Kua Number and Feng Shui Directions

Enter your birth date and gender to find your personal Kua (卦) number and the Eight Mansions directions associated with it. Cultural guidance for reflection - not rules.

Enter Birth Details

Day is used only to apply the Li Chun (~Feb 4) year boundary, consistent with the Bazi year system.

Compass Overview

Green = auspicious. Gold = personal direction (Fu Wei). Warm tones = unfavourable. Not to compass scale.

Favourable Directions (吉方)

These four directions are associated with positive energy for your Kua number. Use them as loose orientation guidance for your main desk, sleeping position, or key areas of your home - not as strict rules that must be followed.

Directions to Be Aware Of (凶方)

These four directions are considered less favourable. Traditional guidance suggests noting them when arranging key pieces of furniture or orienting your main workspace - treated as a gentle consideration, not a firm prohibition.

About This Calculation

  • System: Eight Mansions (八宅風水). The Kua number links each person to one of the eight trigrams (八卦), which in turn assigns them four favourable and four unfavourable compass directions.
  • Year boundary: The same Li Chun (立春, ~February 4) boundary used by the Bazi calculator. People born before Li Chun in a given year use the prior astrological year. This ensures consistency with the broader system.
  • Formula (born before 2000): Reduce the astrological year to a single digit by summing digits. Male: 10 minus that digit. Female: that digit plus 5, reduced to a single digit. Kua 5 is replaced by 2 (male) or 8 (female).
  • Formula (born 2000 and later): Same digit reduction. Male: 9 minus that digit. Female: that digit plus 6, reduced to a single digit. Kua 5 is still replaced by 2 (male) or 8 (female).
  • Spot checks: Male born 28 March 1994 (astro year 1994): 1+9+9+4 = 23, 2+3 = 5, 10 - 5 = 5, replaced with Kua 2. Male born 10 April 2001 (astro year 2001): 2+0+0+1 = 3, 9 - 3 = Kua 6. Female born 1 February 1980 (before Li Chun, so astro year 1979): 1+9+7+9 = 26, 2+6 = 8, 8+5 = 13, 1+3 = Kua 4.
  • East and West groups: Kua 1, 3, 4, 9 form the East Group (東四命). Kua 2, 6, 7, 8 form the West Group (西四命). East group people are said to benefit from East group directions; West group from West group directions.
  • What this is not: A professional feng shui consultation. The Eight Mansions system is one method among many in feng shui, and its practical application involves far more than compass directions alone. Use this as cultural orientation and a starting point for your own reflection.
For cultural interest and self-reflection only. Not fate, medical, financial, or professional advice. Consult a qualified feng shui practitioner for a full assessment.