Chinese Gender Predictor Calculator
Use this traditional method by entering the mother's lunar age at conception and the lunar conception month.
For entertainment only. This is not a medical or scientific test.
What is a Chinese gender calculator?
A Chinese gender calculator is a traditional prediction tool used to guess whether a baby may be a boy or a girl. It is based on two inputs: the mother’s lunar age and the lunar month when conception happened. Many families enjoy using it as a fun cultural tradition during pregnancy.
There are multiple versions of the chart and formulas online, so results can differ depending on the method used. This page uses a simple and commonly shared traditional rule to generate a prediction instantly.
How to use this calculator
- Enter the mother’s lunar age at conception.
- Select the lunar conception month (1 to 12).
- Click Predict Gender to see your result.
Important input tip
Most people know their regular (Gregorian) age, not lunar age. Lunar age is often one to two years different depending on birthday and lunar new year timing. For the most meaningful prediction, convert your age and conception month to lunar values first.
How the prediction is calculated
This tool follows a well-known traditional rule:
(49 + lunar month - lunar age + 19)
If the final value is even, the prediction is boy. If odd, the prediction is girl. This simplifies to a parity check and is one of several traditional methods shared in popular culture.
Is the Chinese gender chart accurate?
Not in a scientific or medical sense. The Chinese gender calculator is a folklore method and should be treated as entertainment. Real fetal sex determination requires medical methods such as ultrasound or genetic testing performed by qualified professionals.
- Fun for baby shower games and family conversation.
- Not a replacement for prenatal care.
- Not guaranteed to match birth outcome.
Lunar age vs. regular age
Understanding the difference matters:
- Regular age: the age used in most countries, based on your birthday each year.
- Lunar age: based on the lunar calendar system; newborns are often counted as age 1 at birth in traditional reckoning.
- Your lunar age may be one or two years higher than your regular age.
Frequently asked questions
Can I use conception date from the regular calendar?
You can estimate, but results are better if you first convert to a lunar month.
What if my result changes with another website?
That is common. Different sites use different historical chart versions or formulas.
Does this work for IVF pregnancies?
You can still try it for fun using the embryo transfer/conception timing, but it remains a non-medical prediction.
Final thoughts
The calculator chinese gender method remains popular because it is simple, fast, and rooted in tradition. Enjoy it as a lighthearted tool during pregnancy—but rely on licensed healthcare providers for any medical guidance or confirmed fetal sex information.