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Birth charts
Read the four pillars without rushing
Learn to map the eight characters of a BaZi chart onto a blank page, naming each column and row before jumping into symbolic meanings.
Free BaZi Birth Chart Calculator
Enter a Gregorian birth date, local recorded clock time, and birthplace time zone to generate a traditional Four Pillars chart. All calculations run locally in your browser memory without accounts or data uploads.
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Begin with the details.
Your birth details stay in memory only while this page is open. They are never uploaded, saved in your browser, or placed in share links. Clear the form when you finish on a shared device.
How the calculation works
Calculations use your recorded local clock time and IANA time zone, including historical daylight-saving rules. Astronomical solar terms set the year and month boundaries, while the day pillar changes at local midnight. No longitude-based true-solar-time correction is applied.
If your birth time falls in a daylight-saving transition, the tool will explain whether that clock time was missing or repeated. An uncertain birth time cannot give a reliable hour pillar.
The chart shows four heavenly stems and four earthly branches. Counts of their five phases describe these eight visible characters only. They do not measure overall strength, reveal hidden stems or prescribe a missing element.
YEAR · MONTH · DAY · HOURFour pillars.
Four pillars.
Room for your own meaning.
Your chart will appear here. No account, sign-up or birth-data upload.
Keep curiosity. Keep your agency.
BaZi belongs to a cultural tradition. A chart cannot diagnose you, establish what will happen or tell you which choices to make. Use it as an invitation to reflect, and leave aside anything that does not help.
Read the chart.
Keep your perspective.
More stories ↗02
Birth charts
Meet your Day Master on a little card
Find the Day Stem on your calculated chart and write a short, original caption in your notebook using three distinct creative approaches.
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Birth charts
Turn eight characters into a five-color palette
Translate the eight visible character assignments of a birth chart into a custom five-color paper collage or digital swatch in your journal.
Before you begin
Reading a BaZi Birth Chart ↗Why do I need an exact birth time and birthplace time zone?
The Hour Pillar changes every two civil hours, and the Day Pillar rolls over at midnight. Selecting an explicit IANA time zone ensures historical daylight saving rules are applied accurately. If a civil clock time is missing or repeated during a daylight saving transition, or if you do not know your birth time, the calculator cannot verify a complete four-pillar chart.
How does this calculator handle calendar boundaries and five-phase counts?
Years and months follow astronomical solar terms, while days change at civil midnight without true solar time adjustments. The chart displays the four pillars, identifies your Day Master, and counts the five phases across the eight visible stems and branches. It does not compute hidden stems, chart strength, luck cycles, or Western planetary placements.
Is this BaZi calculator free, and is my birth information saved?
The calculator is completely free and runs entirely inside your browser's active page memory. We do not use user accounts, and your birth details are never uploaded or stored on a server. Public links to this tool carry no personal inputs, and optional reflection cards include only your Day Master symbol and general prompts.