Selection Coefficient Calculator
Calculate selection coefficient from relative fitness.
Selection Coefficient measurements
Enter your values, then calculate.
Result
How to calculate selection coefficient
Selection coefficient in population genetics measures the reduction in relative fitness of a genotype compared to the most fit genotype in the population.
How the calculation works
Selection coefficient = 1 − Relative fitness.
Example
A genotype with a relative fitness of 0.7: 1−0.7 = 0.3.
Frequently asked questions
How is Result calculated?
Result = 1 − [Relative fitness].
Is the Selection Coefficient Calculator free to use?
Yes — every calculator on Simple Calculator Tools is free, runs in your browser, and does not require an account.
Selection Coefficient Calculator
Selection coefficient = 1 − Relative fitness.
Let's understand your selection coefficient result.
Calculate a result above and this guide will help you interpret it using this calculator's own formula and explanation.
Pro Tips for Selection Coefficient
- Selection coefficient ranges from 0 (no selective disadvantage, same fitness as the most fit genotype) to 1 (complete selective disadvantage, zero reproductive success).
- This value is directly derived from relative fitness — calculate relative fitness first if you don't already have it.
Common Selection Coefficient Mistakes to Avoid
- Confusing selection coefficient (measuring disadvantage) with relative fitness itself (measuring advantage) — they're inversely related but represent different concepts.
When to Use This Calculator
Selection coefficient in population genetics measures the reduction in relative fitness of a genotype compared to the most fit genotype in the population.