Enter screen size and resolution to get THX, SMPTE, and 4K UHD recommended viewing distances — the range where you see every pixel without tracking fatigue.
Viewing Distance Calculator is a free, browser-based screen testing tool that runs the full check instantly in your web browser.
The same 65-inch TV feels like a drive-in from across the room and like an IMAX from 6 feet away. Viewing distance controls how much of your visual field the screen fills (field-of-view in degrees), which in turn determines immersion, eye comfort, and whether your extra 4K pixels are even visible. Sit too close and you see pixel structure plus feel tracking fatigue. Sit too far and you waste both immersion and resolution.
For a 55-inch TV, 4K pixels start to become invisible past roughly 7 feet. So if you sit 10 feet from your 55-inch TV, buying 4K is a waste — you'll see the same image 1080p would give you. Rule of thumb: to see 4K benefits, sit within 1.5 × screen_height. Most living rooms with typical 8-foot couch-to-TV distances only benefit from 4K on 65-inch+ panels.
Desktop monitors are used much closer (typically 24-30 inches) than TVs (7-10 feet), which is why 27-inch 1440p is the productivity sweet spot — you're well within the resolving distance for that resolution. 32-inch 4K is the next step up, at roughly the same arm's-length distance but with sharper text. For gaming, 27-inch 1440p at 2-2.5 feet gives about 50° horizontal FoV — narrower than cinema but intense enough for FPS.
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