Four Pillars of Destiny Calculator
Enter your birth date and time to generate your complete Chinese astrology chart. Accurate BaZi (八字) calculation with true solar time calibration and lunar date conversion.
🧮 Calculate My Chart Now →What Is the Four Pillars System?
The Four Pillars of Destiny (四柱八字), also known as BaZi, is a 2,000-year-old Chinese astrological system. It uses your exact birth moment to build four pillars — Year, Month, Day, and Hour — each containing a Heavenly Stem (天干) and an Earthly Branch (地支). Together these eight characters (八字) form the foundation of your destiny analysis.
Heavenly Stems
Ten stem characters (甲 to 癸) that represent the five elements in yin and yang forms — the active energies in your chart.
Earthly Branches
Twelve branch characters (子 to 亥), each with hidden stems and seasonal associations that deepen the reading.
True Solar Time
Our calculator calibrates your birthplace longitude so your birth hour pillar is as accurate as possible.
Lunar Calendar
Automatically converts to Chinese lunar date and identifies the correct solar term boundaries for your month pillar.
What's In Your Chart?
- Eight Characters (八字): your four pillars in stem–branch pairs
- Ten Gods (十神): the 10 relationships between your Day Master and other stems
- Hidden Stems (藏干): deeper energies inside each branch
- Na Yin (纳音): the elemental sound classification of each pillar
- Five Element Strength (五行能量): how Wood, Fire, Earth, Metal, and Water balance in your chart
- Luck Pillars (大运): your 10-year life phases from childhood onward
- Current Year Energy (流年): how this year's energy interacts with your chart
How Accurate Is This Calculator?
BaziMirror uses precise solar term calculations and true solar time correction for your birthplace. Traditional practitioners rely on the same astronomical foundations. Your reading is provided for insight and personal growth — the future is always shaped by your own choices.