Free Zi Wei Dou Shu Calculator
Purple Star Astrology (紫微斗數) computed by the classical rules: twelve palaces, the fourteen major stars with the minor star systems, Xun and Jie voids, decade luck cycles and annual readings.
What you need
A Zi Wei chart rests on four facts. Get one wrong and the chart is no longer yours:
- Date of birth — enter the Gregorian date; the tool converts to the lunar calendar and the sexagenary cycle.
- Hour of birth — the most important one. It fixes the Life Palace and the Body Palace.
- Gender — decides the direction of the decade cycles.
- Solar or lunar input — either works; the conversion, including leap months, is handled for you.
What the chart contains
- Twelve palaces — Life, Siblings, Spouse, Children, Wealth, Health, Travel, Friends, Career, Property, Fortune, Parents.
- Fourteen major stars plus the minor systems, the Chang Sheng, Tai Sui and Lu Cun cycles.
- Xun and Jie voids — the “empty” and “severed” markers that soften or cut a palace.
- Decade luck and annual cycles, with the monthly limit shown alongside.
- Star layers can be switched on and off so a beginner is not buried under two hundred names at once.
The 11 p.m. question
This school follows the convention that the Zi hour rolls the date forward: from 23:00 you are already on the next day, while 00:00–01:00 keeps the current date. Schools differ here, so a chart computed elsewhere may place your Life Palace differently. We state the rule openly rather than hide it.
Read more
Related tools: BaZi · I Ching · Chinese almanac · Feng shui · Qi Zheng Si Yu · Qi Men Dun Jia · Name analysis · Wedding date · Building year · Feng shui ruler · Da Liu Ren
Frequently asked questions
What is Zi Wei Dou Shu?
Are the stars real stars?
Do I need my exact birth minute?
What if I do not know my birth hour?
Do I need an account?
Experts of the Academy
Finished the chart and still unsure about something? Book directly with an expert of the Academy — Zi Wei Dou Shu and other systems. Consultations are currently held in Vietnamese. Consultations are currently held in Vietnamese.
