How Accurate Is the Chinese Gender Calendar?
Is There Scientific Evidence?
There is no scientific proof that the Chinese Gender Calendar can predict a baby's sex. When tested, its results line up with random chance rather than medical accuracy.
That means the prediction is roughly a 50/50 outcome, similar to a coin flip. It can be fun to try, but it should not guide decisions.
| Outcome | Estimated Probability |
|---|---|
| Boy prediction is correct | ~50% |
| Girl prediction is correct | ~50% |
Why Many People Feel It \"Works\"
Confirmation bias makes accurate hits feel memorable, while misses are easy to forget.
Shared anecdotes and social media posts can reinforce the perception that the chart is reliable, even when the math says otherwise.
Cultural tradition adds meaning beyond accuracy, which is part of why the chart remains popular.
Chinese Gender Calendar vs Medical Methods
| Method | Typical Accuracy | Timing | Purpose |
|---|---|---|---|
| Chinese calendar | ~50% | Pre-pregnancy or early | Entertainment |
| Ultrasound | 90%+ | Mid-pregnancy | Medical screening |
| NIPT | 99%+ | Early pregnancy | Medical screening |
How to Use It Responsibly
Treat the chart as entertainment and cultural tradition, not a factual test. If you want to try it, use the chinese gender chart calculator and enjoy the experience with family.
For the method behind the chart, see the chinese gender calendar guide. For practical questions and medical context, visit the FAQ.