Allele Frequency Calculator (Hardy-Weinberg)
Compute allele and genotype frequencies from genotype counts.
Enter all three genotype counts.
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How to use this calculator
Enter the observed counts for each genotype. The calculator returns allele frequencies (p, q) and the expected Hardy-Weinberg genotype frequencies.
Formula / method used
p = (2×AA + Aa) / 2N, q = 1 − p, p² + 2pq + q² = 1