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Eight Mansions (Ba Zhai)

Feng Shui Calculator Online
Feng Shui Ba Zhai calculator app on smartphone, showing colorful Bagua map over floor plan with Gua numbers and life sectors.
Know your Gua.
Unlock personal eight zones
Ba Zhai — one of the oldest and most precise systems of classical Feng Shui. Use your date of birth and gender, and discover how every corner of your home either supports or drains your personal energy.
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What is Eight Mansions (Ba Zhai)?

Ba Zhai (八宅, "Eight Mansions") is a branch of classical Feng Shui dating back to the Tang Dynasty. It divides every dwelling into eight directional sectors, each carrying a specific energetic quality — either supportive or challenging — unique to the person living there.
The system is built on two pillars: your personal Gua number — derived from your birth year and gender — and the precise compass orientation of your home. When these two align, the results are practical and measurable.

Later Heaven LayoutChinese Magic Knot Separator

☯️ Personal trigram (Gua)

Calculated from birth year and gender. Determines your personal energy group — East or West — and your four auspicious and four inauspicious directions.

🧭 Zone overlay

Your personal directions are overlaid on the house map. Where they align — auspicious person zones meeting auspicious house zones — those are your power positions.

🏠 House orientation (Zhai Gua)

Calculated from birth year and gender. Determines your personal energy group — East or West — and your four auspicious and four inauspicious directions.

🛏️ Practical application

Bedroom placement, desk orientation, stove direction, door alignment — Ba Zhai turns abstract theory into specific, actionable recommendations.

Your Gua Number

The Gua number is your energetic fingerprint within the Ba Zhai system. It is derived mathematically from your year of birth and gender, placing you in one of nine trigrams — each belonging to either the East Life Group or the West Life Group.
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4

Xun — Wind

East Group
巽 · Wood (Yin)
Communication, wealth, creativity. SE direction activates career
and financial flow.
Trigram ☴ XUN (xùn)

1

Kan — Water

East Group
坎 · Water
Intuition, adaptability, depth. Thrives in North-facing spaces. Strong connection to career and wisdom.
☵ KAN (kǎn) - Trigramm element nature visualisation

2

Kun — Earth

West Group
坤 · Earth
Receptivity, nurturing, stability. Benefits from SW orientation. Linked to relationships and household harmony.
☷ KUN (kūn) - Trigramm element nature visualisation

3

Zhen — Thunder

East Group
震 · Wood (Yang)
Initiative, growth, ambition. Best in East-facing positions. Drives projects and new beginnings.
 ☳ ZHEN (zhèn) - Trigramm element nature visualisation
Black grid showing a Lo Shu square with cardinal and intercardinal directions, essential for Flying Stars Feng Shui analysis.

7

Dui — Lake

West Group
兌 · Metal (Yin)
Joy, expression, social connection. West-facing spaces support creativity and children.
☱ DUI (duì) - Trigramm element nature visualisation

8

Gen — Mountain

West Group
艮 · Earth (Yang)
Knowledge, stillness, introspection. NE placement benefits study, meditation, and personal development.
☶ GEN (gèn) - Trigramm element nature visualisation

9

Li — Fire

East Group
離 · Fire
Clarity, recognition, fame. S-facing positions boost reputation and intellectual achievement.
☲ LI (lí) - Trigramm element nature visualisation

6

Qian — Heaven

West Group
乾 · Metal (Yang)
Leadership, authority, precision. NW orientation supports mentors and recognition.
☰ QIAN (qián) - Trigramm element nature visualisation
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How the Gua number is calculated

A simple two-step formula — but with three adjustments most calculators get wrong.

1. Sum digits

Take the last two digits of your birth year and add them together. If the result is two digits, add again until you get a single number. For example: 1985 → 8+5 = 13 → 1+3 = 4

2. Male / Female

The formula differs by gender. Men subtract the result from 10 (born after 2000 — from 9). Women add 5 to the result (born after 2000 — add 6). This gender split is non-negotiable in classical Ba Zhai — it reflects the yin/yang polarity of the trigram system.

3. Result: Gua 1–9

Your final number is your Gua. If the result is 5 — men become Gua 2, women become Gua 8. There is no Gua 5 in the Eight Mansions system. This is the most common point of confusion in manual calculation.
Knowing your Gua number is the foundation of any Ba Zhai analysis. Without it, you cannot determine your four auspicious directions, your life group, or how your personal energy aligns with the space you live in. Everything in the Eight Mansions system starts here.
You may have noticed there is no Gua 5 in the grid above. This is intentional — in classical Ba Zhai, the number 5 has no trigram of its own. Men born with a calculated result of 5 are reassigned to Gua 2 (Kun), and women to Gua 8 (Gen). This is one of the most common sources of error in manual calculation — along with the pre/post-2000 correction and the Li Chun solar boundary.
To make sure your Gua number is correct, use the Baguame calculator — it applies all three adjustments automatically.
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Eight Directions — Eight Destinies

Once your Gua number is known, each compass direction in your home receives a specific quality. Four zones work in your favor — use them for sleeping, working, and your main entrance. Four zones work against you — minimize activity there or redirect their energy.

