How to Choose the Right LED Video Wall Pixel Pitch

Pixel pitch (sometimes called dot pitch) is the distance between the centres of two adjacent LEDs on a display, measured in millimetres. It is written as P followed by the distance — for example, P2.5 means the LEDs are 2.5mm apart.

Pixel pitch directly affects resolution: the smaller the pitch, the more LEDs per square metre, and the higher the resolution. A P1.5 wall has roughly four times as many LEDs per square metre as a P3.0 wall of the same size.

The fundamental rule is: the closer your audience, the finer the pitch you need. If viewers are standing 2 metres from the wall, a P4 display will look pixelated. If they are 10 metres away, a P4 display will look sharp.

A common guideline is to divide the minimum viewing distance in metres by 2 to estimate the suitable pitch in millimetres. For 3 metres, that suggests P1.5. For 6 metres, P3.0. For 10 metres, P5.0. This is a starting point — actual requirements depend on content type and how critical image sharpness is to the application.

Indoor LED walls typically use pitches from P1.2 to P4. Boardrooms, control rooms, and close-viewing environments use P1.2–P2.5. Atriums, lobbies, and retail spaces viewed from 4–8 metres use P2.5–P4.

Outdoor LED walls use wider pitches — typically P4 to P10 — because the audience is further away and the displays are larger. A P6 or P8 outdoor wall viewed from 15+ metres looks sharp, and the wider pitch keeps the cost manageable for large-format installations.

Finer pitch means more LEDs per square metre, which means higher cost. A P1.2 wall costs significantly more per square metre than a P4 wall of the same size. This is why it is important to choose the pitch that matches your viewing distance — over-specifying pitch wastes budget, while under-specifying results in a pixelated display.

The key is to identify the closest typical viewing distance for your installation, choose a pitch that delivers acceptable resolution at that distance, and avoid paying for resolution your audience will never see.

Brightness: indoor LED walls typically produce 800–1,200 cd/m². High-brightness indoor (for atriums or window-facing) produces 2,000+ cd/m². Outdoor produces 5,000–8,000 cd/m². Higher brightness adds cost.

Contrast ratio: higher contrast delivers deeper blacks and more vivid content. COB (Chip-on-Board) technology typically offers higher contrast than SMD, but at a higher price point.

Maintenance: consider front-service vs rear-service access. Front-service is essential if the wall is mounted directly against a solid surface with no rear access.

Choosing the right pixel pitch is a balance between resolution, viewing distance, and budget. We assess your space, audience distance, content type, and environment during a site survey, then recommend a pitch that delivers the right image quality without over-specifying.

We supply and install LED video walls UK-wide, with full turnkey service from survey through to content management. Call us on 020 4548 3736 to discuss your project.