Calculating Store LED Screens: Pitch, Modules, and Costs

Where to Start When Calculating a Store LED Screen?

The first step in calculating an LED screen for a store is always to measure the storefront area or the intended wall space, not to choose the technology first. Measure the available width and height in meters, leaving a safe margin, before deciding on the pixel pitch based on the distance of passersby or customers within the shop. A common rule of thumb used by technicians is: minimum pixel pitch (mm) is approximately equal to the viewing distance (meters) divided by 3. Incorrect measurement at this stage will lead to inaccuracies in all subsequent calculations for modules, power consumption, and costs.

Customers standing close — at a checkout counter, indoor showroom, or fashion boutique, viewing from 2–3 meters — require a small pitch like P1.5–P2.5 so that text and product prices are not pixelated. Storefronts on pedestrian streets viewed from 4–6 meters are suitable for P2.5–P4. Large street-facing billboards viewed from 6 meters and beyond are adequately served by P4–P6 outdoor modules. Quickly look up terms in the LED Dictionary or delve deeper into the article on how to choose pixel pitch by distance.

!Retail store facade using an LED screen to display brand content

Measuring and Margining the Facade

The actual installable area is always smaller than the facade because space must be reserved for the frame, borders, and technical clearances. A 4-meter wide facade typically accommodates a screen of 3.2–3.84 meters in width. Accurate measurement in meters helps you convert to a whole number of cabinets, which is crucial for subsequent steps. Also, note the distance from the typical customer viewing position to the screen to finalize the pitch, as this is the most important input data, preceding all choices of brands or LED panel types.

How to Determine Actual Resolution from Pixel Pitch?

The actual resolution of a store's LED screen is directly derived from its dimensions and pixel pitch, not marketing figures. Divide the width in millimeters by the pixel pitch to get the number of horizontal pixels, and do the same for the height. For example, a 3,840mm wide screen with a P4 pitch has 960 horizontal pixels; if it's 1,920mm high, it has 480 vertical pixels, resulting in an actual resolution of 960×480. This is the true number of pixels that display content, determining the sharpness of text and images.

This figure also reveals the physical constraints when aiming for standard resolutions. To achieve 1920 horizontal pixels at a P4 pitch, the screen width must be 7.68 meters — too large for most shopfronts. Therefore, stores wanting to display sharp Full-HD content in a small area must opt for a smaller pitch, such as P2.5 or P1.5. This is why the article advises choosing the pitch based on both viewing distance and target resolution, not just price.

!Creative-shaped LED screen installed in a retail space to attract customers

Pixel Density Per Square Meter

Pixel pitch also determines pixel density, calculated by dividing one million by the square of the pitch in millimeters. P1.5 yields approximately 444,000 pixels per square meter, P2.5 only 160,000, and P4 around 62,500. This figure explains why, for the same facade area, a small-pitch screen displays significantly more detail. When a shop needs to show price lists, product codes, or brand videos with high clarity, pixel density is a metric to consider before finalizing the configuration.

How to Calculate the Number of Cabinets and Modules for a Facade?

The number of cabinets or modules required is calculated by dividing the screen dimensions by the dimensions of a single cabinet, as LED screens are assembled from standard modules and cannot be cut. Divide the screen width by the cabinet width to get the number of horizontal cabinets, and divide the screen height by the cabinet height to get the number of vertical rows. Then, multiply these two numbers. For example, a 960×960mm cabinet for a 3,840×1,920mm screen requires (3,840÷960) × (1,920÷960) = 4×2 = 8 cabinets. Always round up, as the screen must be an integer multiple of the cabinet size.

Common cabinet sizes include 960×960mm, 640×480mm for small indoor pitches, and 960×960 or 1,000×1,000mm for outdoor applications. Choosing the cabinet size first and then finalizing the overall screen dimensions helps avoid shortages of half-panels. A 3.84m wide facade can be perfectly fitted with 4 cabinets of 960mm horizontally — this is why many practical configurations result in neat numbers like 4×2 or 6×3. View completed projects to visualize cabinet assembly for different scales.

