Lumens to candela calculator

Enter luminous flux in lumens: lm
Enter apex angle in degrees: º
   
Luminous intensity result in candela: cd

The lumen is a measure of the total "amount" of visible light. The lumen is the SI derived unit of luminous flux (symbol: lm).

The candela is power emitted by a light source. it is the SI base unit of luminous intensity ( symbol: cd).

Lumen to candela formula:

candela = lumens / ( 2π(1 - cos(degrees/2)) )

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Lumens to candela calculator
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