Frequently Asked Questions

The Chinese Gender Calendar, also known as the Chinese Birth Chart or Chinese Gender Predictor, is a traditional folklore method used to predict the gender of an unborn baby. It is based on the mother's lunar age at conception and the lunar month in which conception occurred. According to legend, it originated during the Qing Dynasty (1644-1911).

The Chinese Gender Calendar has no scientific basis and is not a reliable predictor of baby gender. Scientific studies have shown its accuracy is around 50%, which is the same as a random guess or flipping a coin. It should be used for entertainment and cultural interest only, not for making any important decisions.

Lunar age is calculated differently than Western age. In the traditional Chinese system, a baby is considered 1 year old at birth (accounting for time in the womb), and everyone's age increases by one year at Chinese New Year, not on their birthday. This means your lunar age is typically 1-2 years older than your Western age.

Our calculator handles this automatically. Generally, if you were born before the Chinese New Year in your birth year, add 2 years to your Western age. If you were born after Chinese New Year, add 1 year. The exact calculation depends on the specific Chinese New Year dates.

You can use: (1) The exact conception date if known, (2) The first day of your last menstrual period (LMP) - our calculator adds 14 days to estimate conception, or (3) For IVF, use the embryo transfer date.

Yes, you can select the "IVF / Embryo Transfer" option in our calculator and enter your transfer date. The transfer date is used as the conception date for the prediction. Remember this is for entertainment purposes only.

There is no single "official" Chinese Gender Chart. Different sources publish slightly different versions based on various historical interpretations. Our calculator follows the chart version widely published online. The variations are minor and all versions are equally valid as folklore tools.

Our calculator currently supports conception dates from January 29, 2025 through January 25, 2028, covering the Chinese lunar years of 2025, 2026, and 2027.

Yes, the gender prediction chart itself never changes - it's the same matrix of lunar ages and months. What changes each year is how Gregorian (Western) calendar dates correspond to lunar months, because Chinese New Year falls on a different date each year.

The Chinese Gender Calendar gives one prediction based on the conception details. For twins, it would give the same prediction for both, but in reality, fraternal twins can be different genders. This is another reason why the chart should be used for fun only.

No. A baby's biological sex is determined by which sperm (carrying an X or Y chromosome) fertilizes the egg. This is a random process not influenced by the mother's age or the time of year. The only reliable ways to determine baby gender are medical tests like ultrasound, amniocentesis, or NIPT.