BaZi Calculator八字排盘

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 — 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) — 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.