Entertainment only. This is a traditional chart, not a medical
or scientific instrument. Its accuracy is about that of a coin toss. It is not
a substitute for anything a clinician can tell you, and it should not be used
to make any decision.
The traditional Chinese gender predictor, read from the mother’s lunar (nominal) age and the lunar month of conception.
How it works
Enter two ordinary Gregorian dates. The app does the Chinese lunar-calendar conversion on-device using astronomical new moons and solar terms — so the conversion is exact, and it has been validated against Chinese New Year dates from 2019 to 2026, leap years included. It then highlights your cell on the 28×12 chart.
Your data
The two dates you type stay in your browser. Nothing is uploaded, and no account is involved.