The legend says that the Chinese birth gender chart was found in a royal tomb by a Chinese scientist. Ancient Chinese birth chart calculator is the oldest method of baby gender prediction. It claims to be over 90% accurate, however it should be used mainly for entertainment purposes. This chart is based on lunar calendar which shows dates according to the phases of the moon. Chinese lunar calendar baby gender predictor uses mother’s lunar age at the time of conception and the lunar month of conception. Even Chinese gender predictor chart is one of the easiest gender prediction methods and is well known, it is not so much accurate as it pretend and should be used for entertainment purposes only.