Luminaire Replacement Estimator

    Replacing your current lamps? Use this calculator to estimate the number of luminaires you'll need with replacement lamps. Also compare the difference in the amount of light between your current lamp and replacement lamp.

    Enter the following information and click "calculate".
    Your results will display below.


    * Required
     
    * Number of existing luminaires:  
     
    Current Lamp
    * Number of lamps per luminaire:  
    * Lamp mean lumens:  
    * Ballast factor (BF) :  
    * Coefficient of Utilization (CU) :  
     
    Replacement Lamp
    * Number of lamps per luminaire:  
    * Lamp mean lumens:  
    * Ballast factor (BF) :  
    * Coefficient of Utilization (CU) :  
     
      Calculate
    Results
    The replacement lamp...
     Will result in a change in average light level.
     Will require   luminaires to maintain the same average light level.
     
    Compare amount of light:
      Current Lamp Replacement Lamp
    Source mean lumens per luminaire:  
    Usable mean lumens per luminaire: