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Fixture Replacement Calculator

Replacing your current lamps? Use this calculator to estimate the number of fixtures 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.

* Number of existing fixtures:    
 
Current Lamp
* Number of lamps per fixture:    
* Lamp mean lumens:    
* Ballast factor (BF):    
* Coefficient of Utilization (CU):    
 
Replacement Lamp
* Number of lamps per fixture:    
* Lamp mean lumens:    
* Ballast factor (BF):    
* Coefficient of Utilization (CU):    
  Click to calculate

Results

The replacement lamp…
 Will result in a   change in average light level.
 Will require   fixtures to maintain the same average light level.
 
Compare amount of light:
  Current Lamp        Replacement Lamp
Source mean lumens per fixture:         
Usable mean lumens per fixture:         

* Required