Enter the total amount of precipitation (in) and the total amount of time (hrs) into the Precipitation Rate Calculator. The calculator will evaluate the Precipitation Rate. 

Precipitation Rate Formula

The following two example problems outline the steps and information needed to calculate the Precipitation Rate.

PRR = P / T

  • Where PRR is the Precipitation Rate (in/hr)
  • P is the total amount of precipitation (in) 
  • T is the total amount of time (hrs) 

How to Calculate Precipitation Rate?

The following example problems outline how to calculate Precipitation Rate.

Example Problem #1:

  1. First, determine the total amount of precipitation (in). 
    • The total amount of precipitation (in) is given as: 3.
  2. Next, determine the total amount of time (hrs). 
    • The total amount of time (hrs) is provided as: 2.
  3. Finally, calculate the Precipitation Rate using the equation above: 

PRR = P / T

The values provided above are inserted into the equation below and computed.

PRR = 3 / 2 = 1.5 (in/hr)


Example Problem #2: 

For this problem, the variables required are provided below:

total amount of precipitation (in) = 4

total amount of time (hrs) = 1

Test your knowledge using the equation and check your answer with the calculator..

PRR = P / T = ?