It's a frequently-asked question that what is the best viewing distance of P16mm LED display, what is the best viewing distance of P7.62mm LED display? And in the same essential, "if I need a LED screen with viewers from 100m, from 20m, what pixel pitch LED display should I choose?"

Generally speaking, the viewing distance of a LED display is determined by 3 factors:

1. Pixel Pitch

2. Screen Size

3. LED Brightness

And as for most situation, pixel pitch plays the most important factor for a dedicated LED display. Here's the relationship between the viewing distance and pixel pitch, for your reference. And hope it would help to your selection of LED displays.

Indoor LED Display

P5mm LED Display------------------- Best Viewing Distance 3-28m

P6mm LED Display------------------- Best Viewing Distance 3.5-40m

P7.62mm LED Display------------------- Best Viewing Distance 4-42m

P8mm LED Display------------------- Best Viewing Distance 4.5-50m

P10mm LED Display------------------- Best Viewing Distance 5-55m

P12mm LED Display------------------- Best Viewing Distance 8-66m

Outdoor LED Display

P10mm LED Display------------------- Best Viewing Distance 5-55m

P12mm LED Display------------------- Best Viewing Distance 8-66m

P14mm LED Display------------------- Best Viewing Distance 12-80m

P16mm LED Display------------------- Best Viewing Distance 15-88m

P20mm LED Display------------------- Best Viewing Distance 20-110m

P25mm LED Display------------------- Best Viewing Distance 20-160m

P31.25mm LED Display------------------- Best Viewing Distance 30-300m

And note: above table is only for the standard size and resolution LED display, for example 256x192 pixels more. If we consider the huge or tiny LED displays, then we need to consider other factors. So the above table will be not accurate. But it would help to you in most circumstances.