Shannon Diversity Index Calculator
Calculates the Shannon Diversity Index (H') to quantify species diversity in a community. The index considers both the number of species and the evenness of their distribution.
Shannon Diversity Index Calculator gives you a faster way to work through practical calculation scenarios without rebuilding the same calculation from scratch every time. Start with Number of Species (S), Abundance of Species 1 (n1), Abundance of Species 2 (n2), and Abundance of Species 3 (n3) and use the live outputs to estimate Total Number of Individuals (N), Proportion of Species 5 (p5), and Proportion of Species 4 (p4) in one pass. This page is built to help you compare scenarios quickly, validate rough assumptions, and move into a related calculator when you need a second angle on the same problem.
Use The Calculator In A Few Steps
Work through the inputs deliberately, then compare outputs instead of relying on a single scenario.
Scenario Checks
Use these examples to verify the behavior of the calculator before you run your own values.
What Users Usually Need Next
Keep the calculator open while you skim these answers so you can test the scenario that matters.
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