Formula
p=(2AA+Aa)/(2N); q=1−p.
- Use the units shown beside each field.
- Results update automatically whenever you change an input.
- Displayed values use up to four decimal places, or scientific notation for very small or large numbers. Calculations use standard floating-point arithmetic; exact integer and fraction tools identify their own precision rules.
- One diploid biallelic locus. No equilibrium assumption is required to count observed allele frequencies.
Example Calculation
Example inputs
- AA individuals: 30
- Aa individuals: 40
- aa individuals: 30
AA individuals = 30; Aa individuals = 40; aa individuals = 30. Primary result: 0.5.
Frequently asked questions
How do I use this calculator?
Enter aa individuals, aa individuals, aa individuals. The result updates automatically. Use Reset to restore the example values.
What method does it use?
p=(2AA+Aa)/(2N); q=1−p.. One diploid biallelic locus. No equilibrium assumption is required to count observed allele frequencies.
Why might a rounded result differ?
The calculation keeps full numeric precision internally, then rounds the displayed result. Rounding intermediate steps by hand can produce a slightly different answer.
Are my inputs saved online?
No. This calculator processes your inputs in your browser. A recently used list stores only calculator names on this device, not your entered values.
Check the assumptions and units before using this result. Read about calculation methods.