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Calcimator

LED Sign Power Calculator

Calculate pixel count, power consumption, circuit requirements, and annual energy cost for LED signs.

Inputs

Results

Total Pixels

29,403

Max Power Draw

1,784 W

≈ 30 laptops

Circuit Load (120V)14.9 A
Annual Energy6,251 kWh
How to Use This Calculator
  1. Enter sign width (ft) and height (ft) and the pixel pitch (mm).
  2. Review total pixels, power (W), circuit amperage, and annual kWh.
  3. Check annual electricity cost at your local rate.
  4. Ensure the electrical service can support the sign's peak draw plus 25% capacity headroom.
  5. Outdoor LED signs typically consume 100-400W per square foot depending on brightness requirements.

How the result changes with Pixel Pitch (mm)

Pixel Pitch (mm)Total PixelsMax Power Draw
5.888,2001,784 W
1513,1221,784 W
274,0501,784 W
362,2111,784 W

What each input means

Sign Width (ft)
Overall width of the LED display panel in feet
Sign Height (ft)
Overall height of the LED display panel in feet
Pixel Pitch (mm)
Distance between LED pixel centers — smaller pitch = higher resolution (outdoor: 10-20mm, indoor: 2-6mm)
Brightness (nits)
Peak brightness in nits (outdoor: 5000-8000, indoor: 800-2000)

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Sign Width (ft) = 8, Sign Height (ft) = 4, Pixel Pitch (mm) = 10, Brightness (nits) = 5000 = 4 input(s) provided
  2. Calculate Total Pixels
    Total Pixels
    29403 = 29403
  3. Calculate Max Power Draw
    Max Power Draw
    1784 = 1784
  4. Calculate Circuit Load
    Circuit Load
    14.9 = 14.9

Engine last updated . Checked against 3 independently-derived tests — how we verify calculators.

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