Free BaZi Chart · Plain AI Insights
Know your pattern.Find your direction.
Yuanzi Zhiyi offers a free Four Pillars chart with true solar time, a 23:00 or midnight day boundary, and historical time zones. Full reports and the personal advisor have separate paid plans.
Free basic chartClear settingsAI assistance
As stars turn,illuminating the heart
START WITH A QUESTION
What would you like to understand?
Chart Your BaZi
- Free Chart, No Sign-Up
- View your Four Pillars, Hidden Stems, Ten Gods and luck cycles—no sign-up needed.
- Save Multiple Charts
- Register free to save charts for you and your family, and revisit them anytime.
- In-Depth When You Want It
- Choose paid reports or your personal AI advisor as needed.
ACCURACY & EVIDENCE
How do we check chart calculations?
Chart calculation starts with birth data and explicit time settings, using historical time zones, solar terms, and the chosen day boundary. The same inputs and settings should produce verifiable results. AI explains the chart, and its generated wording still needs checking.
Four Stages of Chart Calibration & Interpretation
Birth Data & Time Standard
Clarify solar or lunar birth date, exact birth time, birthplace, and selected time standard (civil time vs. true solar time). Precise input is the foundation of unambiguous chart calculation.
Timezones & Solar Terms
Historical timezone and daylight-saving records first restore the civil-time meaning of the birth record. Longitude and a published equation-of-time approximation are then used to compare whether true solar time crosses an hour or day boundary; year and month pillars still compare the same birth instant with solar-term transitions.
Deterministic Pillars & Cycles
The Four Pillars, Ten Gods, and luck cycles follow the site's declared rules. Traditional terminology and rule lineages reference Sanming Tonghui, Yuanhai Ziping, and Ditian Sui, while modern calendar and time data are handled separately. The same inputs and options should produce the same reviewable structured result.
Structured AI Interpretation
AI explains the calculated chart without recalculating or changing the Four Pillars. Generated text can still be wrong; check it against the original chart and real-world circumstances.
VERIFICATION TOOLS
Verify Each Step of a Chart
Start with your birth date, recorded local time, and birthplace. Create a free chart, locate the Day Master, then explore the Ten Gods and luck cycles. Use the solar-time tool to check timing, or read the sample report to see how interpretation builds on the chart.
See Your Bazi Chart at a Glance
Enter your birth date, time, and place to view the Four Pillars, Ten Gods, hidden stems, and luck cycles. Start with the full chart, then explore your strengths and life stages.
Create Your Free Chart →TIME CALIBRATIONTrue Solar Time Calibration
Near an hour or day boundary? Enter your birthplace to compare local time, longitude adjustment, and true solar time, so you can see how calibration affects the time used for your chart.
Calibrate Birth Time →STRENGTHS & PATTERNSDiscover Your Strengths Through the Ten Gods
Explore how the Ten Gods appear across your chart to understand your motivations, workplace strengths, use of resources, and relationship patterns.
Explore Ten Gods & Strengths →LIFE STAGESUnderstand Your Luck Cycles and Life Stages
Explore decade-long and year-by-year cycles to understand the themes of different life stages and bring another perspective to your career, relationships, and personal plans.
Explore Luck Cycles →
FREQUENTLY ASKED QUESTIONS
Frequently Asked Questions
Answers about your report, personalized interpretation, chart calculation, and privacy.
Why might the same birthday produce different Bazi charts in different tools?
Differences usually come from birth data, historical timezone handling, true solar time, solar-term transitions, or day-boundary options. In particular, choosing 23:00 as the day boundary instead of midnight can change the day pillar; align inputs and options before comparing results. Learn about true solar time calibration →
When is comparing true solar time particularly necessary?
Not everyone must switch to true solar time. Compare both results when the birth record is reliable and the calibration may cross an hour or day boundary; without a boundary crossing, the displayed time can differ while the Four Pillars usually remain unchanged. Calculate offsets with the True Solar Time tool →
How do solar and lunar calendar inputs relate to chart calculation?
Solar and lunar calendars are two input formats. The system first converts them to the same birth date and time, then determines year and month pillars from Lichun and the relevant solar-term transition. Lunar New Year and January 1 are not universal Bazi year or month boundaries. Review calculation standards →
What are the distinct roles of free chart calculation and AI interpretation?
Free chart calculation derives structured fields such as the Four Pillars, Ten Gods, hidden stems, and luck cycles under the selected options. AI organizes an explanation from those results; it does not recalculate the chart, and generated wording should still be checked against the original chart. Understand how AI Bazi works →
Are my birth data, readings, and conversations kept private?
Yuanzi Zhiyi does not proactively publish a user's birth data, private chart, report, or conversation as public content. Information may be processed in the browser or on the server depending on the feature; share report links only with people you trust. See the Privacy Notice for scope, retention, and service-provider details. Read our Privacy Policy →
What is Yuanzi Zhiyi, and which features are free?
Yuanzi Zhiyi operates at yuanzizhiyi.com and provides Four Pillars charts and AI-assisted interpretation. Basic charts, Ten Gods, and luck-cycle queries are free. Full reports and the personal advisor have separate paid plans; see pricing and each feature page for current scope and prices. Review free and paid services →
Should I subtract an hour before entering a daylight-saving birth time?
Enter the local clock time recorded at birth and select the birthplace. Historical time-zone rules account for daylight saving, including the applicable dates in mainland China in 1986–1991. Do not subtract another hour yourself. Compare alternative charts for uncertain records or boundary times. Check historical time zones and daylight saving →
See your choices more clearly through your chart
Fate is not a fixed script; your chart is a personal map. Create it in 30 seconds and start exploring with clarity.