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Calcimator

Performance Lighting Calculator

Fixture count and power from stage area and effects.

Inputs

Results

Front wash fixtures

10

Total fixtures

56

Stage area (m²)96
Back light fixtures24
Side light fixtures12
Specials10
Total power (kW)32.2
Total amps (208V)154.81
DMX channels56
DMX universes1
Fixture NameConventional
Total Amps20268.33
Dimmer Circuits56
How to Use This Calculator
  1. Enter stage width (m) and stage depth (m) for your performance space.
  2. Set the target light level (lux) — 500–800 for drama, 1000–1500 for dance/musical.
  3. Select fixture type (1 = Conventional 575W, 2 = LED ~150W, 3 = Moving Head ~350W).
  4. Review Number of Fixtures needed, Total Power (kW), and Circuit Load.
  5. Use the fixture count to plan your lighting rig, dimmer racks, and cable runs.

How the result changes with Throw distance (m)

Throw distance (m)Front wash fixturesTotal fixtures
4.81561
12955
20854
271460

What each input means

Stage width (m)
Width of the performance stage in metres.
Stage depth (m)
Depth of the stage from front to back.
Target light level (lux)
Desired illumination at stage level (500-800 drama, 1000-1500 musical/dance).
Fixture type (1-3)
1 = Conventional (575W), 2 = LED (~150W), 3 = Moving Head (~350W).
Throw distance (m)
Distance from lighting position to the stage (front of house to stage centre).

What each result means

Stage area (m²)
Total stage area.
Front wash fixtures
Number of fixtures for the primary front wash.
Back light fixtures
Fixtures for back lighting (separation and depth).
Side light fixtures
Fixtures for side/cross lighting from both wings.
Specials
Focused specials for solos, set pieces, and effects.
Total fixtures
Total fixtures for a complete lighting rig.
Total power (kW)
Total electrical power draw at full intensity.
Total amps (208V)
Current draw at 208V theatrical power.
DMX channels
Total DMX channels needed for all fixtures.
DMX universes
Number of DMX universes (512 channels each).

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Stage width (m) = 12, Stage depth (m) = 8, Target light level (lux) = 800, Fixture type (1-3) = 1 = 5 input(s) provided
  2. Calculate Front wash fixtures
    Front wash fixtures
    10 = 10
  3. Calculate Total fixtures
    Total fixtures
    56 = 56
  4. Calculate Stage area
    Stage area = stageWidthM * stageDepthM
    96 = 96
  5. Calculate Back light fixtures
    Back light fixtures
    24 = 24

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