Chinese Gender Chart vs. Mayan Gender Predictor: Which Should You Trust?
Two ancient-looking methods dominate the gender-guessing corner of the internet: the Chinese gender chart and the Mayan gender predictor. They look similar — calendars, ages, mysterious origins — but they work on completely different logic.
The Chinese method: lunar chart lookup
- Inputs: mother’s birth date + conception date
- Logic: convert both to the Chinese lunisolar calendar; look up a fixed 28×12 grid cell
- Claimed history: Qing dynasty palace chart, ~700 years old
- Accuracy when tested: ~50% — coin flip
The Mayan method: odd/even parity
- Inputs: mother’s age at conception + the conception year
- Logic: odd + odd or even + even → girl; mixed → boy
- Claimed history: Mayan civilization, but no confirmed manuscript survives
- Accuracy when tested: 50% by construction — parity is weirdly deterministic folklore
The fun twist
The two methods disagree surprisingly often — which is how we ended up with sites letting you compare both side-by-side. Try both on our site:
If they disagree, who wins?
Medicine does. NIPT (~10 weeks) and the anatomy scan (18–20 weeks) are the only reliable confirmations. If both folklore methods agreed… also medicine. If they disagreed and you polled the ring test and the baking-soda test too — see the pattern? Any of these lands at or near 50%.
Verdict
Use both, get contradictory answers, laugh, and enjoy the fact that your grandmother now has something to debate until the 20-week scan. That’s exactly what these traditions are for. 💙💗