BaZi Calculator
Four Pillars of Destiny from your birth date, time and city, with true solar time and astronomical solar terms.
About the BaZi calculator
BaZi, also called the Four Pillars of Destiny, converts your birth moment into four pairs of Heavenly Stems and Earthly Branches. The year changes at Li Chun in early February, the month follows the twelve solar terms, and the day and hour use the true solar time of your birthplace.
This calculator computes solar terms astronomically for any year from 1900 to 2100, applies the equation of time and your longitude, and returns the hidden stems, Ten Gods, Na Yin and luck pillars that a practitioner would read.
Frequently asked questions
Tick the unknown time box. You will still get the year, month and day pillars; only the hour pillar is left out.
The day changes at midnight true solar time, the most common modern convention.
Ten-year periods that colour the chart over time. The starting age is derived from the days between birth and the nearest solar term.
BaZi uses the solar-term calendar, not the lunar month calendar. You enter a normal Gregorian date.