrees. People do it anyway, and that is a fair trade if the room demands it - but it is a trade, not a best practice, and pulling the sofa forward or tilting the mount only softens the cost.
How to use
- Enter your TV's diagonal size in inches and your seated eye height (sofa eye level is typically 40 inches).
- Read the center-line height, the bottom-edge mount height, and the panel's actual height in inches.
- Mark the wall at the center-line height first - the bracket's own offset above or below it is the last step.
Frequently asked questions
How high should a 65-inch TV be mounted?
Center at seated eye level - about 40 inches (102 cm) if you watch from a sofa. A 65-inch 16:9 panel stands roughly 31.9 inches tall, so the bottom edge lands about 24 inches off the floor and the top about 56 inches. That looks lower than people expect on an empty wall; sit in your usual spot and have someone hold a cardboard cutout at that height before drilling - the empty wall lies.
What is the ideal viewing angle for a TV?
Keep the vertical viewing angle under about 15 degrees - eyes should land at or near screen center without tilting up or down, and the Society of Motion Picture and Television Engineers uses the same ceiling for theaters. Above roughly 15 degrees of sustained tilt, neck strain and the sense of 'watching up at it' set in, which is exactly what mantel mounting produces. Horizontal off-axis is a separate matter: keep your seat within about 30 degrees of the screen's center line for color and contrast to hold up.
Does TV size change the mount height?
Only the bottom edge moves - the center line stays at eye height no matter the panel. A 55-inch screen stands about 27 inches tall, so its bottom edge sits roughly 26 inches off the floor at a 40-inch center; an 85-inch is 41.7 inches tall, putting the bottom edge at about 19 inches. Bigger TV, lower bottom edge - which is why scaling up on the same wall pushes the screen closer to the console, not closer to the ceiling.
How do I factor in a tilting mount?
A tilting bracket changes the angle, not the geometry: the center line stays at eye height, and tilt buys forgiveness of 3-5 degrees if the mount must sit slightly high (above a soundbar, below a shelf). It does not rescue a mantel install - tilting hardware typically adjusts 5-10 degrees, half the mantel's problem. Measure the bracket's own vertical offset from its mounting points to the screen center and add that to the marked center-line height before drilling.