Enter the total number of organisms of all species found and the number of species identified into the calculator to determine the Biodiversity Index. This calculator can also evaluate any of the variables given the others are known.

## Biodiversity Index Formula

The following formula is used to calculate the Biodiversity Index.

BI = N / S

Variables:

- BI is the Biodiversity Index
- N is the total number of organisms of all species found
- S is the number of species identified

To calculate the Biodiversity Index, divide the total number of organisms of all species found by the number of species identified. The resulting quotient is the Biodiversity Index.

## What is a Biodiversity Index?

A Biodiversity Index is a quantitative measure used to assess and compare the diversity of biological species in a given ecosystem, region or particular habitat. It takes into account the number of different species (species richness) and the evenness of species’ distribution. A higher biodiversity index indicates a greater diversity of life forms, which is often associated with a healthier and more sustainable ecosystem.

## How to Calculate Biodiversity Index?

The following steps outline how to calculate the Biodiversity Index.

- First, determine the total number of organisms of all species found (N).
- Next, determine the number of species identified (S).
- Next, gather the formula from above = BI = N / S.
- Finally, calculate the Biodiversity Index.
- 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 number of organisms of all species found (N) = 500

number of species identified (S) = 20