Species-Area Calculator

Predict species richness using the species-area relationship for biodiversity assessment.

Parameters

Known Species

Reference Area (ha)

Current Area (hectares)

Target Area (hectares)

Z-Value (slope)

Typical: 0.15-0.35. Islands: ~0.25-0.35, Mainland: ~0.15

Habitat Type

Current Area

Target Area

Change: +10 species (18.9%)

Double Area Effect

If area doubles

+10 (18.9%)

Half Area Effect

If area halves

-9 (15.9%)

90% Habitat Loss

Extinction prediction

-43.8% species

C (constant)16.9227

Z-value PatternTypical island pattern

Min Area for 48 sp64.73 ha

Formula: S = c * A^z where S = species, A = area, c = constant, z = slope

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MyCalcBuddy Editorial Team

This page is maintained as an educational calculator reference.

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Formula Source: Standard Mathematical References

by Various

ðŸ”„Last reviewed: May 2026

âœ“Formula checks are based on standard references and internal QA review.