How to calculate the size of LED display?

LED screens are ubiquitous in our daily lives, including display screens, broadcast screens, and more. But do you know how to calculate LED size?

In this issue, we'll explore how to calculate LED screen size.

This article focuses on four key areas:

1. Calculating the size of each LED screen unit

2. Calculating indoor LED screens

3. Calculating outdoor LED screens

4. Calculating the viewing distance of an LED screen

This article summarizes common calculations used in LED screen projects. Let's take a look.

1. Model and calculation of each unit board

01. Common Models and Dimensions of LED Unit Boards

LED screens are generally made of unit boards. Common models and dimensions (in mm) of LED unit boards are as follows:

02. So how is it calculated? Let's use the P10 and P16 as examples, as they are the most common.

PH16 Single Unit Board Dimensions: 

For a P16 module, the typical LED pitch is 16 dots long and 8 dots wide, while the P16's pitch is 16mm. 

Therefore, the calculations are: Length = 16 dots x 1.6cm = 25.6cm; Height = 8 dots x 1.6cm = 12.8cm.

PH10 Single Unit Board Dimensions: 

For a P10 module, the typical LED pitch is 32 dots long and 16 dots wide, while the P10's pitch is 10mm. 

Therefore, the calculations are: Length = 32 dots x 1.0cm = 32cm; Height = 16 dots x 1.0cm = 16cm. 

The data is the same as above, so generally, you don't need to calculate these; just remember the information in the image above.

2. Calculation of indoor LED screen

After understanding some of the basic data above, we can take a look at an example. For example: If you need an indoor full-color LED screen with a length and width of 4m and 3m respectively, using a P10 screen, how do you calculate its actual length and height?

Some friends may not understand what this question means. Since we already have the length and width, why do we need to calculate it? Because the LED large screen is composed of multiple unit boards, so we need to calculate how many unit boards are needed for a large screen with a length of 4m and a width of 2m.

01. First, calculate the required length and height (divide the total screen length by the unit length, rounding to the nearest integer). Length: Based on the basic data of the P10,

the number of modules required is:

Length: 4m/0.32m = 12.5 modules ≈ 13 modules.

Width: 3m/0.16m = 18.7 modules ≈ 19 modules.

Because the smallest unit of a module is 1, round up to the nearest integer.

02. Actual length and height (multiply the required number of unit boards by the size of a single unit board): 

Length: 13 * 0.32 = 4.16m, Width: 19 * 0.16 = 3.04m

03. Actual LED screen area: 

Therefore, the LED length is 4.16 * 3.04m.

3. Calculation of outdoor LED screen

Walking down the street, we often see rectangular LED displays playing advertisements on the entrances of banks and shops. These are often referred to as doorway LED screens, LED strips, scrolling LED screens, or storefront LED displays. So, what are the specifications for doorway LED displays? How do you determine screen size? They're generally similar to those used indoors.

01.For example, a shop wants to customize a P10 monochrome LED display (320*160) with a scrolling screen measuring 3.5 meters in length and 0.8 meters in width. How can we calculate the actual dimensions of the LED display for the storefront?

Length: 3.5m ÷ 0.32 = 10.9375 ≈ 11. 

Height: 1m (rounded to the nearest 0.8m) ÷ 0.16 = 6.25 ≈ 6.

02. Actual length and height (multiply the required number of unit panels by the size of a single unit panel): 

Length: 11 x 0.32 = 3.52m 

Height: 6 x 0.16m = 0.96m 3. 

Actual LED screen area: 3.52m x 0.96m = 3.3792㎡

It's worth noting that doorway LED displays also have frame sizes. Since frame profiles come in a variety of sizes, a common frame thickness is 9cm. Add 3.5cm to the width (per side);

Alternatively, add 4.5cm to the width (per side). Assuming a 3.5cm frame,

then the length and width of the doorway LED display are as follows:

Total screen length: 3.52m + 0.035*2 = 3.59m

Total screen height: 0.96m + 0.035*2 = 1.03m

Thus, the actual screen area is: 3.59m × 1.03m = 3.6977㎡

If you find this calculation troublesome, you can also use our free calculation tools to estimate the area, price cost, etc.

4. Calculation of LED screen viewing distance

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