Punnett Square Calculator

Calculate genetic trait probabilities with a Punnett square. Free, easy-to-use tool for students and educators.

Parent 1
Enter the genotype of the first parent (e.g., AA, Aa, or aa)

Parent 2
Enter the genotype of the second parent (e.g., AA, Aa, or aa)

Trait Information

How to use Punnett Square Calculator

  1. Select the first parent's genotype for your trait.
  2. Choose the second parent's genotype for the same trait.
  3. Click the 'Calculate' button to generate the Punnett square.
  4. Review the results table showing genotype and phenotype probabilities.

Features

  • Supports monohybrid and dihybrid cross calculations.
  • Generates clear, color-coded Punnett square diagrams instantly.
  • Provides detailed probability breakdowns for genotypes and phenotypes.
  • Explains genetic principles and terminology for educational use.
  • Accessible on any device with a web browser, no installation needed.

Who Is This Tool For?

This tool is essential for students learning Mendelian genetics, teachers creating lesson materials, and hobbyist breeders predicting offspring traits in plants or animals.

Why Calculate Genetic Probabilities?

A Punnett Square Calculator is a fundamental tool for predicting inheritance patterns, allowing users to visualize allele combinations and statistically determine the likelihood of specific genetic traits appearing in offspring. This is crucial for academic study, agricultural planning, and understanding basic heredity principles in biology.

Frequently Asked Questions

Is this Punnett Square Calculator free?

Are my genetic inputs stored or shared?

How do I use the Punnett Square Calculator?

Can I calculate probabilities for complex traits?

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