Chinese Gender Chart生 · 男 · 女
Back to predictor

Tradition · 中国生男生女表

How accurate is the Chinese gender predictor?

A clear, evidence-based guide to what the chart can and can't do — and why the real odds are about the same as a coin toss.

The short answer: roughly 50/50

The Chinese gender predictor is a folk tradition, not a medical test. For any single pregnancy, the chance of having a boy or a girl is close to 50%. The chart's result may be fun to read, but it is no more reliable than flipping a coin. That is the same conclusion shared by parenting resources such as The Bump and BabyCenter: the chart is entertainment, not science.

What the research says

Peer-reviewed studies have compared the Chinese gender chart's predictions against real birth records. The results consistently land near 50% accuracy — exactly what random chance would predict. No large, controlled study has found a pattern between the mother's age at conception, the month of conception, and the baby's sex. Medical organisations do not endorse the chart because there is no biological mechanism that would make it work.

Why it sometimes feels right

Human memory is good at remembering hits and forgetting misses. When the chart predicts a girl and the baby is a girl, that result stands out. When it predicts wrong, it is easy to dismiss or forget. This is called confirmation bias. Because the chart gives only two possible answers, about half of all guesses will be correct by pure chance, which can make it feel surprisingly accurate in a group of friends.

Ultrasound vs. the chart

A mid-pregnancy ultrasound performed by a trained professional is the most common way to learn a baby's sex, with accuracy often above 95% depending on timing and position. Non-invasive prenatal testing (NIPT) can also reveal sex from fetal DNA with very high accuracy. The Chinese gender chart does not use biology, imaging, or DNA — it uses a fixed table, so it cannot compete with these methods.

How to use the result responsibly

Enjoy the prediction as a conversation starter, a baby-shower game, or a keepsake. Do not use it to make medical, health, or family-planning decisions, and never use it as a reason for sex-selective choices. If you need reliable information about your baby's sex, talk to your healthcare provider about an ultrasound or approved prenatal test.

Frequently asked questions

Straight answers to the most common questions about the predictor's accuracy.

How accurate is the Chinese gender predictor?

Studies show accuracy around 50%, which is the same as random chance. It is not a reliable way to predict a baby's sex.

Have scientific studies tested the chart?

Yes. Researchers have compared chart predictions to actual births in peer-reviewed studies and found no meaningful advantage over guessing. The outcomes cluster around 50/50.

Why is the chart wrong so often?

The chart has no biological basis. A baby's sex is determined by which sperm fertilises the egg, not by the mother's age or the month of conception. With only two outcomes, any method will be right about half the time by luck alone.

Is an ultrasound more accurate than the chart?

Yes. A mid-pregnancy ultrasound can identify sex with accuracy often above 95%, depending on timing and the baby's position. NIPT from a blood sample is also highly accurate.

When can I find out my baby's sex for sure?

Many people learn through an anatomy ultrasound at about 18–22 weeks. NIPT can sometimes indicate sex earlier, around 10 weeks, through a blood test. Always confirm through a qualified healthcare provider.