Shannon Diversity Index Calculator
Calculate the Shannon-Wiener diversity index (H') to measure species diversity in ecological communities.
Input Parameters
Formula: H' = -Σ(pi × log(pi))
Where pi = proportion of species i
Evenness: J = H' / Hmax
Shannon Index (H')
1.8678
nats
Evenness (J)
0.8112
Effective Species
6.47
H'max
2.3026
Redundancy
18.9%
All Logarithm Bases
H' (natural log)1.8678 nats
H' (log₂)2.6947 bits
H' (log₁₀)0.8112 decits
Species Count10
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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.