LED Pixel Pitch Guide: How to Choose the Right Pitch
Pixel pitch is the single most consequential number in an LED display specification. Get it right and nobody ever thinks about it again. Get it wrong and you have either wasted 40% of your budget on resolution nobody can see, or installed a screen that looks like a dot matrix from where people actually stand — and neither can be fixed after installation.
What pixel pitch actually means
Pixel pitch is the distance in millimetres from the centre of one LED pixel to the centre of the next. P3.91 means 3.91mm between pixel centres. Smaller number, more pixels per square metre, higher resolution, higher cost.
The cost relationship is not linear — it is closer to the square. Halving the pitch quadruples the pixel count, and price tracks pixel count more than area. Going from P6 to P3 on the same physical screen size can double or triple the cost.
The rule that gets you 90% of the way there
Minimum comfortable viewing distance in metres ≈ the pitch number.
A P4 display looks clean from 4 metres. A P10 display needs 10 metres. Closer than that and the eye starts resolving individual pixels — the image stops being a picture and becomes a grid of dots.
The rule comes from human visual acuity. A person with 20/20 vision resolves about one arcminute of detail, which works out to roughly 0.3mm at one metre. Set the pitch so pixels fall below that angular size at your viewing distance and the image reads as continuous.
Pitch by viewing distance
| Closest viewer | Recommended pitch | Typical application |
|---|---|---|
| Under 1 m | P0.4–P1.2 | Control rooms, broadcast, specification desks |
| 1–2 m | P1.2–P1.9 | Reception walls, meeting rooms, retail feature |
| 2–4 m | P1.9–P3.91 | Lobbies, showrooms, storefront at pavement |
| 4–8 m | P3.91–P6 | Retail interiors, church platforms, restaurants |
| 8–15 m | P6–P10 | Atriums, large stages, hotel facades |
| 15–30 m | P10–P16 | Building facades, mall atriums across the void |
| Over 30 m | P16+ | Road-facing signage, stadium perimeter |
Measure the closest viewer, not the average
This is where most specifications go wrong. A church might have a congregation seated 8 to 25 metres from the platform screen — but the front row is at 8 metres, and the front row is where the people who complain sit. Specify for 8 metres.
The exception is when the closest position is genuinely transient. Someone walking past a facade screen at 2 metres is not evaluating image quality; they are walking. Specify for where people stop, not where they pass through.
Check the resolution the pitch gives you
Once you have a candidate pitch, calculate the actual pixel count. Screen width in mm ÷ pitch = horizontal pixels.
- A 4m wide screen at P10 = 400 pixels across. Less than a quarter of 1080p. Fine for a logo and three words; useless for anything detailed.
- The same 4m screen at P2.5 = 1,600 pixels across. Comfortably above 1080p, sharp for video and readable text.
If your content includes small text, live TV, spreadsheets or detailed graphics, run this calculation before you commit. Plenty of screens are specified correctly for viewing distance and still disappoint because the resolution cannot carry the content.
Transparent displays: pitch also sets transparency
On transparent LED there is a second consequence. Finer pitch means the LED strips sit closer together, which means less open area between them. Transparency drops as pitch tightens.
| Pitch | Transparency | Trade-off |
|---|---|---|
| P2.6 | ~65% | Sharpest image, glass looks noticeably tinted |
| P3.91 | ~75% | Best all-round balance for storefronts |
| P6 | ~82% | Glass still reads as glass |
| P10 | ~90% | Nearly invisible when off |
| P16 | ~95% | Effectively clear glass, very coarse image |
So on a transparent project you are balancing three things, not two: viewing distance, content detail and how much you need to see through the glass. Usually one of the three has to give, and it is better to decide which one deliberately than to discover it after installation.
When seams matter more than pitch
At very close viewing distances — reception desks, control rooms, handover bays — the limiting factor stops being pitch and becomes the joint between panels. A perfectly specified P1.2 wall still shows a visible grid under flat colour if the cabinets meet mechanically.
This is the case for TFT glass-based Micro LED, where chips are bonded onto a glass substrate and module gaps come down to around 20 microns — roughly thirty times below what the eye can resolve at 2 metres.
Five mistakes worth avoiding
- Buying finer pitch than the distance needs. Nobody standing 15 metres away can tell P6 from P3. You paid double for nothing.
- Specifying to the average viewing distance. Always specify to the closest regular position.
- Using one pitch across positions with different distances. A mall atrium and its lift lobby should not share a specification.
- Ignoring content resolution. Correct pitch for the distance, wrong resolution for the content, is still a failed screen.
- Forgetting that transparency moves with pitch. Only applies to transparent products, but it catches people constantly.
Not sure? Send us the numbers
Give us the screen size, the distance to the closest regular viewer and a description of the content, and we will tell you the pitch we would specify and why — including when a coarser, cheaper pitch is the right answer. Use the quote page or see solutions by application for worked examples in specific environments.
If you are starting from scratch and have not yet fixed the screen size, work through our step-by-step method for choosing pixel pitch from viewing distance first — it sizes the screen before it picks the pitch.