Chinese Gender Predictor
A 700-year-old chart that guesses your baby's gender from the mother's lunar age and conception month. It's a fun tradition — not a medical prediction.
Your details
Used to calculate your lunar age at conception.
The estimated date the baby was conceived.
Not sure? Use the conception calculator.
Looking ahead? Compare hospitals or explore care plans.
What is the chart?
A grid said to be discovered in a 700-year-old royal tomb during the Qing dynasty. Each cell maps a mother's lunar age and conception month to a predicted gender.
Is it accurate?
No. There's no scientific evidence the chart predicts gender better than chance. Treat it as a fun tradition — only an ultrasound or genetic test can give a real answer.
Plan your delivery
Whatever the chart says, Pregzify connects you with trusted maternity hospitals and care plans for every step of your journey.
Browse hospitalsFrequently asked questions
Everything you need to know about this calculator.
It's a traditional chart said to be over 700 years old, allegedly discovered in a royal tomb during the Qing dynasty. It uses the mother's lunar age at conception and the lunar month of conception to predict whether the baby will be a boy or a girl.
No. Scientific studies have found it performs no better than a coin flip — roughly 50% accuracy. It has no medical or scientific basis. Gender is determined by chromosomes (XX or XY) at the moment of fertilization, not by the mother's age or month of conception.
Lunar age (also called Chinese age or xu sui) is the traditional Chinese way of counting age. You are considered 1 year old at birth, and a year is added every Lunar New Year rather than on your birthday. This calculator approximates it as your Western age plus 1.
You can use our Conception Calculator to estimate it from your due date or last menstrual period. Even a rough estimate will work for this chart, since it only uses the month — not the exact day.
Some people use the chart to pick a conception month for a preferred gender, but there is no evidence this works. Baby gender is determined by biology, not timing. Treat it as a fun tradition, not a planning tool.
The original chart was designed for women of typical childbearing age in ancient China. Lunar ages outside 18–45 are not included in the traditional chart, so no prediction can be made for those ages.
An ultrasound (typically at 18–20 weeks) or a non-invasive prenatal test (NIPT, available from 10 weeks) can determine gender with very high accuracy based on real biological data. The Chinese chart is a cultural tradition with no medical validity.
Absolutely not. This is purely for entertainment. Do not use it for any medical, personal, or family planning decisions. For accurate gender information, consult your healthcare provider.