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Shannon Diversity Index Calculator — Free Online Tool
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Shannon Diversity Index Calculator

Calculate ecological biodiversity using the Shannon-Wiener Index ($H^\prime$)

Ecology Formula: $H^\prime = -\sum \left(p_i \cdot \ln p_i\right)$, where $p_i$ is the proportional abundance of species $i$. Higher values indicate greater biodiversity. Enter your species counts below.
Species Abundance Parameters Input

Calculation Results

⚠️ The Shannon index accounts for both abundance and evenness of the species present in the community sample!

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