Chinese Gender Predictor Chart
The Chinese gender predictor chart — also called the Chinese lunar calendar pregnancy chart or the Qing Dynasty Palace Birth Calendar Chart — claims to forecast whether you will have a boy or a girl from two numbers: the mother's lunar age at conception and the lunar month of conception. Enter your dates below and we will do the lunar conversion for you.
Quick Answer
The chart reads a grid of mother's lunar age (18–45) against the lunar month of conception (1–12) to output boy or girl. It is genuinely about 700 years old, culturally fascinating, and roughly 50% accurate — no better than a coin flip. Treat it as entertainment; the only reliable ways to learn your baby's sex are a NIPT blood test (from ~10 weeks) or the 18–20 week anatomy scan.
Chinese Gender Predictor Calculator
Enter the mother's date of birth plus either the conception date or the due date. The tool converts both to the traditional Chinese lunar age and lunar month and highlights the answer on the chart below.
For entertainment only — about 50% accurate. The only reliable sex determination is a medical test.
Full Chinese Gender Chart (Ages 18–45 × Months 1–12)
Rows are the mother's lunar age, columns are the lunar month of conception (1–12). Blue = boy, pink = girl. After you use the calculator above, your cell is outlined. You can print this page to keep the grid.
BoyGirlLunar age 18–45 · Lunar months 1–12
How the Chart Works
The grid was recovered from a manuscript said to have come from a Qing Dynasty royal tomb near Beijing and is now held in a museum collection. Unlike Western astrology it depends on only two inputs, so it is quick to read — but both inputs are lunar, not the Gregorian numbers most of us know, and that conversion is where people get it wrong.
The two inputs
- Lunar age at conception. In Chinese reckoning a baby is "one" at birth (the months in the womb count), and everyone adds a year on Chinese New Year, not on their birthday. Lunar age is therefore usually your Western age plus one, and plus two when your birthday has not yet arrived relative to the lunar new year.
- Lunar month of conception. The chart uses months of the lunisolar calendar, whose start drifts against the Gregorian calendar by a few weeks each year, so you cannot simply use the month you conceived in — it has to be converted.
How to Read the Chinese Gender Chart — Worked Examples
Chinese New Year Boundary Dates
Because lunar age turns over at Chinese New Year, these dates decide whether your lunar age is +1 or +2:
| Gregorian year | Chinese New Year begins | Zodiac animal |
|---|---|---|
| 2024 | February 10, 2024 | Wood Dragon |
| 2025 | January 29, 2025 | Wood Snake |
| 2026 | February 17, 2026 | Fire Horse |
| 2027 | February 6, 2027 | Fire Goat |
| 2028 | January 26, 2028 | Earth Monkey |
How Accurate Is the Chinese Gender Chart?
The honest answer: about 50%. Several independent analyses have compared chart predictions against actual births and found agreement no better than chance. The "up to 90% accurate" figures you see online are not backed by any peer-reviewed study. That makes sense once you look at how it works — nothing about a mother's birth year or the month of conception can biologically set the sex of a baby, which is decided the instant a sperm carrying an X or a Y chromosome fertilises the egg.
| Method | Best accuracy | Earliest | Evidence |
|---|---|---|---|
| Chinese gender chart | ~50% | Anytime | Chance (entertainment) |
| NIPT blood test | >99% | ~10 weeks | Medical, validated |
| Anatomy ultrasound | 95–99% | 18–20 weeks | Medical, validated |
| Nub theory | 70–90%* | 11–14 weeks | Limited, operator-dependent |
| Ramzi theory | ~50% | 6–8 weeks | Not peer-reviewed |
*Reported ranges for nub theory vary widely with gestation and imaging quality. See our full accuracy breakdown.
Can You Use the Chart Before Conceiving?
Some people use it in reverse: scan the grid for the months that predict their desired sex and plan conception then. There is no evidence that timing intercourse to a "boy" or "girl" lunar month changes the outcome, so treat this purely as a fun planning exercise. If family balancing matters to you, the real (and regulated) options are medical, not calendar-based.
Limits of the Chinese Gender Predictor
- Singletons only. It gives one answer and cannot predict twins or higher-order multiples.
- Age range 18–45. The traditional grid stops at 45, so it cannot be read outside those rows.
- Conversion-sensitive. A wrong lunar month or an ignored Chinese New Year boundary changes the result — which is why an automatic calculator is more dependable than hand lookup.
- No scientific basis. Enjoy it; do not name the nursery yet.
Explore Other Prediction Methods
The Chinese chart is one of nine methods we score and explain. Compare it side by side with the others:
After You Know (Or Guess) — Next Steps
Turn your prediction into plans: when you can actually find out, week by week, 25+ gender reveal party ideas, and browse the boy or girl symptom quiz for a second opinion.
Frequently Asked Questions
How accurate is the Chinese gender predictor chart?
About 50 percent — the same as a coin flip. The 70–90 percent claims online have no peer-reviewed support. It is a fun tradition, not a medical test.
How is Chinese lunar age calculated?
A baby counts as one at birth and everyone ages a year at Chinese New Year rather than on their birthday, so lunar age is usually Western age +1, and +2 when your birthday has not yet passed relative to the lunar new year.
Does the Chinese gender chart change every year?
No — the grid is fixed. Only the conversion of your dates into lunar age and month shifts each year because the lunisolar calendar drifts against the Gregorian calendar. A 2026 and 2027 predictor use the same chart.
Can the chart predict twins?
No. It was designed for single pregnancies and outputs a single answer. There is no valid way to use it for multiples.
What is the difference between the Chinese calendar and the lunar calendar?
The chart uses the traditional Chinese lunisolar calendar (nongli, the "agricultural calendar"). Months follow the moon with an occasional intercalary month added to stay aligned with the sun.
Is it worth using if it is only 50% accurate?
As a piece of culture and a bit of pregnancy-day fun, yes. Just keep the expectation at coin-flip level and save the real decisions for your NIPT or anatomy scan.
Wikipedia describes the Chinese calendar as "a lunisolar calendar created by or commonly used by the Chinese people." Chinese calendar, Wikipedia
On the medically reliable alternative, Wikipedia notes NIPT "analyzes small DNA fragments that circulate in the blood of a pregnant woman." Noninvasive prenatal testing, Wikipedia
Editorial review by the Gender Predictor team · Last updated September 11, 2026 · Not medical advice.
Want All Nine Methods at Once?
The main tool combines the Chinese chart, old wives' tales, Ramzi, nub, heart rate, baking soda, skull, ring test and gut feeling into a single weighted result — free, no signup, runs entirely in your browser.
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