TV Mounting Height Calculator
Find the right height to mount a TV so the centre of the screen sits at a comfortable viewing angle.
Last updated · View algorithm, constants and default inputs (JSON)
About this calculator
Estimate a starting screen center and bottom edge from seated eye level and screen size. The formula assumes a 16:9 screen and places its center 8% of screen height below eye level. This is only a comfort heuristic; posture, recline, room layout, glare and preference can change placement.
Worked example
calculated with the default values below
Screen size (diagonal) 55 in · Seated eye level 42 in · Furniture height under the TV 24 in Screen height 27.0 in · Centre of screen from floor 39.8 in · Bottom edge of screen from floor 26.4 in · Clearance above furniture 2.4 in
General background references
Disclaimer
These calculators provide planning estimates only. Building codes, wiring regulations and safety requirements differ by country and change over time, and nothing here replaces a licensed professional or a permit. For structural, electrical or gas work, follow local code and have the installation inspected.
Implementation source
This record describes the implementation used by this page. It is not independent validation. External references, when available, support only the stated formula or definition; estimates and custom rules retain their own assumptions.
Formula and variables
h = 9S÷√337; C = E−0.08h; B = C−h÷2; X = B−H_s
- S
- TV diagonal (in)
- h
- Screen height (in)
- E
- Eye level from floor (in)
- H_s
- Stand height (in)
- C
- Mount centre height (in)
- B
- Mount bottom height (in)
Assumes a fixed 16:9 screen and places its center 8% of screen height below seated eye level; a starting heuristic, not a universal ergonomic rule.
Frequently asked questions
What screen shape does the estimate assume?
The screen-height formula assumes a 16:9 display. The center is set 8% of screen height below the seated eye level; this is a configurable-input estimate, not a universal ergonomic standard.