Enter the number of occurrences and the number of events into the Calculator. The calculator will evaluate the Rate Per 100000. 

Rate Per 100000 Formula

RP100K = O/E * 100,000


  • RP100k is the Rate Per 100000 ()
  • O is the number of occurrences
  • E is the number of events

To calculate the Rate Per 100000, divide the number of occurrences by the number of events then multiply by 100,000.

How to Calculate Rate Per 100000?

The following steps outline how to calculate the Rate Per 100000.

  1. First, determine the number of occurrences. 
  2. Next, determine the number of events. 
  3. Next, gather the formula from above = RP100K = #O/#E * 100,000.
  4. Finally, calculate the Rate Per 100000.
  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.

number of occurrences = 4

number of events = 8