Birth Information
OndoDestiny.com · BaZi Four Pillars Calculator · © 2026
Four Pillars 사주팔자 (四柱八字)
Key Shen Sha 신살 (神殺)
Chart Pattern 격국 (格局)
Useful God 용신 (用神)
Five Elements 오행
Luck Pillars 대운 (大運)
| Age | Pillar 간지 | Stem 천간 | Branch 지지 |
|---|
Annual Luck 세운 (歲運) — current decade
| Year | Pillar 간지 | Stem TenGod | Branch TenGod | Hidden Stems |
|---|
Monthly Luck 월운 (月運) —
| Solar Term | From | Pillar | Stem TenGod | Branch TenGod |
|---|
📖 How to Use the BaZi Calculator
1Enter Your Birth Information▼
- Enter your solar (Gregorian) birth date — day, month, year.
- Select your birth hour — this is the most critical field. The Hour Pillar directly determines which of the 12 Hour Branches governs your chart's final pillar.
- Optionally search your birth city to apply true solar time correction (important for cities far from their timezone meridian).
- Click "Calculate BaZi Chart" to generate your Four Pillars.
💡 Unknown birth hour? Try several candidate hours and compare which chart's Day Master strength and Ten God patterns best reflect your lived experience.
2Understanding the Four Pillars▼
Each of the four columns (Year · Month · Day · Hour) contains one Heavenly Stem (天干) on top and one Earthly Branch (地支) below. Together they form your Eight Characters — the 八字 (BaZi).
| Pillar | What it represents |
|---|---|
| Year 年 | Ancestral energy, early childhood, social reputation, grandparents |
| Month 月 | Parents, career environment, the decade you grew up in — strongest external influence |
| Day 日 | You — your Day Master (日主) is the Stem of this pillar, the core of your identity |
| Hour 時 | Inner self, children, late-life fortune, your private ambitions |
The Hidden Stems inside each Earthly Branch add extra nuance — each branch conceals 1–3 stems representing deeper energies that activate under specific conditions.
3Day Master Strength (身強 / 身弱)▼
Your Day Master is one of 10 Heavenly Stems (甲乙丙丁戊己庚辛壬癸). Its strength — determined by the season of birth and supporting/opposing elements — shapes your entire reading.
| Type | Meaning |
|---|---|
| Strong 身強 | Self-reliant, independent, confident — needs outlets to channel excess energy. Benefits from elements that consume or control the Day Master. |
| Weak 身弱 | Collaborative, receptive, benefits from support. Favorable elements are those that produce or match the Day Master's element. |
Strength determines which elements are favorable (用神) and which are unfavorable (忌神) — the foundation of BaZi life guidance.
4The Ten Gods (十神)▼
Every stem and branch in your chart is defined by its relationship to your Day Master through one of 10 archetypal roles. These reveal personality layers and life patterns.
| God | Theme |
|---|---|
| 比肩 Rob Wealth / Friend | Peers, competition, independence, sharing |
| 劫財 Competitor | Rivalry, boldness, risk-taking |
| 食神 Eating God | Creativity, enjoyment, nurturing output |
| 傷官 Hurting Officer | Rebellion, talent, unconventional thinking |
| 偏財 Indirect Wealth | Windfall, speculation, father figure |
| 正財 Direct Wealth | Steady income, diligence, spouse (for males) |
| 七殺 Seven Killings | Pressure, ambition, authority challenges |
| 正官 Direct Officer | Career, discipline, official recognition |
| 偏印 Indirect Resource | Intuition, unconventional learning, isolation |
| 正印 Direct Resource | Support, mother figure, academic achievement |
5Special Stars & Combinations▼
- Nobleman Star (貴人 Guìrén) — Indicates times and people who bring unexpected help, support, and turning points.
- Peach Blossom (桃花 Táohuā) — Romantic magnetism and social charm. Strong social appeal and attraction energy.
- Six Combinations (六合) — Branch pairs that merge and transform element energy, often producing harmony or hidden strength.
- Six Clashes (六沖) — Branch pairs in opposition; create tension, change, or disruption in the pillar they affect.
- Six Harms (六害) — Subtle friction between specific branches; can manifest as undermining relationships or health issues.
- Three Penalties (三刑) — Self-punishing relationships between branches; often associated with legal matters or health.
6Ten Year Luck Pillars (大運 Da Yun)▼
Your life unfolds through a series of 10-year Luck Pillars, each governed by a new stem-branch pair that overlays your natal chart. These are the most important timing tool in BaZi.
- The current Luck Pillar is highlighted in the chart.
- Each pillar brings a new stem (upper half, years 1–5) and branch (lower half, years 6–10) influence.
- When the Luck Pillar element matches your favorable element, that decade tends to flourish. When it matches your unfavorable element, proceed with greater care.
- The starting age and direction of luck pillars depend on gender and whether the birth year stem is Yang or Yin.
💡 Major life events tend to cluster around years when the annual pillar clashes or combines with your Luck Pillar or natal chart.
7Using the AI Reading▼
- Choose one of five categories: Overall / Career / Love / Wealth / Health, then click "Get AI Reading."
- The AI interprets your Day Master type, Ten Gods pattern, element balance, and current Luck Pillar together — not isolated keywords.
- Readings reference classical BaZi principles and are tailored to your specific chart data.
- Use readings as a reflective tool to surface patterns you may not have consciously noticed — not as fixed predictions.
BaZi (八字) is a traditional Chinese metaphysical system used for self-reflection and life planning. All readings are for entertainment and personal insight only. They do not substitute for professional advice in medical, legal, financial, or psychological matters.