Is the Chinese gender chart accurate?

No. The Chinese gender chart is a folk tradition with no scientific basis, and reviews have found it about as accurate as a coin flip (roughly 50%). A baby's sex is close to 50/50 for every pregnancy, so any match is coincidence. Use it purely for fun.

How do I calculate my lunar age for the chart?

Traditional Chinese nominal age counts you as 1 at birth and adds a year at each Lunar New Year, so it is usually your real age plus about one. For a stricter reading, add 1 to your age at conception before using the chart. The tool works fine if you just enter your everyday age as an approximation.

Which month should I choose, the lunar or calendar month?

The original chart uses the lunar month of conception, which can differ from the Western calendar by a few weeks. For simplicity, enter the ordinary calendar month you conceived and read the result as an approximation. If you want to be exact, convert your conception date to the Chinese lunar calendar first.

Where does the Chinese gender chart come from?

It is known as the Chinese Birth Calendar or Qing palace chart. Legend says the original was found in a royal Qing-dynasty tomb near Beijing and used to predict imperial heirs, though historians cannot confirm this and no original survives. Today's versions are widely shared reproductions passed down as folklore.

How is a baby's sex actually determined?

Biologically, sex is decided at conception by the father's sperm: a Y-chromosome sperm produces a boy and an X-chromosome sperm produces a girl. The chance is close to 50/50 for every pregnancy. A reliable answer comes from an ultrasound (around 18 to 20 weeks) or non-invasive prenatal testing, not from any chart.

Chinese Gender Predictor Example With Real Inputs

The Chinese gender predictor reads a 28-by-12 traditional chart that crosses a mother's lunar age at conception (18 to 45) with the lunar month of conception (1 to 12) and shows boy or girl in the matching cell. A Chinese gender predictor example walks through two simple inputs — the mother's age at the time she conceived and the calendar month conception happened — and lets the tool instantly read the chart's grid for you, no manual lookup required. The chart itself is often called the Chinese Birth Calendar or the Qing palace chart and is treated as a folk-tradition game rather than a medical test, which means every result should be read as entertainment only. This guide shows a worked example with real numbers, explains how to map your own age and date to the lunar system the chart assumes, and clears up what the verdict can and cannot tell you. By the end, you should know exactly which inputs to type, why the chart disagrees with biology, and where the prediction belongs in a gender-reveal moment, a baby shower game, or a curious chat with friends.

What the Traditional Chinese Gender Chart Looks Like

The version circulating today is a 28-row by 12-column grid. One axis lists the mother's lunar age at conception, starting at 18 and ending at 45, in single-year steps. The other axis lists the lunar month of conception, numbered 1 through 12. Where the mother's row crosses the conception-month column, the cell is marked either Boy or Girl, and that single character is the entire prediction.

Two details make this chart different from a plain age lookup. First, it uses Chinese lunar or nominal age, in which a baby is counted as 1 at birth and gains a year at each Lunar New Year. Nominal age therefore runs roughly one year ahead of your Western age at any given moment. Second, the chart uses the lunar month of conception, which drifts a few weeks from the Western calendar because lunar months are tied to the moon's phases rather than to fixed dates.

According to a popular legend, the original was kept on a scroll in a royal Qing-dynasty tomb near Beijing and used to guess the sex of imperial heirs. Historians cannot verify that story, and no dynasty-era original survives. What you find online today is a widely shared reproduction that has been passed around as folklore for generations. That is why a Chinese gender predictor example treats the inputs as approximations: the tool accepts your everyday age and the calendar month, then reads the chart at the closest matching cell. Different reproductions disagree cell by cell, which is part of why the chart is labeled entertainment rather than science.

Chinese Gender Predictor Example With a 28-Year-Old Mom Who Conceived in June

To see what a prediction actually looks like, pick a concrete scenario. Say a mother was 28 years old at the time she conceived and conception happened during June. Open the Chinese Gender Predictor, type 28 into the age field, pick June from the month list, and the tool reads the matching cell on the traditional grid for you.

