Biodiversity Index Calculator
Calculate Shannon-Wiener, Simpson's, and Margalef biodiversity indices from species count data for conservation assessment.
Inputs
hectares
Results
Shannon-Wiener Index (H')
3.11
Biodiversity Rating
High Biodiversity
Simpson's Diversity (1-D)0.95
Simpson's Reciprocal (1/D)18.18
Pielou's Evenness (J)0.97
Margalef's Richness Index3.86
Berger-Parker Dominance0.16
Species Density2.5 species/ha
Predicted Species (2× area)30
Species Richness25
How to Use This Calculator
- Enter the total species count (S) and total individual organisms counted (N) in your sample.
- Input the count of the most abundant (dominant) species.
- Set the sample area and number of distinct habitat types.
- Review the Shannon-Wiener Index (H') and Simpson Diversity to characterize biodiversity.
- Use the evenness score to assess how evenly individuals are distributed across species.
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