Species Diversity Index Calculator
Calculate Shannon-Wiener (H'), Simpson's Diversity Index, and evenness from species abundance data for up to 10 species.
Inputs
Results
Shannon Index (H')
1.79
Simpson's Diversity (1-D)
0.8
Simpson's Reciprocal (1/D)4.93
Pielou's Evenness (J)0.86
Species Richness (S)8
Total Individuals (N)136
Berger-Parker Dominance0.33
How to Use This Calculator
- Enter the individual count for each species (up to 10) from your quadrat or transect survey.
- Review Shannon Index (H') — higher values indicate greater diversity.
- Check Simpson's Diversity (1-D) for a probability-based complement to dominance.
- Note Pielou's Evenness (J) — values near 1 mean all species are equally abundant.
- Use these indices to compare diversity between sites, seasons, or treatment conditions.
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