Free Zi Wei Dou Shu Calculator
See where your energy flows naturally. Over a hundred stars mapped across twelve life palaces — your tendencies, your timing, the rhythms that shape your life.
Your chart is calculated right in your browser — your birth details never leave this page. They are sent to our server only if you ask for a reading or report.
This is the outline of your star map. Twelve palaces. Over a hundred stars. The patterns you see here are real. What they mean for your specific timing — that is a deeper conversation.
You have the outline. See the full chart in context.
A full Star Chart reading connects all twelve palaces, luck cycles, transformations, and timing in one practitioner-reviewed report.
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Enter your Gregorian birth date. Zi Wei Dou Shu uses 12 life palaces and over 100 stars.
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What Is Zi Wei Dou Shu?
Zi Wei Dou Shu (ZWDS), often translated as Purple Star Astrology, is a classical Chinese destiny analysis system that maps over a hundred stars across twelve life palaces. Unlike Western astrology which tracks planetary movements against zodiac signs, ZWDS builds a structural map of your inherent tendencies based on your birth moment.
The Twelve Palaces
Your chart is divided into twelve palaces, each governing a life area: Life (your core self), Parents, Health, Wealth, Career, Travel, Friends, Spouse, Children, Property, Siblings, and Karma. Stars placed in each palace describe the energy at work in that area — not your fate, but your default operating pattern.
Stars and Transformations
The system uses 14 major stars (led by Zi Wei, the Purple Star) and dozens of auxiliary stars. Four special stars — the Four Transformations (Hua) — indicate where energy intensifies, stabilizes, collects, or dissolves in your chart. These transformations are what make each chart unique: two people born on the same day can have entirely different transformation patterns.
Why Use This Tool?
Most people go through life reacting to the same patterns without ever seeing them. This calculator shows you the outline — where your energy flows naturally and what seasons of life you are moving through. Not fortune-telling. Not vague horoscopes. A map.
Common Questions
What is Zi Wei Dou Shu?
Zi Wei Dou Shu (ZWDS), also called Purple Star Astrology, is a classical Chinese destiny analysis system that maps over a hundred stars across twelve life palaces to describe your inherent tendencies and timing.
What are the twelve palaces?
Your chart is divided into twelve palaces, each governing a life area: Life, Parents, Health, Wealth, Career, Travel, Friends, Spouse, Children, Property, Siblings, and Karma. Stars placed in each palace describe the energy at work in that area — your default operating pattern, not your fate.
What are the Four Transformations?
Four special stars — the Four Transformations (Hua) — indicate where energy intensifies, stabilizes, collects, or dissolves in your chart. They are what make each chart unique.
Is Zi Wei Dou Shu fortune-telling?
No. The chart maps patterns — where your energy flows naturally and what seasons of life you are moving through. It does not predict specific events.
Is the Star Chart calculator really free?
Yes. Chart generation and the automatic first-pass reading are free, with no account required. Paid deep readings are generated from your chart and reviewed by a practitioner before delivery.
Further Reading on Star Charts
- Two Maps, Same Life — Why ZWDS and BaZi see you differently
- Cross-Validation — when both systems agree, the signal is strong
- Your Horoscope Has Four Words. Chinese Astrology Uses Eight.
- The Star Encyclopedia — every star explained
Ready for a complete Star Chart Deep Reading? Explore our readings →
How this chart is calculated
Chart generation is deterministic — the same birth data always produces the same chart. Calculation follows classical rules: true solar time correction, solar-term month boundaries, and gender-specific Luck Cycle direction. The entire engine runs in your browser — chart calculation never sends your birth details to our server.