Chinese Astrology

BaZi Calculator - Four Pillars of Destiny

BaZi (八字, Eight Characters) is the Chinese astrological system that maps your birth energy through time, the Five Elements and the Ten Cosmic Gods across a sixty-year cycle.

BaZi Calculator - Four Pillars of Destiny

Enter your exact birth date, time and place to calculate your four pillars

Explore Every Pillar in Depth

Each aspect of the BaZi map has its own reading - select one to go deeper

BaZi Five Elements: Wood, Fire, Earth, Metal, Water

What is BaZi - Four Pillars

BaZi (四柱命理, "Four Pillars of Destiny") is the most precise Chinese birth astrology system. Each pillar - Year, Month, Day and Hour - consists of a Heavenly Stem and an Earthly Branch that together reveal your Element, Day Master and ten-year luck cycles (Da Yun).

The Day Master (the Heavenly Stem of the Day Pillar) defines your core character, how you manifest energy and how you give and receive love. The Ten Gods describe the dynamic relationships between the five elements present in your chart.

The ten-year Luck Pillars (Da Yun) show which elemental cycles dominate each decade of your life, revealing periods of expansion, consolidation, challenge or transformation.

BaZi and I Ching: The Same Root

BaZi and the I Ching share the same cosmology: the Five Elements (Wood, Fire, Earth, Metal, Water), yin-yang and the 64 hexagrams that correspond to the 64 Stem-Branch pairs of the 60-year Jia Zi calendar.

Each pillar in your BaZi chart can be read as an I Ching hexagram. The Earthly Branches of the Year and Day evoke specific trigrams, linking your natal map to the 64 archetypal situations of the Canon of Changes.

Explore the BaZi - I Ching connection →

How to use the BaZi calculator

  1. 1Enter your exact birth date, time and place. The hour is critical: it determines the Hour Pillar and can shift your Day Master if you were born close to midnight.
  2. 2Read each Heavenly Stem and Earthly Branch separately and then as the four-pillar whole. Identify your Day Master and the dominant five elements.
  3. 3Study the ten-year Luck Pillars to see which elemental cycles dominate each decade and when your useful element is most active.
  4. 4Consult the in-depth aspects (above) to interpret the Ten Gods, Hidden Stems and the I Ching connection.

BaZi Four Pillars Reading - Free Chinese Astrology Chart

BaZi - the Four Pillars of Destiny (四柱命理, sìzhù mìnglǐ) - is one of the oldest and most precise systems in Chinese metaphysics. It reads the exact moment you were born as four pairs of characters: each pair a heavenly stem and an earthly branch, each representing a specific year, month, day and hour. Together, these four columns encode the elemental landscape of your life. Not as prediction - as pattern. A map of tendencies, strengths, recurring tensions, and the timing of when different forces become available.

The Day Master

The stem of your day pillar is the starting point of everything. It is you - not the life around you, not what you inherited, but the core nature from which your entire chart is read. Ten heavenly stems map to five elements in yin and yang polarities: yang wood (甲), yin wood (乙), yang fire (丙), yin fire (丁), yang earth (戊), yin earth (己), yang metal (庚), yin metal (辛), yang water (壬), yin water (癸). Each carries a distinct texture of being - the tall tree, the candle, the mountain, the jewel, the ocean. Knowing your Day Master is the single most orienting thing BaZi can give you. Every other element in the chart is read in relationship to it.

The Five Elements

Wood, Fire, Earth, Metal and Water circulate through your eight characters - four stems and four branches, plus hidden stems inside each branch - in specific weights. No chart is perfectly balanced, and balance is not actually the goal. The question is which elements support your Day Master (resource and friend stars), which your Day Master controls or generates (output and wealth stars), and which control the Day Master (officer stars). The interplay between these weights shapes how you work, how you manage money, how you relate to authority, and where life tends to push back.

The Ten Gods

When you map each character to its relationship with the Day Master, you arrive at one of ten archetypal roles: Friend, Rob Wealth, Eating God, Hurting Officer, Direct Wealth, Indirect Wealth, Direct Officer, Seven Killings, Direct Resource, Indirect Resource. These are not fixed personality labels. They are dynamic forces in your chart that describe tendencies, natural gifts, recurring patterns in relationships and finances, and the flavor of the major decade cycles that unfold through your life.

The Four Pillars

Year pillar: the energy you were born into - your generational inheritance, early social environment, the ancestral current. Month pillar: your parents, career path, primary mode of engaging the outer world. Day pillar: you, and your most intimate relationships - the spouse palace lives in the branch beneath your Day Master. Hour pillar: your children, your later years, the inner life you do not always show.

How to use this reading

Enter your date and hour of birth. The widget calculates your four pillars from the lunar-solar calendar, identifies your Day Master, maps the Ten God relationships across all eight characters, and shows the Five Element distribution including hidden stems. Read your Day Master first - it is the lens through which everything else in the chart is seen. Then look at what supports it, what challenges it, and what the heaviest stars suggest about your natural tendencies in work and relationships.