Enter the amount of precipitation and the total possible precipitation into the calculator to determine the precipitation percentage.

Precipitation Percentage Calculator

Enter any 2 values to calculate the missing variable


Related Calculators

Precipitation Percentage Formula

The following formula is used to calculate the precipitation percentage for a given amount of precipitation and total possible precipitation.

P = (A / T) * 100

Variables:

  • P is the precipitation percentage
  • A is the amount of precipitation
  • T is the total possible precipitation

To calculate the precipitation percentage, divide the amount of precipitation by the total possible precipitation. Multiply the result by 100 to convert it to a percentage.

What is Precipitation Percentage?

Precipitation percentage is a measure used to express the amount of precipitation (rain, snow, sleet, etc.) that has fallen as a percentage of the total possible precipitation. This metric is often used in meteorology and hydrology to understand and compare precipitation levels over different periods or regions. It helps in assessing the effectiveness of precipitation events and is crucial for water resource management, agriculture, and climate studies.

How to Calculate Precipitation Percentage?

The following steps outline how to calculate the Precipitation Percentage.


  1. First, determine the amount of precipitation (A).
  2. Next, determine the total possible precipitation (T).
  3. Next, calculate the precipitation percentage using the formula P = (A / T) * 100.
  4. Finally, calculate the Precipitation Percentage.
  5. After inserting the values 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.

Amount of precipitation (A) = 50 mm

Total possible precipitation (T) = 200 mm