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.

* 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:   $
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.