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Hardy-Weinberg Calculator

Genotype frequencies from one allele frequency.

Compute the expected genotype frequencies (AA, Aa, aa) under Hardy-Weinberg equilibrium from a single allele frequency.

Daniel Oh By Daniel Oh
Reviewed by Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

If p is the frequency of allele A and q = 1 − p, then under HWE: p² + 2pq + q² = 1.

In depth

Compute the expected genotype frequencies (AA, Aa, aa) under Hardy-Weinberg equilibrium from a single allele frequency.