Simpson Index Calculator
Calculate Simpson's diversity index and related measures of community diversity and dominance.
Input Parameters
Simpson's D: Σ[n(n-1)/N(N-1)]
Diversity (1-D): Probability different species
Reciprocal (1/D): Effective species count
Note: Simpson's D ranges from 0 to 1, where higher values indicate lower diversity (more dominance).
Simpson's Diversity (1-D)
0.8051
Higher = more diverse
Simpson's D
0.1949
Reciprocal (1/D)
5.13
Gini-Simpson
0.7996
Evenness
0.5131
Community Analysis
Species Count10
Total Individuals146
Berger-Parker Index0.3425
Dominant Species50 individuals
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Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
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Formula Source: Standard Mathematical References
by Various
🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.