Feng Shui Kua Number Calculator
Calculate your Eight Mansions (Ba Zhai) Kua Number and personalized auspicious compass directions instantly.
Input Parameters
Live Result
Details
Steps
Sum last 2 digits of birth year
Apply gender-specific Kua formula
Map Eight Mansions group & directions
Quick Answer & Understanding Your Result
A Feng Shui Kua Number Calculator determines your personal Trigram (Gua/Quái) and classifies you into East or West Life Groups to align compass directions.
Core Mathematical Classification
- East Life Group (Dong Si Ming): Kua Numbers 1 (Kan), 3 (Zhen), 4 (Xun), 9 (Li) — Best directions: North, South, East, Southeast.
- West Life Group (Xi Si Ming): Kua Numbers 2 (Kun), 6 (Qian), 7 (Dui), 8 (Gen) — Best directions: Northwest, Southwest, Northeast, West.
- Male vs Female Algorithm: Male and female born in the same calendar year receive distinctly different Kua numbers.
The 4 Lucky & 4 Unlucky Sectors
- Auspicious Sectors: Sheng Chi (Wealth & Vitality), Tian Yi (Health & Doctors), Yan Nian (Longevity & Harmony), Fu Wei (Stability & Growth).
- Inauspicious Sectors: Jue Ming (Total Loss), Wu Gui (Five Ghosts), Liu Sha (Six Killings), Huo Hai (Mishaps).
Input your birth year and biological sex above to calculate your exact Kua Number and direction blueprint.
Formula & Calculation Logic
Mathematical FormulaCalculation parameters:
- Solar Year of Birth: Based on the Lich Xuan (Start of Spring ~Feb 4th) solar term.
- Special Rule for 5 (Center): Males with calculation result 5 assign to Kua 2 (Kun); females assign to Kua 8 (Gen).
Step-by-Step Guide
Select Gregorian Birth Year
Choose your year of birth (take note if born before February 4th Li Chun).
Select Biological Sex
Pick Male or Female (formulas differ by gender polarity).
Analyze 8 Direction Map
Receive personalized desk alignment, bed positioning, and main entrance orientations.
Worked Examples Table
| Example | Input Values | Calculated Result | Explanation |
|---|---|---|---|
| Male Born 1990 | Best directions: Southeast (Sheng Chi), East (Tian Yi), South (Yan Nian), North (Fu Wei). | ||
| Female Born 1990 | Best directions: Northeast (Sheng Chi), West (Tian Yi), Northwest (Yan Nian), Southwest (Fu Wei). |
Frequently Asked Questions
Evidence-Based Methodology & Authoritative References
Classical Ba Zhai Ming Jing (Eight Mansions Bright Mirror)
International Feng Shui Association (IFSA)
Standard: ISO / W3C / IETF Authoritative Domain Standard
Formula: Male Kua = (100 - Last 2 Digits of Year) mod 9 (Pre-2000) or (9 - Sum of Digits) mod 9 (Post-2000)
Last Reviewed: August 21, 2026
Primary Source: Classical Ba Zhai Ming Jing (Eight Mansions Bright Mirror)
Reference Document: International Feng Shui Association (IFSA)
Computation Privacy: 100% client-side 0ms computation, zero data retention
Traditional calendar, cultural, and spiritual calculations are derived from Eastern cultural folk traditions and historical reference literature for personal research and cultural appreciation.
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Calculated results are modeled based on standard scientific and mathematical formulas. Please verify with domain-specific technical documentation for specialized applications.