How to use the mutation rate calculator
Estimate mutation rate per base per generation. Enter mutations observed, genome length, generations in the fields above; the mutation rate per base per generation, per genome per generation are computed instantly and plotted on the chart so you can see how the answer changes.
Formula
Variables
- mut — Mutations observed
- gl — Genome length (Mb)
- gens — Generations
Worked example
With mutations observed = 60, genome length = 3000 Mb, generations = 1, the calculator gives mutation rate per base per generation ≈ 1 × 10⁻⁸; per genome per generation ≈ 60.
Frequently asked questions
What is the formula for the mutation rate calculation?
Mutation rate per base per generation = mut / (gl × 1e6 × 2 × gens). Per genome per generation = [Mutation rate per base per generation] × gl × 1e6 × 2. Here mut is mutations observed, gl is genome length (Mb), gens is generations.
What inputs do I need for the mutation rate calculator?
You need mutations observed, genome length in Mb, generations. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use this calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.