Alien Civilization Calculator
Free estimate the number of communicative alien civilizations in our galaxy using the drake equation.
Drake Equation Parameters
Typical: 7 stars/year
Typical: 0.4 (40%)
Typical: 1
Typical: 1 (optimistic)
Typical: 0.01 (1%)
Typical: 0.2 (20%)
Typical: 10000 years
Results
Enter Drake equation parameters
Drake Equation
Formula
N = R* × fp × ne × fl × fi × fc × L
Where:
- • N = number of civilizations
- • R* = star formation rate
- • fp = fraction with planets
- • ne = planets suitable for life
- • fl = fraction developing life
- • fi = fraction with intelligence
- • fc = fraction communicating
- • L = civilization lifetime
Typical Estimates
- • Optimistic: 10-1000 civilizations
- • Moderate: 1-10 civilizations
- • Pessimistic: 0.0001-1 civilizations
- • Many unknown factors