Bazi Calculator
Bazi — the Four Pillars of Destiny — is the Chinese counterpart to a Western birth chart, except that it reads time rather than sky: your birth year, month, day, and hour each take one heavenly stem and one earthly branch, eight characters in all. This free calculator builds that chart from your solar or lunar birth time and gender, then lays out the ten gods, the stems hidden inside each branch, nayin, and shensha (symbolic stars). Pillars are color-coded by the five elements — wood, fire, earth, metal, water — so you can see at a glance which element dominates and which is absent. Luck pillars, years, and months are linked across three levels: open a ten-year luck period (Da Yun) and the year row reloads with that decade; click a year and its twelve months unfold, so a trend can be traced downward. Luck-onset and preferred-element methods follow the common schools and can be switched. No sign-up, and no birth data is stored.
FAQ#
What is a Bazi chart?#
Bazi, also called the Four Pillars of Destiny, is built from four pillars — year, month, day, and hour — each containing one heavenly stem and one earthly branch, eight characters in total (hence “Bazi”). A chart calculation derives these stems and branches from your birth time, along with ten gods, hidden stems, nayin, shensha (symbolic stars), luck pillars, and annual pillars — the foundation of Chinese destiny analysis.
How do I use this calculator?#
In the form above, choose solar or lunar calendar, gender, and your birth date and time; adjust the luck pillar count and yong-shen (preferred element) method as needed, then click “开始排盘” (Start). Results appear in three tabs — Basic Info, Chart (Ming Pan), and More Info. On the chart tab, click a luck period (Da Yun) to switch the annual pillars, and click a year to switch the monthly pillars, all linked across three levels.
How do Da Yun, Liu Nian, and Liu Yue relate?#
Da Yun (luck pillar) spans ten years and reflects the trend of a life stage. Liu Nian is the stem-branch of each year. Liu Yue is the stem-branch of each of the twelve months in that year. In this tool, selecting a luck period automatically loads its ten years; selecting a year loads its twelve months, so you can drill down level by level.
Is the result accurate?#
The stem-branch calculation follows traditional Chinese calendar and metaphysics rules. Different schools differ on luck onset, hidden-stem allocation, and preferred-element methods; this tool offers common algorithm options. Metaphysics results are for reference and study only and do not constitute advice.
Is the data real-time or a fixed sample?#
Currently it uses demo (mock) data to showcase the full chart UI and three-level linkage. Once connected to a real backend calculation API, it will return the actual chart for your input time. The API contract is documented in tools/README.md.
Learn more about the Five Arts of Chinese metaphysics and explore other divination tools.