Shannon Diversity Index Calculator

Calculate the Shannon-Wiener diversity index (H') to measure species diversity in ecological communities.

Input Parameters

Species Abundances (comma-separated)

Logarithm Base

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%

H' (natural log)1.8678 nats

H' (log₂)2.6947 bits

H' (log₁₀)0.8112 decits

Species Count10