About the Hardy-Weinberg Calculator
An allele frequency, genotype frequency, and equilibrium testing calculator, in your browser.
What it is
The Hardy-Weinberg Calculator applies pยฒ + 2pq + qยฒ = 1 to find genotype frequencies from a known allele frequency, or to test whether observed genotype counts are consistent with Hardy-Weinberg equilibrium using a chi-square test. It's built for genetics and evolutionary biology coursework.
Features
Two modes
Calculate from an allele frequency, or test observed genotype counts for equilibrium.
Chi-square equilibrium test
Compares observed and expected genotype counts against the critical value at ฮฑ=0.05.
Full allele and genotype breakdown
See p, q, and all three genotype frequencies at once.
Step-by-step working
See the exact formula and substitution used to reach every result.