Chinese Lunar Calendar

The Chinese Lunar Calendar tool converts a standard Gregorian date into its equivalent in the traditional Chinese calendar, a lunisolar system that tracks both the phases of the Moon and the solar year. Unlike the purely solar Western calendar, the Chinese calendar begins each month at a new Moon and periodically inserts a leap month to keep the lunar year aligned with the seasons.

Each converted date carries rich detail: the lunar year named by its Heavenly Stem and Earthly Branch (and the associated zodiac animal), the lunar month and day, and often the relevant solar term. The tool handles the arithmetic of new-Moon timing and intercalary leap months so you do not have to consult printed almanacs, returning the correct lunar date for any year in its supported range.

People use lunar-date conversion to find the true date of festivals like Chinese New Year and the Mid-Autumn Festival, to determine traditional birthdays celebrated on the lunar date, and to support practices in Chinese astrology. It complements the BaZi Calculator and Feng Shui Kua Number, both of which rely on traditional Chinese timekeeping.

When converting, remember that the Chinese New Year falls on a different Gregorian date each year, generally between late January and mid-February, and that a person born just before it belongs to the previous lunar year and its zodiac animal. If a leap month is involved, the tool will indicate it so you can distinguish, for example, an ordinary fourth month from a leap fourth month.