This calculator uses the Drake Equation to estimate the number of active extraterrestrial civilizations in the Milky Way galaxy. It's designed for astronomy enthusiasts and researchers interested in the search for extraterrestrial intelligence (SETI).
Drake Equation Calculator
Results
Estimated Number of Civilizations
0
Data Source and Methodology
All calculations are based on the Drake Equation, formulated by Dr. Frank Drake in 1961. It is a probabilistic argument used to estimate the number of active, communicative extraterrestrial civilizations in the Milky Way galaxy. Learn more about the Drake Equation.
The Formula Explained
The Drake Equation is: N = R* × fp × ne × fl × fi × fc × L
Formula (LaTeX) + variables + units
This section shows the formulas used by the calculator engine, plus variable definitions and units.
Formula (extracted LaTeX)
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Variables and units
- T = property tax (annual or monthly depending on input) (currency)
Sources (authoritative):
- Learn more about the Drake Equation. — en.wikipedia.org · Accessed 2026-01-19
https://en.wikipedia.org/wiki/Drake_equation
Changelog
Version: 0.1.0-draft
Last code update: 2026-01-19
Last code update: 2026-01-19
0.1.0-draft · 2026-01-19
- Initial audit spec draft generated from HTML extraction (review required).
- Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
- Confirm sources are authoritative and relevant to the calculator methodology.