The Chinese Gender Predictor uses the traditional Chinese Gender Chart to guess whether a baby will be a boy or a girl. Enter the mother's age and the month the baby was conceived, and the tool reads the chart that crosses lunar age with conception month. It is a centuries-old folk pastime with no medical basis, offered purely for fun.
What the Chinese Gender Chart Is
The chart is a grid said to have been used in old China that pairs a mother's age at conception with the month she conceived and returns a boy or girl for each combination. Because the original is built around the Chinese lunar calendar, the tool adjusts an ordinary age toward the lunar reckoning, which usually runs about a year ahead of the Western count, before reading the result.
How to Use It
Provide the mother's age, or her date of birth, along with the month of conception, or a conception date. The calculator works out the lunar age, looks up the matching cell on the chart and shows its boy or girl prediction. You can try different months to see how the chart's answer changes across a year, which is part of the fun of it.
Taking It in the Right Spirit
There is no science behind the chart, and the only reliable ways to learn a baby's sex are medical. Read the prediction as a piece of cultural fun, a light tradition to share with family rather than anything to plan around. Half the time the chart will be right simply by chance, which is part of why it has stayed popular for so long.
The Legend Behind the Chart
Tradition holds that the original chart was discovered in a royal tomb near Beijing and is several centuries old, kept for a time as a palace secret. That story is folklore rather than documented history, and no version of the chart has any medical backing. What has survived is the grid itself, a neat pairing of a mother's age with a conception month, which is why it endures as a parlour pastime passed from one generation to the next.
Working Out the Lunar Age
The chart reads lunar age, not the Western count, and the gap matters. Say a mother is 28 in the Western sense when she conceives in March. Chinese reckoning usually adds about a year, treating a newborn as one and adding a year at the new year, so her lunar age sits near 29 or 30. The tool makes that adjustment for you from the age or birth date you give, then reads the cell where that lunar age meets the conception month.
Common Mistakes With the Chart
Most disagreements between two versions of this chart come from the inputs, not the grid. Using a plain Western age instead of the lunar one, or counting from the Gregorian month rather than the lunar month of conception, lands you on a neighbouring cell and a different answer. The calculator handles the lunar conversion so you don't have to, but it's worth remembering that the chart is a coin-flip dressed in tradition, accurate only by chance.
Questions Parents Ask
How does the Chinese Gender Chart work?
It cross-references the mother's lunar age at conception with the lunar month the baby was conceived and returns a boy or girl for that combination, based on a traditional Chinese grid.
Is the prediction accurate?
No. The chart has no medical or scientific basis and is for entertainment only. The only reliable ways to determine a baby's sex are medical, such as an ultrasound or genetic test.
Why does it ask for a lunar age?
The original chart is built on the Chinese lunar calendar, where age is usually counted about a year higher than the Western system. The tool adjusts for this before reading the chart.
This tool is for entertainment and reflection only and has no scientific basis.
More to explore
There is plenty more to try in this tradition: Birthstone Calculator, Birth Flower Calculator, Human Design Bodygraph Calculator and Love Tarot Reading. Each divination calculator highlights something the others might not, so it pays to look around a little. Browse them all on the divination calculators page, or see the complete calculator list.