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Four Auspicious Zones

Sheng Qi

Generating Breath
生氣 · Greatest Prosperity
The strongest positive direction. Best for sleeping position, main entrance, and wealth-related activities. Activates vitality, career growth, and financial opportunity.

Tian Yi

Heavenly Doctor
天醫 · Health & Healing
The health direction. Ideal for kitchen, stove orientation, and bedroom of those recovering from illness. Supports physical wellbeing and long-term vitality.

Yan Nian

Longevity
延年 · Relationships & Longevity
The relationship direction. Activates marriage luck, harmonious partnerships, and long-term stability. Best for master bedroom entrance facing.

Fu Wei

Steady Growth
伏位 · Personal Development
The mildest positive zone. Supports study, meditation, and stable personal growth. Good for home office and reading
spaces.

Four Inauspicious Zones

Jue Ming

Total Loss
絕命 · Strongest Negative
The strongest positive direction. Best for sleeping position, main entrance, and wealth-related activities. Activates vitality, career growth, and financial opportunity.

Huo Hai

Mishaps
禍害 · Accidents & Disputes
The strongest positive direction. Best for sleeping position, main entrance, and wealth-related activities. Activates vitality, career growth, and financial opportunity.

Liu Sha

Six Killings
六煞 · Betrayal & Lawsuits
Brings backstabbing, scandalous relationships, and legal disputes. Avoid activating this sector with active rooms; suppress with heavy, still elements.

Wu Gui

Five Ghosts
五鬼 · Instability & Fire Risk
Associated with theft, fire hazards, and unstable energy. Keep this zone quiet. Storage or utility rooms here reduce its negative
 influence.

East vs West Group

Every person and every house belongs to one of two groups. 

When they match — energy flows. When they conflict — remedies are needed.

West Group

Gua 2, 6, 7, 8 Your auspicious directions are West, Northwest, Southwest, and Northeast. Houses facing these directions work in your favour. The trigrams Dui, Qian, Kun, Gen, and the neutral centre belong to your group.
Feng Shui BaGua compass chart with red and green sectors, trigrams, Yin-Yang symbol, and Lo Shu numbers for Ba Zhai analysis.

East Group

Gua 1, 3, 4, 9 Your auspicious directions are North, East, South, and Southeast. Houses facing these directions support your energy naturally. The trigrams Kan, Zhen, Xun, and Li belong to your group.
Feng Shui Ba Zhai Bagua diagram with Yin Yang, Lo Shu numbers, 8 directions, and trigrams in green and red.

Your personal Ba Zhai map — in under two minutes.

Ba Zhai has been studied for centuries. The formulas, the trigrams, the directional tables — it takes years to internalize it all. 
But applying it to your home doesn't have to.
Feng Shui Ba Zhai calculator app on smartphone, showing colorful Bagua map over floor plan with Gua numbers and life sectors.
Ba Zhai (八宅, "Eight Mansions") is a branch of classical Feng Shui dating back to the Tang Dynasty. It divides every dwelling into eight directional sectors, each carrying a specific energetic quality — either supportive or challenging — unique to the person living there.
Baguame does the calculation for you.
Enter your birth year and gender — your Gua number is computed instantly, with all corrections applied. Upload your floor plan — the eight zones appear as a color-coded overlay, aligned to your compass north. Click any sector — and get a clear explanation of what that zone means for you personally, what to activate and what to avoid.
- No charts to memorize.
- No manual cross-referencing.
- No room for calculation errors.
Try it on your floor plan

Built for precision, not simplification

Every feature in Baguame was designed by a practitioner, for practitioners. No rounding. No shortcuts. No pop-astrology approximations.

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Floor plan overlay

Upload your floor plan and get an instant eight-sector grid aligned to compass north. Every zone color-coded directly over your actual rooms.
Ba Zhai Feng Shui calculator showing a house floor plan with an overlaid compass chart. Colored sections indicate auspicious and inauspicious directions like Success, Health, Relationship, and Total Loss for optimal chi.

Instant resident switching

Every person has their own Gua and their own zone map. Switch between residents from the dropdown — the overlay updates
in real time.
Digital Ba Zhai calculator showing a floor plan with Bagua sectors like Success and Relationship, and resident selection by Gua number.

Room-by-room analysis

Define your rooms once and Baguame shows exactly which Ba Zhai zone each one falls into. No guessing — the floor plan tells you directly.
Ba Zhai Feng Shui calculator displaying house floor plan, colorful Bagua overlay, and room selection.

