Planning an event or installation and considering an LED screen display rental? Whether you need an indoor LED screen for a conference or a massive LED video wall rental for a concert, accurate technical planning is crucial. This guide provides fundamental calculation formulas and real-world case studies to help you specify your indoor LED screen display requirements, whether you're looking for an LED screen on hire or purchasing your own.
Understanding these calculations ensures you get the right equipment, power, and setup for a flawless show. Let's dive in.
The optimal viewing distance is key for audience experience. A general rule:
Optimal Viewing Distance ≈ Pixel Pitch (mm) × (1000~3000)
Minimum Viewing Distance = Pixel Pitch (mm) × 1000
Example for an indoor LED screen with P1.5 pitch:
Optimal Distance ≈ 1.5mm × 3000 = 4.5m
Minimum Distance = 1.5mm × 1000 = 1.5m
Knowing this helps select the right led display screen hire for your space.
For a module/unit board:
Pixels (Length) = Module Length ÷ Pixel Pitch
Pixels (Width) = Module Width ÷ Pixel Pitch
Example: A P2 module measuring 320x160mm:
Pixels (Length) = 320mm ÷ 2mm = 160
Pixels (Width) = 160mm ÷ 2mm = 80
Resolution = 160 x 80
For a screen built from modules:
Cards (Length) = Total Modules (Length) ÷ Modules per Card (Length)
Cards (Height) = Total Modules (Height) ÷ Modules per Card (Height)
Case Study: A P4 (80 * 40) screen, 27 modules long, 18 high, using a 256x512 card.
Cards (Length) = 27 ÷ (256÷80) = 9
Cards (Height) = 18 ÷ (512÷40) ≈ 2
Total Receiving Cards = 9 x 2 = 18
This is vital when configuring a rental LED video wall system.
Ports Needed = (Total Modules × Module Pixel Count) ÷ 650,000
Case Study: A 4.8m x 1.6m P2.5 screen (320x160mm modules).
Total Modules ≈ 150
Pixels/Module = (320÷2.5) x (160÷2.5) = 8192
Ports Needed = (150 x 8192) ÷ 650,000 ≈ 2
Your LED video wall on rent will require a processor with at least 2 network ports.
Screen Size (16:9 Ratio): For a ~100m² indoor LED screen display:
Length ≈ 13.33m, Width ≈ 7.5m
Module Count: For a 13m x 9m P2.5 screen (0.32m x 0.16m modules):
Modules (Length) = 13m ÷ 0.32m ≈ 41
Modules (Height) = 9m ÷ 0.16m ≈ 57
Total Modules = 41 x 57 = 2337
Power Supplies (Non-Cabinet): = Total Modules ÷ Modules per Supply
Example: 486 modules, 6 modules/supply → 81 supplies needed.
Cabinet Count: = (Screen Length ÷ Cabinet Length) x (Screen Height ÷ Cabinet Height)
These calculations are essential for led rental packages to ensure safe and stable operation.

Max Power/m² = Modules/m² × Module Power
Distribution Power/m² = Max Power/m² ÷ 0.78 ÷ 0.85
Total Screen Power = Distribution Power/m² × Total Area
Total Current = Total Screen Power ÷ 220V
If Current > 30A, use three-phase power.
Single-Phase Current = Total Current ÷ 3
Case Study for an LED wall rental: 20.48m² P2.5 screen.
Distribution Power/m² = 694W/m²
Total Power = 694W × 20.48 ≈ 14,213W
Total Current = 14,213W ÷ 220V ≈ 65A → Requires 3-Phase.
Single-Phase Current = 65A ÷ 3 ≈ 21.6A → Cable Required: 4mm².
Case Study for a large video wall rental: 1500 P8 panels.
Total Current ≈ 288A → Requires 3-Phase.
Single-Phase Current = 96A → Cable Required: 35mm².

Whether you're managing an LED display hire for a one-off event or sourcing a permanent led video wall rental, these formulas are indispensable. Proper calculation ensures correct led screen indoor viewing experience, electrical safety, and system stability. For your next led wall on rent or led screen rental project, use this guide to specify your needs accurately.
Need a quote or expert advice on your next LED screen on hire? Contact our team today for a seamless led rental or led display hire experience, from indoor led screen solutions to large-format led video wall hire.