Welcome to the Ondo Destiny Free BaZi
Calculator — your complete tool for
generating your Four Pillars of Destiny
chart instantly.
This guide will walk you through exactly
how to use the calculator and understand
your results.
Step 1: Enter Your Birth Information
Birth Year
Enter your year of birth using four digits.
Example: 1990, 1985, 2001
Birth Month
Select your birth month from the dropdown.
January through December.
Birth Day
Enter the day of the month you were born.
Example: 15, 23, 7
Gender
Select Male or Female.
Gender affects the direction of your
Luck Pillars — an important calculation
in BaZi analysis.
Step 2: Enter Your Birth Time
Hour
Select the hour of your birth from
the dropdown.
The calculator shows the corresponding
Chinese hour branch for each time slot:
- 子 (Rat) — 23:00 to 01:00
- 丑 (Ox) — 01:00 to 03:00
- 寅 (Tiger) — 03:00 to 05:00
- 卯 (Rabbit) — 05:00 to 07:00
- 辰 (Dragon) — 07:00 to 09:00
- 巳 (Snake) — 09:00 to 11:00
- 午 (Horse) — 11:00 to 13:00
- 未 (Goat) — 13:00 to 15:00
- 申 (Monkey) — 15:00 to 17:00
- 酉 (Rooster) — 17:00 to 19:00
- 戌 (Dog) — 19:00 to 21:00
- 亥 (Pig) — 21:00 to 23:00
Unknown Birth Time
If you do not know your exact birth time,
check the “Unknown time” box.
The calculator will generate your chart
using only your Year, Month, and Day
pillars.
야자시 (Late-night Rat Hour)
This advanced option applies to those
born between 23:00 and 23:59.
In traditional BaZi, there are two
schools of thought:
- Standard: 23:00–23:59 belongs to 子時
of the SAME day - 야자시: 23:00–23:59 advances to the
NEXT day’s calendar date
If you are unsure, leave this option
in its default setting.
Step 3: Select Your Location and Timezone
Type your city name in the timezone
search box and select your location.
This is essential for accurate calculations,
especially for people born outside of
East Asia.
Daylight Saving Time (DST) is handled
automatically based on your selected
timezone — no manual adjustment needed.
Step 4: Click Calculate Four Pillars
Press the Calculate Four Pillars button
to generate your complete BaZi chart.
Understanding Your Results
Day Master (일간)
The first result shown is your Day Master —
the most important character in your
entire BaZi chart.
Your Day Master represents your core
identity, personality, and the lens
through which your entire chart is
interpreted.
There are 10 possible Day Masters:
- Yang Wood 甲 — The Oak Tree
- Yin Wood 乙 — The Vine
- Yang Fire 丙 — The Sun
- Yin Fire 丁 — The Candle
- Yang Earth 戊 — The Mountain
- Yin Earth 己 — The Soil
- Yang Metal 庚 — The Sword
- Yin Metal 辛 — The Jewel
- Yang Water 壬 — The Ocean
- Yin Water 癸 — The Rain
The Four Pillars Chart
Your chart displays four pillars:
Year (년주) · Month (월주) ·
Day (일주) · Hour (시주)
Each pillar shows:
- Ten God label (십신) — the relationship
between that character and your Day Master - Heavenly Stem (천간) — the upper character
- Earthly Branch (지지) — the lower character
- Element and polarity
- Hidden Stems (지장간) — the hidden energies
within each branch
Color Coding
Characters are color-coded by element:
- Green — Wood (목)
- Red — Fire (화)
- Yellow/Amber — Earth (토)
- Gold — Metal (금)
- Blue — Water (수)
Five Elements Balance
The Five Elements chart shows the
distribution of elemental energy
across your entire chart — including
stems, branches, and hidden stems.
This reveals your strongest and
weakest elements, which are key to
understanding your natural strengths
and challenges.
Luck Pillars (대운)
Your Luck Pillars show the major
10-year cycles of your life, calculated
from your birth date and gender.
Each pillar shows:
- Age range
- The 干支 (stem and branch) governing
that decade - Ten God relationships
Click any Luck Pillar to see the
10 Annual Luck years for that decade.
Annual Luck (세운)
Click on any Luck Pillar to reveal
the 10 annual luck years within
that decade.
Each year shows its governing 干支
and Ten God relationship to your
Day Master.
Click any year to see the Monthly
Luck for that specific year.
Monthly Luck (월운)
Click on any Annual Luck year to
reveal the 12 monthly luck periods
for that year.
Each month is defined by a solar term
(절기) and shows its governing 干支.
Important Note
This calculator provides your BaZi
chart based on the solar calendar
and accurate solar term data.
For the most accurate and personalized
reading, always consider your complete
chart as a whole — not just your
Day Master alone.
Want to learn more about BaZi?
Explore our complete guides at
Ondo Destiny.