BaZi Calculator八字排盘
Your birth moment, written as eight characters. Read the map you were born with.
Generate your Four Pillars of Destiny (四柱八字) chart instantly. Includes solar time adjustment, Ten Gods, hidden stems, Shen Sha stars, and Luck Pillars, free.
One chart, four pillars of time
Every BaZi chart is built from four pillars, one each for the year, month, day, and hour of your birth. Together they form the eight characters that shape your story.
Ancestry, roots, and the early years.
Parents, upbringing, and career.
Yourself, and your closest partner.
Children, legacy, and the later years.
What Is a BaZi Chart?
BaZi (八字), also known as the Four Pillars of Destiny, is a Chinese astrological system that maps the energetic blueprint of your life based on your birth date and time. The term “八字” literally means “eight characters,” referring to the eight Chinese characters that make up your chart.
Unlike Western astrology which uses planetary positions, BaZi uses the Chinese calendar system of Heavenly Stems and Earthly Branches to create a snapshot of the cosmic energy present at the moment of your birth.
A BaZi calculator converts your Gregorian birth date into the Chinese solar calendar and generates your Four Pillars: Year, Month, Day, and Hour. Each pillar contains two characters, a Heavenly Stem and an Earthly Branch, forming the eight characters that practitioners analyse.
This free BaZi calculator includes solar time adjustment for accuracy, displays the Ten Gods (十神) relationships, shows hidden stems (藏干), detects over 20 classical Shen Sha stars, and calculates your Luck Pillars (大运), the 10-year cycles that govern how your fortune unfolds over time.
How to Use This BaZi Calculator
Enter Your Birth Details
Input your birth year, month, day, and hour. Select your birth city or timezone for accurate calculation.
Enable Solar Time
Click the clock icon to activate solar time adjustment. This corrects for the difference between standard timezone and true local solar time at your birth location.
Generate Your Chart
Submit to generate your Four Pillars chart with Heavenly Stems, Earthly Branches, Ten Gods, hidden stems, and Shen Sha stars.
What This BaZi Calculator Shows
Every layer of a classical chart, generated in seconds.
Heavenly Stems (天干)
The ten Heavenly Stems representing the five elements in Yin and Yang polarity: Jia, Yi, Bing, Ding, Wu, Ji, Geng, Xin, Ren, Gui.
Earthly Branches (地支)
The twelve Earthly Branches corresponding to the Chinese zodiac animals and their elemental compositions.
Ten Gods (十神)
The relationship between each element and your Day Master: Companion, Rob Wealth, Eating God, Hurting Officer, and more.
Hidden Stems (藏干)
The stems hidden within each Earthly Branch, revealing deeper elemental influences in your chart.
Shen Sha Stars (神煞)
Auxiliary stars derived from classical texts that add nuance to chart interpretation.
Luck Pillars (大运)
Your 10-year luck cycles showing how your fortune evolves through different life phases.
How to Read the Chart You Just Generated
Start with your Day Master
The single most important character in your chart is the top character of the Day pillar. That is your Day Master, and it stands for you. Everything else in the chart is read in relation to it. If you want the full walkthrough, start with this step-by-step guide to reading a BaZi chart.
Your Day Master is one of ten possibilities: a yin or yang form of Wood, Fire, Earth, Metal or Water. Yin Metal, for example, is the refined kind of metal, jewellery rather than an axe head, so it tends to read as precise, discerning and quality conscious rather than blunt or forceful.
Next to your Day Master the calculator prints a strength reading, from Very Weak through to Very Strong. This is not a score and it is not good or bad. It simply says whether the rest of your chart feeds your Day Master or drains it. A weak Day Master is not a weak person. It tells you which element you want more of, and that is the question the whole reading turns on.
Why true solar time can move a whole pillar
Clock time is a political convenience. Every country rounds its clocks to a standard meridian, so almost nobody’s clock agrees with the sun directly overhead. BaZi is built on the sun, not on the clock, which is why this free BaZi calculator corrects your birth time before it does anything else.
The size of the correction is worth seeing. Singapore keeps UTC+8, a zone centred on 120 degrees east, but Singapore actually sits at about 104 degrees east. That gap is roughly 65 minutes. A birth recorded at 2:00pm in Singapore is really 12:55pm by the sun.
That matters because the Hour pillar changes every two hours. A 2:00pm birth looks like it belongs to the Goat hour, but once corrected it falls in the Horse hour instead. The Hour pillar governs children and later life, and it is one quarter of your chart. Read off the clock, it would simply be wrong. This is the single most common error in free charts online.
