Viewing distance calculator
Slide the pixel pitch and see where the image holds together — the fastest way to pick a pitch that matches where your audience actually stands.
The wall is at the left edge; markers show where each viewing experience begins.
Minimum distance
2.5 m
Closer and the image visibly breaks into pixels
Comfortable
5 m
Where most content reads cleanly
Pixels invisible
8.6 m
20/20 vision can no longer resolve the grid
The formula
minimum distance (m) ≈ pitch (mm) × 1 · comfortable ≈ pitch × 2 · pixels invisible ≈ pitch × 3.44 (20/20 visual acuity).
Working backwards: pitch ≤ nearest viewer distance in metres is the safe upper bound.
Worked example
A lobby wall whose nearest viewers stand 3 m away:
Any pitch up to 3 mm holds up at the closest point; 1.5 mm puts those viewers at the comfortable distance; beyond ~10 m even 8 mm reads cleanly.
Pick the coarsest pitch your nearest viewer allows — it is the single biggest cost lever in the whole project.
Frequently asked
- What is the 1 mm = 1 m rule?
- The quick industry heuristic: the minimum viewing distance in metres roughly equals the pixel pitch in millimetres. At 2.5 mm pitch, closer than 2.5 m the image visibly breaks into pixels.
- Minimum, comfortable, invisible — which do I design for?
- Design for where your real audience stands. Retail passers-by brushing the wall need the minimum honored; a boardroom's first row should sit at the comfortable distance (≈ 2× pitch); pixels vanish entirely for 20/20 vision at ≈ 3.44× pitch.
- Is a finer pitch ever a waste of money?
- Often. If the nearest viewer is 8 m away, a 2.5 mm and an 8 mm wall look identical from there — but the 2.5 mm one costs several times more. Pitch should follow the nearest realistic viewer, not the spec sheet.
- Does brightness change the viewing distance?
- Not the geometry, but it changes comfort: an over-bright wall viewed close is fatiguing. Indoor walls are typically run at 200–700 nits despite much higher rated peaks.
Design the whole wall
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