Four Pillars · 四柱
See the Heavenly Stem, Earthly Branch, hidden stems, Na Yin, and Twelve Growth Stage for each pillar.
FREE BAZI CHART
Free BaZi Calculator
Enter your birth details to calculate your Four Pillars, Day Master, Five Elements, Ten Gods, and Luck Cycles—with clear English guidance.
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Inside your chart
What this BaZi calculator reveals
The Chinese characters remain visible because they carry the original vocabulary. Every major term is paired with plain English so you can explore the chart without already knowing Chinese metaphysics.
This BaZi calculator creates a complete Four Pillars chart that is readable at first glance. It keeps Year, Month, Day, and Hour together, then shows where the Day Master, hidden stems, Five Elements, and Ten Gods fit into the same structure.
Day Master · 日主
Find the element and polarity at the center of your BaZi chart, with a transparent support estimate.
Ten Gods · 十神
Read every Ten God in English and Chinese, including Resource, Wealth, Officer, and Companion relationships.
Luck Pillars · 大运
View the sequence and timing of your 10-year Major Luck Cycles in a clear visual timeline.
From birth details to chart
How the BaZi Calculator works
The calculator keeps the process reviewable: you provide the birth record, choose the time rules, and receive a chart that shows both the traditional characters and clear English labels.
Enter your birth details
Add the birth date, local time, gender, and birthplace. You can use a solar or lunar date and leave the birth hour unknown when the record is uncertain.
Review the calculation settings
Confirm the matched city, historical timezone, true solar time option, and day-boundary rule. These settings make the assumptions behind the chart visible.
Explore the complete chart
See the Four Pillars, Day Master, Five Elements, hidden stems, Ten Gods, branch interactions, and 10-year Luck Pillars in one result.
TRUE SOLAR TIME
BaZi Calculator method
Recorded civil time
10:30
−61 MIN
True solar time
09:29
Longitude correctionLondon · 0.13° W
09:29
YearStable
MonthStable
DayStable
HourMay change
A correction near a two-hour boundary can change the Hour Pillar in your BaZi chart.
Method & precision
Why an accurate BaZi Calculator uses solar time
Civil clocks follow broad timezones. Traditional Chinese hour branches follow the Sun's apparent movement, so birthplace can shift the time used to build your Four Pillars.
Location-aware calculation
Birthplace provides the longitude and historical timezone used by the chart engine.
Explicit day boundary
Use midnight by default, or choose the traditional Zi-hour boundary at 23:00.
Transparent assumptions
Every result records whether true solar time was applied and shows the correction.
Read with context
How to use a BaZi calculator and read your Four Pillars
A BaZi calculator can organize a detailed calendar-based chart in seconds. The useful part is the order of reading: confirm the inputs, find the Day Master, and then look at how the pillars support or challenge one another.
The chart is a traditional framework for study and reflection, not a shortcut to a fixed prediction. Keep practical decisions grounded in the information and advice that belongs to the situation at hand.
Verify the birth details first
A BaZi calculator is only as useful as the date, local time, and birthplace behind it. Check the calendar mode, city match, and time setting before treating the result as a chart you can read. If the recorded hour is uncertain, leave it unknown instead of inserting a convenient default; the Year, Month, and Day Pillars can still be useful without pretending the Hour Pillar is certain.
Find the Day Master before the labels
The upper character of the Day Pillar is the Day Master. It gives the reference point for the Five Elements and Ten Gods, so it is more useful to start there than to chase one dramatic label in isolation. A Day Master is not a personality test or a verdict. Its role changes with the season, roots in the branches, hidden stems, and the relationships visible across the rest of the BaZi chart.
Read the four pillars as one structure
Year, Month, Day, and Hour each add context. Compare the visible stems, earthly branches, hidden stems, and season before moving on to Luck Pillars or a deeper interpretation. A later timing cycle does not replace the natal structure; it gives another period to compare with it. Reading in that order keeps a BaZi calculator from becoming a list of isolated keywords.
Why the birthplace field belongs in a BaZi chart
A clock time describes a broad timezone, while the local solar relationship varies by longitude and date. That difference is usually small, but near a traditional two-hour boundary it can matter to the Hour Pillar. The birthplace search gives the calculator a timezone and longitude to work from, and the result shows whether true solar time was applied. Treat that information as a calculation assumption you can review, not as a hidden adjustment made without your knowledge.
Use this BaZi calculator to ask better questions about the chart in front of you. Is the date represented correctly? Which element is the Day Master? Which pillars are visible, and which relationships are only present in hidden stems? That sequence is more useful than treating a single symbol as an answer on its own, especially when a chart contains mixed or seemingly conflicting signals.
Learn BaZi
Read the chart, not just the symbols
Questions, answered
BaZi calculator FAQ
A clear chart starts with clear assumptions. These are the questions that most often affect a first BaZi calculation.