Lighting Layout Estimator

    Estimate the number of fixtures needed to light an area to a specified light level.

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


    * Required
     
    * Square footage of area to be lit:    
    * Desired footcandles:    
    * Average number of hours on per year:    
    * Watts per fixture:    
    * Number of lamps per fixture:    
    * Rated mean lumen per lamp:    
    * Ballast factor (BF) :    
    * Coefficient of Utilization (CU) :    
    * Your electric cost per kilowatt hour:   $
     
      Calculate

    Results
    Estimated number of fixtures needed:    
    Estimated number of lamps needed:    
    Estimated fixture spacing:    
    Watts per square foot:   watts
    Total power load:   kW
    Energy cost per year:  
    Note: This estimator does not include Light Loss Factors (LLF) from ambient temperature, voltage, dust, and tarnishing.