Viewing Distance Calculator

How far to sit from a screen — by viewing angle, checked against its resolution.

What you provide

Result

Sit 8.8 ft–6.5 ft from a 65" 16:9 screen

6.5 ft is as close as THX recommends and 8.8 ft is the conservative SMPTE distance; anywhere between the two fills a comfortable share of your field of view. The resolution holds up throughout — pixels only become resolvable closer than 4.2 ft, which is nearer than you would sit anyway.

Diagnostic telemetry
Screen width
56.7 in
THX closest (40°)Nearer than this and you are turning your head to follow the picture
6.5 ft · 1.98 m
THX optimum (36°)
7.3 ft · 2.21 m
SMPTE reference (30°)The conservative cinema standard — the usual living-room answer
8.8 ft · 2.69 m
Pixels visible nearer thanWhere this resolution stops holding up at this size
4.2 ft · 1.29 m

What this cannot tell you

  • These are viewing-angle standards, not rules. SMPTE and THX describe how much of your field of view the picture should fill for cinema content; a room, a sofa and a person's preference all legitimately override them.
  • The pixel-visibility distance assumes 20/20 vision resolving one arcminute. Sharper eyes see structure closer than the figure says, and glasses that are out of date do the opposite.
  • Says nothing about picture quality. Contrast, brightness, upscaling and the quality of the source matter more than distance for anything that is not native resolution.
  • Room geometry is not considered. Seating position, height, glare and off-axis viewing angle all affect the result and none of them are in this calculation.

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Viewing Distance Calculator on RunTheTests — free browser-based device tools, no sign-up.