True solar time correction
Birth time is corrected to true solar time using your latitude and longitude — the same calendar a practitioner would use. Two charts born minutes apart in different cities can land on different pillars.
Enter your birth date, time, and location to generate your Four Pillars chart, find your Day Master, and see your Five Elements balance.
This BaZi Calculator uses the traditional Chinese lunisolar calendar system — a sophisticated timekeeping method refined over two millennia. Unlike Western astrology based on the solar zodiac, the Four Pillars Calculator maps your birth moment to a precise combination of Heavenly Stems and Earthly Branches derived from the interplay of the solar and lunar cycles. Each of your four pillars (Year, Month, Day, Hour) encodes elemental energies — Wood, Fire, Earth, Metal, and Water — that together form your BaZi birth chart. Our calculator faithfully implements this traditional system with accurate calendar conversion.
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Your Four Pillars chart reveals elemental patterns that influence every area of life. A strong Fire Day Master often thrives in leadership and public-facing careers but may need to watch for burnout. An Earth-dominant chart suggests stability in relationships but benefits from cultivating flexibility. The balance and clash between your elements point to health tendencies — Wood relates to the liver and tendons, Water to the kidneys and bones. For complementary spiritual guidance, discover your personal angel number or explore your tarot reading.
Generate Your Chart Free →The free BaZi Calculator generates your complete Chinese astrology birth chart — all four pillars with Heavenly Stems, Earthly Branches, Day Master element, Ten Gods, and Five Elements balance breakdown. For deeper insight, the 2026 Fortune Book is a $29.99 direct purchase that interprets the interactions between your pillars — element clashes and harmonies, hidden stems, luck pillars for the decade ahead, and 2026 Fire Horse year guidance.
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Birth time accuracy matters in Chinese astrology because the Hour Pillar changes every two hours. Our calculator goes beyond clock time — when you enter your birth location, it applies true solar time correction to determine the actual solar hour at your birthplace. A birth recorded at 1:00 PM clock time in western China may correspond to a different solar hour than the same clock time in eastern China. This correction ensures your Hour Pillar is accurate, which professional Chinese astrology practitioners consider essential for a reliable reading.
Generate Your Chart Free →Once your Four Pillars chart is generated, the most useful thing to do next is read it pillar by pillar. Start with the Day Master — the Heavenly Stem of your Day Pillar — because every other pattern in your chart is read in relation to it. From there, look at the Five Elements balance to see which forces are strong, weak, or missing, and use the Day Pillar and Month Pillar to ground self-knowledge and career patterns. To compare two charts side by side, the BaZi Compatibility Calculator uses the same Four Pillars data to score relationship dynamics.
The 2026 Fortune Book is a one-time purchase that interprets the full pillar interactions, decade luck cycles, and the year ahead.
See the 2026 Fortune BookEnter your birth date, time, and location
Select your birth year, month, day, and time. Add your birth city for true solar time correction. If you do not know your exact birth time, select "Unknown time" for a three-pillar chart.
Generate your Four Pillars (BaZi) chart
The BaZi Calculator converts your birth data to the lunisolar calendar, applies true solar time correction, and builds your four pillars — Year, Month, Day, and Hour — each with its Heavenly Stem and Earthly Branch.
Read your Day Master analysis
Your Day Master element (the Heavenly Stem of your Day Pillar) is the center of your chart. The results show your Day Master, elemental balance, and how the five elements interact in your birth chart. For a deeper narrative, explore our AI-powered reading.
True solar time correction
Birth time is corrected to true solar time using your latitude and longitude — the same calendar a practitioner would use. Two charts born minutes apart in different cities can land on different pillars.
Li Chun year boundary, not January 1
The year pillar switches at Li Chun (around February 4 in 2026), not on January 1. Common online tools get this wrong; we compute the boundary from the actual solar term instead of the Gregorian calendar.
Calculation is deterministic; AI writes the reading
Your Four Pillars, Day Master, and Five Elements are computed by a pipeline that returns the same chart every time. The reading prose is generated by a language model under a structured BaZi prompt set, not by free-form chat.
Private by default, 7-day fit guarantee
Your birth data stays tied to your account, never sold or shared with third parties. If a paid reading feels off, email support@xuanseal.com within 7 days: we will regenerate once when useful, then refund if it still is not a fit.
Chinese astrology readings are for entertainment and self-discovery purposes only. They should not replace professional advice for important life decisions. Always trust your own judgment and seek qualified guidance when needed.
Enter your birth date and time to generate your Four Pillars chart — Day Master, Five Elements balance, and personalized insights
Generate My ChartProvide your birth info to generate a precise Four Pillars chart and reading summary.