The cell value — Boy or Girl — depends on which reproduction of the chart the tool is reading. The Qing palace chart has been copied many times over the decades, and the copies do not always agree at the cell level, so most versions come with a clear "for entertainment only" disclaimer right at the top. Treat the tool's reading as a fun folk-tradition guess rather than a definitive answer, and the result will land where you expect: somewhere between playful suspense and a coin flip.

If you want to be stricter about the inputs and match the chart's assumptions exactly, do the conversions the traditional grid assumes:

Lunar age conversion. Add about one year to your real age to mirror Chinese nominal age. A 28-year-old in real age corresponds to a lunar age of roughly 29.
Lunar month conversion. Convert your June conception date to the Chinese lunar calendar. Depending on the year, a June date can fall in the 4th or 5th lunar month rather than the Western sixth month, because lunar months follow the moon.
Read the grid. Find the row for your lunar age and the column for your lunar month, then read Boy or Girl in that cell. The verdict is whatever character sits at that intersection.

Most people skip these conversions and just enter their real age and the calendar month. That is fine for a folk-tradition game, and the tool's instant reading is exactly what makes the chart easy to use at a baby shower or gender-reveal party.

How to Use the Chinese Gender Predictor

Enter the mother's age at the time of conception (18 to 45). Use her real age as a simple approximation, or add about one year if you want to mirror Chinese lunar age more closely.
Choose the month conception happened. Pick the ordinary calendar month — January through December — as an approximation of the lunar month the chart is built around.
Read the instant prediction. The tool reads the cell where your age row meets your conception-month column and shows Boy or Girl. There is no science behind the result, so treat it as entertainment only.

That is the entire workflow. Two inputs, one instant reading, and a screenshot to share if the moment calls for it. The tool runs entirely in your browser, so nothing about the inputs is stored or sent to a server.

Why the Chart Predicts Nothing Real

Biologically, a baby's sex is set at the moment of conception by the father's sperm. A sperm carrying a Y chromosome produces a boy; a sperm carrying an X chromosome produces a girl. The probability is close to 50/50 for every pregnancy, with a small worldwide skew toward more boys being born. Nothing about the mother's age or the month of conception shifts those odds, because the chromosomes are decided before any chart can be consulted.

Controlled reviews have compared the Chinese chart's predictions to actual birth outcomes and found the chart no more accurate than a coin flip. That is not a flaw in any one reproduction — it is the inevitable result of asking a folk grid to predict something that biology decides. The chart cannot see, measure, or influence a real pregnancy, and it makes no difference whether you enter your real age, your lunar age, the calendar month, or the lunar month.

If you want an actual answer about your baby's sex, the only reliable routes are medical. An ultrasound, usually performed around 18 to 20 weeks of pregnancy, can usually identify sex visually. Non-invasive prenatal testing reads fetal DNA from a maternal blood sample and is even more accurate. Until you have one of those, the chart has roughly the same chance of being right as a guess.

What the chart uses	What you enter in the tool	Why it differs
Mother's lunar age (18 to 45)	Mother's real age at conception	Lunar age runs about one year ahead of real age
Lunar month of conception (1 to 12)	Calendar month of conception (1 to 12)	Lunar months follow moon phases and shift year to year
Single 28-by-12 grid, Boy or Girl	Same grid, read instantly	Different copies of the chart can disagree cell by cell
Exact reproduction of a Qing-dynasty scroll	Folk-tradition reproduction	No original scroll survives, so the canon is not fixed

Try It With Your Own Numbers

The quickest way to run your own Chinese gender predictor example is to open the Chinese Gender Predictor, type in the mother's age at conception, pick the month, and read the result. Compare the tool's reading against your own conversion of the chart using lunar age and lunar month, screenshot the prediction for a gender-reveal moment, and see how it lines up with other old wives' tales such as the ring-on-a-string swing or the fetal heart-rate guess.

For a fuller picture of the chart's history and the cultural stories around it, the playful folklore guide to the Chinese Gender Predictor adds more context on where the Qing palace legend comes from and how modern reproductions differ. Whatever the tool says, remember it is a centuries-old guessing game. The chart's charm is the ritual — the suspense, the laughter, the shared anticipation — not the verdict. Save the verdict for the ultrasound.