The eight characters beneath your zodiac animal: your birth year, month, day, and hour, each as one heavenly stem and one earthly branch — computed for your exact birth moment and timezone.
Free full chart with a written snapshot interpretation — no payment needed.Five systems. Your composition in 60 seconds.
Each pillar pairs a stem (element + polarity) with a branch (the animals you know). Together they are the eight characters — 八字 BaZi.
Roots, family inheritance, the public-facing surface. This is the only pillar the popular zodiac reads — and even here it usually drops the stem.
Formative environment and the chart's working engine. Set by the jié solar terms, not calendar months.
The self and close partnership. Its stem is your Day Master — the element the whole chart is read against.
Later chapters, output, what you leave running. The only pillar that needs your birth time.
The Day Master is the anchor: every other stem and branch is read through its relationship to this one element.
The BaZi year begins at Li Chun (around February 4), not Lunar New Year — so a late-January birth can carry a different BaZi year animal than the one on the placemat. Months follow the twelve jié solar terms, which this calculator computes astronomically for your exact birth instant and timezone instead of reading from a lookup table.
Days flip at civil midnight and the hour pillar uses your local clock time — the conventions are stated because schools differ, and a chart you can trust starts with knowing exactly how it was drawn.
It converts your birth year, month, day, and hour into the Four Pillars of Destiny — four stem-branch pairs, eight characters. This one computes all four pillars plus your Day Master and five-element balance.
The pillar math is deterministic and verified against independent Chinese-calendar references. Month boundaries are computed astronomically for your exact birth instant and timezone, so births within hours of a jié boundary resolve correctly.
The BaZi year pillar follows Li Chun (around February 4), the traditional Four Pillars convention; the popular zodiac follows Lunar New Year. Born between the two? Your result explains the difference.
Year, month, and day pillars need only your birth date. The hour pillar needs a time — without one, the calculator works honestly with three pillars rather than inventing an hour.
Yes — all four pillars, Day Master, and element balance, inside a complete five-system chart, with no payment needed. The optional in-depth written reading is $28 one-time.
The heavenly stem of your day pillar — the element that stands for you. Everything else in the chart is read through its relationship to this one element and polarity.