Candela to lumens calculator

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

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).

A full sphere has a solid angle of 4·π steradians, so a light source that uniformly radiates one candela in all directions has a total luminous flux of 1 cd·4π sr = 4π cd·sr ≈ 12.57 lumens.

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Candela to lumens calculator
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