bumpcalc.comChinese Gender Predictor
The Chinese gender chart is an old lunar calendar tradition that matches maternal lunar age and conception month to predict boy or girl. Use this calculator for a playful prediction reveal.
Frequently Asked Questions
How accurate is the Chinese gender predictor?
The Chinese gender chart is a traditional folk method with no scientific basis. Studies show it has roughly a 50/50 accuracy rate — the same as random chance. This calculator is for entertainment purposes only and should not be used to make medical decisions.
How does the Chinese gender calendar work?
The chart uses two factors: the mother's lunar age at conception and the lunar month of conception. These are mapped to a grid that predicts 'boy' or 'girl.' The chart is said to be based on an ancient Chinese document, though its exact origins are debated by historians.
What is lunar age?
In Chinese tradition, your lunar age is typically 1-2 years older than your Western age. You are considered 1 year old at birth, and a year is added at each Chinese New Year (which falls between January 21 and February 20). This calculator converts your birthday to lunar age automatically.