Simpson's Diversity Index Calculator

To calculate the Simpson's Diversity Index for an animal or plant community, first enter the number of different species. Then enter the observed frequencies in the calculator spreadsheet and click the Calculate button

Simpson's Diversity Index Calculator










This calculator uses the Simpson's Diversity Index formula:

Simpson's Index of Diversity formula

n = the total number of organisms of a particular species
N = the total number of organisms of all species


Simpson's Diversity Index explained