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Mutation Rate Calculator

🧬 Genetics & evolution. Use the Mutation rate formula to find mutation rate, mutations, bases, generations: pick the value you want, type the others, and the answer updates as you go.

μ=mutationsbases×generations\mu = \dfrac{\text{mutations}}{\text{bases} \times \text{generations}}
Mutation rate1.2 × 10⁻⁸ per base per generation

Pick the ○ next to the value you want to find, fill in the others, and it solves as you type.

What each letter means

QuantityUnit
Mutation rateper base per generation
Mutationsno unit
Basesno unit
Generationsno unit

Worked example

Find the mutation rate when Mutations = 72, Bases = 3 × 10⁹, Generations = 2.

Using μ = mutations/(bases × generations): Mutation rate = 1.2 × 10⁻⁸ per base per generation.

Frequently asked questions

What is the formula for Mutation rate?

μ = mutations/(bases × generations).

What do the letters stand for, and what units are used?

Mutation rate in per base per generation, Mutations, Bases, Generations.

How do you calculate mutation rate?

Put the values into μ = mutations/(bases × generations). For example, with Mutations = 72, Bases = 3 × 10⁹, Generations = 2, mutation rate = 1.2 × 10⁻⁸ per base per generation.

Can I solve for a different value?

Yes. In the calculator above, pick the circle next to any value (mutation rate, mutations, bases, generations) and fill in the others: it rearranges the formula for you.

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