What the Ten Gods are telling you
Beside each character the calculator prints a label such as Direct Wealth, Hurting Officer or Seven Killings. These are the Ten Gods, and they are not separate entities. Each one is just the relationship between that character and your Day Master.
There are five relationships, each in a yin and a yang form: what is the same as you, what you produce, what you control, what controls you, and what supports you. Wealth is what you control. Officer and Seven Killings are what control you, which is why they read as pressure, discipline and authority. Resource is what supports you, so it covers learning, mentors and protection.
Read the counts rather than any single label. Three of one god and none of another tells you where your life naturally concentrates, and where it does not. This is the basis of how a proper Ten Gods profile is built.
Reading your Luck Pillars
The chart you are born with does not change. What changes is the ten year period you are moving through, and those are your Luck Pillars.
Each one lasts about a decade and carries its own stem and branch, which enter your chart and interact with what is already there. The same natal chart can feel completely different in two different decades, which is why timing is the practical half of BaZi. A period that supplies the element your Day Master wants tends to feel like the wind is behind you. One that supplies more of what you already have in excess tends to feel like effort without return, and there is a way to work through a difficult 10 year phase.
Look at the phase you are in now, then at the one after it. That is where the useful planning happens.
BaZi Calculator FAQ
A BaZi calculator generates your Four Pillars of Destiny chart based on your birth date, time, and location. It converts your birth information into the Chinese calendar system and displays your Heavenly Stems, Earthly Branches, Ten Gods, and other chart elements used in BaZi analysis.
BaZi uses Solar Time (True Local Time), not standard clock time. Solar time accounts for your exact geographical longitude to determine when the sun is directly overhead. This can differ from clock time by up to 30+ minutes depending on your location within a timezone. Accurate BaZi charts require this solar time adjustment.
The Four Pillars represent four aspects of time at your birth: Year Pillar (ancestry, early life), Month Pillar (parents, career), Day Pillar (self, spouse), and Hour Pillar (children, later life). Each pillar contains a Heavenly Stem and Earthly Branch that form the basis of BaZi analysis.
The Ten Gods are relationship dynamics between the elements in your BaZi chart. They include: Companion, Rob Wealth, Eating God, Hurting Officer, Direct Wealth, Indirect Wealth, Direct Officer, Seven Killings, Direct Resource, and Indirect Resource. Each represents different life aspects and personality traits.
Knowing your exact birth time produces the most accurate BaZi chart, as it determines your Hour Pillar. However, you can still generate a useful chart with an approximate time. If your birth time is unknown, some practitioners use techniques to rectify the chart based on life events.
This calculator uses solar time adjustment for precision, a feature many free calculators omit. It calculates your chart based on the Chinese solar calendar (not lunar) and includes classical elements like Shen Sha stars. For the most accurate results, ensure you’ve entered your birth location correctly and enabled solar time.
BaZi uses the Chinese solar calendar, with Heavenly Stems and Earthly Branches, rather than planetary positions and zodiac signs. Where Western astrology maps the positions of planets at birth, BaZi maps the elemental energy of time itself: the year, month, day, and hour you were born. BaZi also places strong emphasis on timing through Luck Pillars (大运), the 10-year cycles that show how your fortune evolves across different life phases. Both systems offer insight, but through fundamentally different frameworks.
The Day Master (日主, Rì Zhǔ) is the Heavenly Stem of your Day Pillar. It represents you: your core identity, inherent nature, and the elemental lens through which all other chart elements are interpreted. The Ten Gods are all calculated relative to your Day Master. For example, if your Day Master is Jia Wood (甲木), Fire elements in your chart become your Eating God or Hurting Officer, while Earth elements become Wealth stars. Understanding your Day Master is the starting point of any BaZi reading.
Shen Sha (神煞) are auxiliary stars derived from classical Chinese texts such as the San Ming Tong Hui (三命通會) and Xie Ji Bian Fang Shu (協紀辨方書). They are calculated from the stems and branches in your chart and add nuance to BaZi interpretation. Common Shen Sha include the Nobleman Star (天乙貴人), Peach Blossom (桃花), Flying Horse (驛馬), Academic Star (文昌), and Sky Noble (天德貴人). This calculator detects over 20 classical Shen Sha stars across all four pillars.
Luck Pillars (大运, Dà Yùn) are 10-year cycles that overlay your birth chart. Each pillar introduces a new Heavenly Stem and Earthly Branch that interact with your original four pillars, shifting the elemental quality of that decade. In BaZi, much of the practical interpretation focuses on how your chart responds to the current Luck Pillar, whether it strengthens your Day Master, activates chart structures like combinations or clashes, or brings specific stars into prominence. Your Luck Pillars begin at a calculated age derived from your birth date and gender.
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