BaZi calculator — your four pillars, drawn precisely

Enter a birth date, time and place, and this calculator draws your four pillars of destiny — the year, month, day and hour pillars of traditional Chinese astrology — together with your day master, a five elements balance, and the ten-year luck pillars that follow it.

Precision is the whole point: months change at solar terms (not calendar months), years change at lichun; historical time zones and daylight saving — including China’s 1986–1991 DST — are applied from the IANA database; and hours can be corrected to true solar time for your birthplace’s longitude. If you don’t know your birth time, a three-pillar chart is drawn and clearly marked.

The free chart is free — no account needed. It reads as a mirror: tendencies and seasons, not fate.