Enter the length (ft), the width (ft), and the water loss (inches) into the Pool Loss Calculator. The calculator will evaluate the Pool Loss. 

Pool Loss Formula

The following formula is used to calculate the Pool Loss. 

PL = L*W*WL*.6233


  • PL is the Pool Loss (gallons per day)
  • L is the length (ft) 
  • W is the width (ft) 
  • WL is the water loss (inches) 

To calculate pool loss, multiply the pool area by the total inches of water loss, then multiply by .6233.

How to Calculate Pool Loss?

The following steps outline how to calculate the Pool Loss.

  1. First, determine the length (ft).
  2. Next, determine the width (ft). 
  3. Next, determine the water loss (inches). 
  4. Next, gather the formula from above = PL = L*W*WL*.6233.
  5. Finally, calculate the Pool Loss.
  6. 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.

length (ft) = 20

width (ft) = 40

water loss (inches) = 2

PL = L*W*WL*.6233 =  ?