Free Bazi Calculator
Ancient wisdom, Modern insight.
Enter your birth details to see your Four Pillars, Day Master, and the rules behind them.
No sign-up required · Auditable · Privacy-first
See what your result will show
A completed chart starts with the Four Pillars, identifies the Day Master that anchors the reading, and then places element balance and Life Chapters around it. This is the shape of the result before any optional AI explanation.
- Four Pillars
- Year · Month · Day · Hour, with the recorded time clearly marked.
- Day Master
- The Day Stem that gives the rest of the chart its reference point.
- Timing and balance
- Element distribution and Life Chapters explained in context.
What this free chart helps you understand
Your reference point
Find the Day Master and see how the Four Pillars relate to it. Learn the Day Master basics.
Element relationships
Read the Five Elements as a distribution of the chart, then follow their relationships. Browse the glossary.
Life Chapters
See the roughly ten-year timing sequence around your natal chart. Read how timing works.
Calculation comes before AI
Your chart is calculated, not guessed.
Rules engineDetermines your chart
Server recalculationChecks it from your inputs
Master's interpretationInterprets the chart only
Your birth details are processed by our server to calculate the free chart; no account or saved AI-reading record is created. A copy of your last-used inputs may be kept in this browser so you can clear them anytime. AI is used only when you explicitly request a free summary or deeper reading. See our method and privacy details. The rules behind the calculation are published, and their boundary cases are recalculated on every build — see the calculation benchmarks.
Rooted in the Classical Canon
A thousand years of classical method. Computed, not recited.
BaziCalculator.ai runs on the orthodox Zi Ping (Four Pillars) tradition — the classical canon behind a thousand years of Chinese destiny reading — computed with modern precision and explained in plain language.
渊海子平
Yuanhai Ziping · Song–Yuan era
The founding codex of the Zi Ping method. Our Ten Gods framework and structure-first reading descend from this tradition.
子平真诠
Ziping Zhenquan · Qing dynasty
The definitive manual on chart structure (Ge Ju): how a destiny is organized, not merely what it contains.
滴天髓
Ditian Sui · Ming dynasty
The philosophy of flow and balance — how the five energies rise, clash, and transform across a lifetime.
穷通宝鉴
Qiongtong Baojian · Ming–Qing era
The seasonal handbook: what every birth month demands of a chart, and how climate shapes destiny.
三命通会
Sanming Tonghui · Ming dynasty
The great encyclopedia of the tradition — star lore, rare combinations, and the cross-checks that keep a reading honest.
Five classics, four analytical layers: structure, flow, climate, stars.
Every chart here passes through all four — computed deterministically, with true solar time and exact solar-term boundaries. Explained, not prophesied.
Frequently Asked Questions
Today in Bazi (今日干支)
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Method, sources and editorial responsibility
Maintained by BaziCalculator.ai Editorial Team · Content reviewed
Our maintainers are responsible for the calculation code and educational copy. This team byline does not claim individual professional credentials. Calendar calculations use tyme4ts; our method guide explains the true solar time correction, conventions and limits. Classical texts above identify the method's lineage; they are not quotations or evidence of scientific prediction.