The accuracy of Chinese gender chart is much higher than other free gender prediction tools online but it couldn’t be higher than that of the ultrasound scanning. It's proved that the accuracy for the chart is about 70%. However, there is no scientific basis to the Chinese birth chart. So, you'd better use it carefully and better take the prediction result with a grain of salt.
The accuracy of Chinese gender chart is much higher than other free gender prediction tools online but it couldn’t be higher than that of the ultrasound scanning. It's proved that the accuracy for the chart is about 70%. However, there is no scientific basis to the Chinese birth chart. So, you'd better use it carefully and better take the prediction result with a grain of salt.