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ShenQi

Online BaZi calculator: build your birth chart

Build a Four Pillars chart from a date and time of birth. The calculator shows the chart structure and the core data for further analysis.

Birth details

Profile, date, time and parameters for calculating your chart

What you receive after the calculation

The calculator builds a basic BaZi chart from the entered birth details. This becomes the starting structure for further reading and analysis.

  • the chart's four pillars: year, month, day and hour;
  • the Heavenly Stems and Earthly Branches of each pillar;
  • the chart structure calculated from the selected settings;
  • a foundation for further independent or expert analysis.

No single symbol or indicator defines a person or their future. A chart is read through the relationships between its elements, the period and the person's life context.

How the calculator works

  1. Step 1

    Enter birth details

    Enter the date of birth, gender and, when known, the exact time of birth.

  2. Step 2

    Refine the time settings

    When needed, enable solar-time calculation and enter the place information required to correct the birth time.

  3. Step 3

    Build the chart

    The calculator determines the Four Pillars and displays the BaZi chart structure.

What is BaZi

BaZi, or the Four Pillars, is a system for analysing birth details that developed in the Chinese metaphysical tradition. A chart contains four pairs of signs associated with the year, month, day and hour of birth. Each pair includes a Heavenly Stem and an Earthly Branch.

ShenQi uses a BaZi chart as an analytical model, not as a verdict or a promise of inevitable events. It helps structure observations about a person, periods and possible conditions for action while leaving decisions and responsibility with the person.

Why accurate birth details matter

The birth date determines the basis of the calculation, while the birth time is used for the hour pillar. If the time is unknown or approximate, part of the chart may differ, especially near the boundary between two-hour periods.

Solar time accounts for the position of the place of birth relative to official clock time. It is especially important near a boundary, where a correction can change the hour pillar.

If the exact time is unknown, you can still build the chart, but this limitation should be considered when reading the result.

How to use the result

Start with the chart structure and avoid drawing a conclusion from one sign. Consider the relationships between elements and the question you are exploring. The calculation can support learning, independent analysis or a consultation with a specialist.

A chart can help examine conditions and possible actions, but it does not replace a person's decision or guarantee a specific event.

Frequently asked questions

BaZi is a system for building and analysing a chart from a date and time of birth. The chart contains four pillars: year, month, day and hour. It is used as a structure for exploring a person's characteristics, periods and conditions, not as an inevitable script for the future.

The chart shows the Four Pillars, Heavenly Stems and Earthly Branches calculated from the birth details. Their relationships provide a foundation for further analysis. A single chart element does not provide a complete conclusion about a person or situation.

A basic calculation requires a date of birth and gender. An exact time of birth makes it possible to build the hour pillar. When solar time is used, the calculator also accounts for the place-of-birth information needed to correct the time.

Yes. If the exact time is unknown, the chart is built without a reliable hour pillar, and this limitation should be considered when reading the result. If the time is approximate, it can help to check the neighbouring two-hour periods.

Official time-zone time does not always match local solar time. Correcting for the place of birth helps identify the hour pillar more accurately, especially when the birth time is near a period boundary.

A calculation converts birth details into the BaZi chart structure. Interpretation connects the chart elements and considers them in the context of a particular question, period and life situation. An automated calculation is therefore the foundation of analysis but does not always replace a complete interpretation.

Yes. The basic BaZi chart calculation is available free of charge and without signing in. Separate courses and consultations may be paid, but they are not required to build a basic chart.

Technical accuracy depends on correct source details, time-handling rules and the calculation model. Even an accurately built chart requires careful interpretation: it does not guarantee an event and should not be read from a single indicator.

No. ShenQi treats the chart as an analytical model of conditions and relationships, not as a verdict. It can help reveal characteristics and possible ways of acting, but decisions and responsibility remain with the person.

Start by becoming familiar with the Four Pillars and the chart's main elements. You can then continue with a learning resource, independent analysis or a consultation when you need an answer to a specific question.

Explore BaZi in greater depth