!Exhibition showroom using a large-format LED screen assembled from multiple cabinets

Why Must the Screen Be a Multiple of the Cabinet Size?

Each cabinet is an independent hardware unit with its own power supply, receiving card, and mounting points, so it cannot be split. If the facade dimensions are not an integer multiple of the cabinet size, you must either slightly reduce the screen dimensions or switch to a smaller cabinet model to achieve a perfect fit. This is the core difference between modular LED screens and monolithic LCD panels: LED screens offer flexibility in overall size but are constrained by cabinet increments. Correct calculation from the start prevents excess or insufficient mounting frames and power supplies.

How Much Power and What Power Supply is Needed?

The power consumption of a store's LED screen is estimated by multiplying the area by the average consumption per square meter, and this is often overlooked in cost projections. Indoor screens typically consume about 150–300W per square meter at peak brightness, while average operating power is usually one-third of the peak, as content rarely fills the entire screen with white. High-brightness outdoor screens consume more, around 300–500W per square meter at peak, to achieve 5,000–6,000 nits for sun glare resistance.

From this figure, you can calculate the appropriate circuit breaker, wire gauge, and backup power. A 6m² P6 outdoor billboard might draw 600–800W at maximum brightness during the day, translating to several hundred dollars in electricity costs per month if operated for many hours — consider an auto-brightness sensor to reduce brightness at night. For stores requiring continuous operation, choose power supplies and controllers with sufficient capacity and redundancy. Refer to NovaStar processors for stable control.

Don't Forget the Signal Processor

Sufficient pixels are useless if the processor is weak, limiting input resolution and the ability to scale 4K sources or split screens for advertising content. The sending card and processor from NovaStar or Pixel Hue determine the capability to integrate multiple sources — laptops, cameras, advertising players — simultaneously. For storefronts running only repetitive advertisements, a basic controller is sufficient; however, showrooms requiring multi-source projection necessitate investing in a more powerful processor to avoid signal bottlenecks.

How to Estimate the Cost of a Store LED Screen?

The cost of a store's LED screen is estimated across four categories. The most transparent approach is to itemize each part rather than providing a vague all-inclusive quote. The first category is the LED panels, priced per square meter and pixel pitch — smaller pitches are exponentially more expensive due to higher chip density. The second category includes the processor and sending card. The third covers the mounting frame, power supplies, and electrical materials. The fourth is the installation labor and color calibration upon handover. Larger areas may have a lower per-square-meter unit price, but the total cost still increases.

As prices vary based on specific configurations, the most accurate method is an on-site survey followed by a detailed quote. You can use the area and cost calculator tool for an initial estimate, compare it with pre-configured price lists per m², and then contact the technical team for a site survey. For stores requiring high clarity for close viewing, consider COB models like the BOE BYH-COB P0.9; for facades viewed from further away, SMD outdoor panels are more economical and sufficient.

How Much More Does a Smaller Pitch Cost?

The price difference based on pitch is substantial: a COB P0.9 can be three to four times more expensive than an SMD P2.5 of the same area, due to the much higher number of chips per square meter. Therefore, choosing a pitch appropriate for the actual viewing distance is not just a technical consideration but also a direct budget saver. Installing a P1.5 on a facade viewed from 5 meters means overpaying for clarity that the eye cannot perceive at that distance. Revisit the divide-by-3 rule at the beginning of this article to determine the optimal pitch before comparing prices among suppliers.

Conclusion: What is the Correct Calculation Order?

In summary, calculate in the correct order: first, measure the storefront area and viewing distance, divide by 3 to get the minimum pitch, determine the actual resolution from the pitch, divide the screen dimensions by the cabinet size to get the number of modules, estimate power consumption based on area, and finally, project costs across the four categories. Shops with close viewing distances should choose P1.5–P2.5, pedestrian streets P2.5–P4, and large street-facing billboards P4–P6 outdoor. Always round up the number of cabinets, ensure adequate backup power, and select a sufficiently powerful processor. For specific configuration advice for your storefront, contact the Luxwave technical team for a site survey and detailed quotation.