Disclaimer
Educational estimates only
This calculator provides educational estimates based on simplified genetic models. Actual inherited traits can be more complex, and results are not guaranteed. This tool is not medical advice.
Our calculators use simplified models of inheritance. Many traits, including hair and eye color, are influenced by many genes, and visible traits cannot show which genes a parent carries. Results describe what is likely or possible for families like yours, not what will happen for a particular child.
Not medical or genetic advice
Nothing on this website is a diagnosis, a genetic test or a substitute for professional care. For questions about your health, your pregnancy, inherited conditions or blood type compatibility, please speak with a qualified healthcare professional or a genetic counselor.
Not a paternity test
Results must not be used to question or confirm a child's parentage. Unexpected traits happen naturally, and simplified models cannot account for every genetic variation. Only accredited DNA testing can answer parentage questions.
Accuracy and updates
We base our tools on published research and explain every rule on our methodology page. Science changes, and we may update models over time. We cannot guarantee that the content is complete or free from error.