Advanced options
The rule: screen CENTRE at seated eye level, ~107cm for a standard sofa: almost every TV in Britain is mounted too high (the over-fireplace neck-crane is the national example). The bracket's plate sits BELOW the TV's centre: measure your TV's actual hanger position before drilling, not the bracket box's promise. Masonry plugs or into studs: a 20kg TV on plasterboard anchors alone is a countdown.
What The TV Mounting Height Calculator Works Out
- Screen centre height: the one rule is screen centre at seated eye level. For a standard UK sofa that is about 105-110 cm from the floor (the calculator uses 107 cm); for propped-up bedroom viewing 115-125 cm. The over-fireplace install puts the centre 30-50 cm too high and turns every film night into gentle upward supplication.
- Bottom edge / top edge: the centre height plus and minus half the panel height. Panel height is about 49% of the diagonal in the 16:9 era, so a 55-inch set is roughly 68 cm tall and its bottom edge sits around 73 cm, startlingly low to anyone calibrated by the national habit of mounting high.
- Mark the wall: strike the centre line, offer the TV up on the bracket, and check from the actual sofa before the final tighten.
- Exact size and your eye height (advanced): enter an in-between screen size and measure your own seated eye height (sit normally, tape from floor to eye) to replace the presets. Low sofas and tall people move the right answer by 10 cm either way.
- Bracket hanger height (advanced): the wall plate mounts below the panel's centre by an amount that varies per television. Measure from your TV's hanger hooks to its centre and enter it; the calculator gives the height to drill at, which is the step that prevents most drilling regret.
- Viewing angle (advanced): enter the height you are tempted to mount at (150 cm above a fireplace is common) and your viewing distance, and the calculator gives the angle your neck must hold to look at the screen centre and top edge. Ergonomic guidance keeps the centre within about 15 degrees of level; a tilting bracket mitigates a high mount without fixing the geometry, and pull-down mantel mounts exist for exactly this national dilemma.
- Ideal distance for this size (advanced): 1.0 to 1.5 x the diagonal for 4K content (THX and SMPTE guidance), 1.5 to 2.5 x for HD. A 55-inch set is best viewed from about 140-210 cm; most UK living rooms sit further back, which argues for a bigger screen rather than a higher one.
- Screen width (advanced): the panel width from the diagonal and aspect ratio, so you can check an alcove or chimney breast with room to spare for cables and a soundbar.
- Fixings for this weight (advanced): fixing advice scaled to the TV's weight. Under 10 kg heavy-duty plasterboard anchors will hold; 10-25 kg wants studs or masonry; heavier panels need expansion anchors or a stud-spanning plate, and full-motion arms multiply the load at the wall.