Lighting

Lux to Candela Calculation — ChiefEngineer.in

Worked step-by-step example. Convert illuminance to luminous intensity at a distance. Open interactive calculator →

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Result

Intensity
2000 cd

Formula

I = E × r²

Variables

  • E — illuminance (lx)
  • r — distance (m)
  • I — intensity (cd)

Worked Example

Input: 500 lx, r = 2 m

Result: I = 2000 cd

Assumptions & Notes

Point-source, perpendicular surface.

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