Punnett Square Calculator
Generate Punnett squares to visualize and predict the outcomes of genetic crosses.
Parent 1 Alleles
Parent 2 Alleles
Punnett Square
| A | a | |
|---|---|---|
| A | AA | Aa |
| a | Aa | aa |
Genotype Frequencies:
AA1/4 (25%)
Aa2/4 (50%)
aa1/4 (25%)
Phenotype Frequencies:
Dominant3/4 (75%)
Recessive1/4 (25%)
About Punnett Squares
A Punnett square is a diagram used to predict the genotypes of offspring from a genetic cross. It shows all possible combinations of alleles from both parents. Use uppercase letters for dominant alleles and lowercase for recessive alleles.
💡
Help us improve!
How would you rate the Punnett Square Calculator?
Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
📚
Formula Source: Standard Mathematical References
by Various
🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.