TV Size Calculator
Work out the ideal TV size for your viewing distance, or the best distance to sit from a TV you already have — for 4K and 1080p.
General guidance. TV size and viewing distance figures are general guidance for typical eyesight and a 16:9 screen — not a precise fit for every room or every person.
Enter your viewing setup
Your recommended TV size or viewing distance, and the screen dimensions, appear here as you type.
How the recommendation is worked out
The ideal viewing distance depends on your TV's resolution — 4K packs four times as many pixels into the same screen as 1080p, so you can sit closer (or use a bigger screen at the same distance) before the extra detail stops making a visible difference. As a rule of thumb, the optimal viewing distance is about 1.5× the screen diagonal for 4K, and about 2.5× the diagonal for 1080p. We use that ratio to convert between viewing distance and recommended TV size in both directions. Screen width and height are estimated from the diagonal assuming a standard 16:9 widescreen panel.