Enter the expected depreciation into the Calculator. The calculator will evaluate the Light Loss. 

Light Loss Formula

LLF = 1 - ED


  • LLF is the Light Loss ()
  • ED is the expected depreciation

To calculate Light Loss, subtract the expected depreciation from 1.

How to Calculate Light Loss?

The following steps outline how to calculate the Light Loss.

  1. First, determine the expected depreciation. 
  2. Next, gather the formula from above = LLF = 1 – ED.
  3. Finally, calculate the Light Loss.
  4. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

expected depreciation = 0.809