Interactive sector select

Tap any zone to get the full breakdown: classical name, element, trigram, and what it governs for this resident
specifically.
Ba Zhai calculator output: floor plan with Bagua, blue 'Success' (Sheng Qi) sector, North, and detailed Feng Shui benefits.

AI sector analysis

Select any sector and ask the AI about your bedroom, desk, or kitchen. Contextual recommendations based on your Gua and zone quality.
Ba Zhai Feng Shui calculator showing a home's floor plan with auspicious and unlucky sectors like Success, Health, and Total Loss, guided by Master Ming.

Full display control

Toggle sector names, colors, compass directions, and building center on or off. Customize the overlay for personal use or client presentation.
Ba Zhai calculator interface displaying Bagua map settings, toggling elemental colors for sectors like Success and Total Loss.

How It Works (User Flow)

from plan to analisys in 60 Seconds
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Yellow folder with padlock, green download arrow, and blue document showing a floor plan for professional Feng Shui analysis.

1. Resister and Upload

Start a new project by uploading a floor plan or make a photo to your secure, cloud-based account
Golden compass with red and blue needle, a vital tool for professional Feng Shui direction analysis.

2. Align & Overlay

Set the North direction and instantly overlay the Flying Stars Charts on the plan automaticaly
Magnifying glass over a neutral-toned living room, analyzing furniture placement and wall decor for Feng Shui.

3. Analyze & Optimize

Use the interactive map to visually explain the energy flow to your clients directly on your screen.
Forget about manual drawings and math errors. Instead, let our platform handle the complex calculations. 
Ultimately, this allows you to focus purely on the interpretation and results.
Start My Full Analysis

Made for Every Practitioner

The afflictions do not care whether you believe in them. Disturbing these zones has documented consequences in classical practice — and the risk is highest when people are unaware.
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Feng shui Homeowners & Renters

Homeowners & Renters

You want your living space to feel right — not just look right. Ba Zhai tells you exactly where to place your bed, desk, and where to avoid
spending time.
🛏️ Bedroom optimization for better sleep and health
🖥️ Home office setup for focus and career growth
🍳 Kitchen and stove direction for family wellbeing
🚪 Main entrance analysis for incoming opportunities
Designers & Agents

Business Owners

Offer a unique, insightful service. Provide clients with an essential energetic overview of properties using our timeless Feng Shui tools, building trust and a distinct competitive advantage.
💺 CEO and leadership desk positioning
🤝 Reception area direction for client attraction
👥 Team workspace optimization for productivity
💰 Cash register and wealth zone activation
Feng Shui Enthusiasts

Professional Consultants

Speed up your analysis workflow. Baguame calculates in seconds what used to require a compass, graph paper, and 30 minutes of manual calculation per client.
⚡ Instant Ba Zhai grid for any resident
🗺️ Overlay on uploaded floor plans
🤖 AI-assisted sector analysis reports
📤 Shareable client-ready output
Analyze Your Space Now

Frequently Asked Questions

Get answers to common questions about our calculators and how they help create harmony in your home.
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Ba Zhai is a classical Chinese system based on compass directions and mathematical calculation. Western Feng Shui (BTB) aligns the Bagua to the front door regardless of compass orientation. They are fundamentally different systems — Ba Zhai requires an actual compass reading to work correctly.
Completely accurate — provided the correct birth year is used. The most common errors are ignoring the Li Chun solar boundary (around February 4th) and the pre/post-2000 formula adjustment. Baguame applies both automatically.
If you were born before Li Chun (approximately February 4th), you use the previous year for your Gua calculation. For example, someone born on January 20th, 1990 calculates their Gua using 1989. Baguame prompts you for this automatically.
Yes. Most recommendations involve furniture placement and sleeping direction — not structural changes. Even in a rental, optimizing your bed orientation and desk position can make a meaningful difference.
This is common. When a person and their house belong to different groups, the priority is usually given to the most-used spaces — bedroom and main working area. Specific remedies can also be applied to reduce the conflict.
Yes, and this is the normal situation for families. Baguame lets you calculate every resident's Gua and compare their zone overlays to find the best shared positions — particularly for the master bedroom and main living areas.
The personal Gua number never changes — it is fixed from birth. However, combining Ba Zhai with the annual Flying Stars adds a time dimension that updates each year. Baguame supports both systems simultaneously.
Not for the calculation itself. But to apply the results to your home, you need to know the compass orientation of your main entrance. A basic phone compass app is sufficient for most residential applications.
It means that zone is being "wasted" on a low-activity space. In classical practice, the remedy is either to increase activity in an adjacent auspicious zone or to apply specific enhancements. The AI analysis in Baguame addresses exactly this scenario.
Ba Zhai is a static system — your personal directions never change. Flying Stars is a dynamic system where energy patterns shift by year, month, and hour. Used together, they give a complete picture: Ba Zhai provides the permanent personal map, Flying Stars adds the temporal layer.
We appreciate your interest in Baguame and look forward to hearing from you. Let's create harmony together!
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