Enter the gallons per minute and the area (ft^2) into the Calculator. The calculator will evaluate the Gpm To Precipitation Rate. 

Gpm To Precipitation Rate Formula

PR = GPM * 96.3 / A


  • PR is the Gpm To Precipitation Rate (in/hr)
  • GPM is the gallons per minute
  • A is the area (ft^2)

To convert Gpm To Precipitation Rate, divide 96.3 by the area in square feet, then multiply by the gallons per minute.

How to Calculate Gpm To Precipitation Rate?

The following steps outline how to calculate the Gpm To Precipitation Rate.

  1. First, determine the gallons per minute. 
  2. Next, determine the area (ft^2). 
  3. Next, gather the formula from above = PR = GPM * 96.3 / A.
  4. Finally, calculate the Gpm To Precipitation Rate.
  5. 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.

gallons per minute = 300

area (ft^2) = 900