免費排盤BaZi Chart Calculator
Enter your birth date and time, and this tool computes your Four Pillars - the eight characters of Chinese astrology - using the standard classical calendar (lunar-javascript, MIT). Transparent, free, and grounded in the same calculations this library documents.
四柱八字Your Four Pillars
For guidance and self-awareness purposes only. This calculator computes a cultural framework - it does not predict your future, diagnose anything, or replace professional advice. Calculated locally in your browser; no data is sent anywhere.
About accuracy: the chart is computed from the standard solar-to-lunar calendar (the same classical method documented in our Zhou Yi and Learn pages). When you enter your birth longitude, the tool applies true solar time - the longitude correction (4 min per degree east of the 120°E reference) plus the equation of time (Meeus / NOAA solar algorithm, accurate to about a minute) - which is the classical refinement. Where true solar time shifts the hour pillar, the chart shown uses it and notes the change. The seasonal starting point of the year (lìchūn) is applied by the underlying calendar library.