Just for fun
Chinese Gender Predictor Chart
A lighthearted prediction from the traditional Chinese Gender Chart, allegedly discovered in a Beijing royal tomb 700 years ago. The chart crosses the mother’s lunar age at conception with the lunar month of conception to predict boy or girl.
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History of the chart
According to tradition, the Chinese Gender Chart was discovered in a royal tomb near Beijing around 700 years ago. It cross-references the mother’s lunar age at the time of conception with the lunar month in which conception occurred to predict whether the baby will be a boy or a girl.
How accurate is it?
Independent peer-reviewed studies consistently find the chart’s accuracy to be around 50% — essentially a coin flip. It remains popular because it is fast, free, and shareable, not because it is scientifically reliable.
When you can find out the real gender
- Non-invasive prenatal testing (NIPT): from 9–10 weeks — highly accurate.
- Anatomy ultrasound: 18–22 weeks — visual confirmation.
- CVS (11–13 weeks) or amniocentesis (15–18 weeks): definitive but invasive and not done for gender alone.
Using this tool
We convert your solar dates to approximate lunar age and lunar conception month, then look up the traditional chart. Results are shareable — and genuinely just for fun. Gender disappointment (whichever it turns out to be) is real; consult our related guide on celebrating regardless of outcome.
Frequently asked questions
Why the traditional chart goes to age 45 only?
The original tomb-era chart covered the typical child-bearing age range. Mothers outside 18–45 fall outside the chart’s original data.
What if I don’t know the exact conception date?
Use your best estimate — typically 2 weeks after the first day of your last period, or the day of the fertility window you hit.
Does the tool use my real lunar age?
It uses an approximate conversion. True lunar-age tables exist but differ by source; this tool uses a common public-domain approximation.
Can I trust the result?
No — take it as entertainment. Real gender is confirmed by ultrasound or NIPT.
Is there an Islamic ruling on gender prediction?
See our blog post on the Islamic perspective of gender reveals for scholarly discussion.
Related tools
Related reads
Calculations based on standard obstetric formulas and WHO guidance. For medical decisions, always consult your doctor or midwife.