Enter the total water needed (gallons) and the sprinkler flow rate (gallons/min) into the Calculator. The calculator will evaluate the Sprinkler Run Time.

## Sprinkler Run Time Formula

SRT = TW / FR

Variables:

• SRT is the Sprinkler Run Time (min)
• TW is the total water needed (gallons)
• FR is the sprinkler flow rate (gallons/min)

To calculate Sprinkler Run Time, divide the total water required by the sprinkler flow rate.

## How to Calculate Sprinkler Run Time?

The following steps outline how to calculate the Sprinkler Run Time.

• First, determine the total water needed (gallons).
• Next, determine the sprinkler flow rate (gallons/min).
• Next, gather the formula from above = SRT = TW / FR.
• Finally, calculate the Sprinkler Run Time.
• 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.

total water needed (gallons) = 500

sprinkler flow rate (gallons/min) = 4.6