How to read a BaZi chart in six steps
Identify where each field comes from before interpreting it: the day master is the day stem, hidden stems belong to their branches, and element percentages are weighted totals across four pillars. Follow the six steps below and note what each character and number refers to.
Check the inputs
Open the receipt in the free BaZi calculator and compare the calendar, time precision, time zone and correction with your birth record.
Find the four pillars
Read each column by its label. The stem sits above the branch.
Find the day master
Take the stem of the day pillar as the reference.
Read each branch, then its hidden stems
Keep every hidden-stems line with its own pillar.
Read the element percentages last
They are weighted totals and appear only when all four pillars exist.
Keep gaps open
Carry an unknown hour into your note instead of filling it.
Check the receipt before the characters
A lunar birthday entered as a Gregorian date is a different date, however carefully the minute was copied. The receipt shows that before you spend time on the symbols. Check each line against your record:
- Input record: the calendar you chose and the date as you entered it, with Leap month if you selected it.
- Calendar conversion: the solar (Gregorian) date the calculation used.
- Birth-time precision: the option you chose, with the clock time or the two-hour period when you gave one.
- Time zone: the IANA zone and the UTC offset used.
- Coordinate correction: whether you confirmed it, and whether it moved the time into another day or two-hour period.
- Engine version, so a later calculation can be compared on the same basis.
Fix a wrong line and calculate again before reading further. The receipt shows which time was used; it cannot turn an estimated time into a documented one.
Where are the four pillars on a BaZi chart?
Put simply, a BaZi chart is four labeled columns, year, month, day and hour, each a heavenly stem above an earthly branch. Another calculator may run them the other way, so read the labels, not the order from the left.
The Hong Kong Observatory calls the four pairs together the Eight Characters; the hidden stems and totals printed around them do not add a ninth. New to the four pillars? Start with what is BaZi.
| What to find | Where to look | What to write down first |
|---|---|---|
| Four pillars | The year, month, day and hour columns | Each complete stem-branch pair |
| Day master | The stem of the day pillar | One stem and its element |
| Month context | The branch of the month pillar | The month branch and the solar-term period of the birth |
| Hidden stems | The hidden-stems line in each column | The pillar and branch they belong to |
Follow along with the free tool.
Try the BaZi toolWhich character is the day master?
In the example the day pillar is 甲子: Jia 甲 is the day stem and the day master, Zi 子 the day branch. Do not call both characters the day master, and do not call it Water because 子 is Water. The calculator repeats the day master with its element; check it against the day column.
- Day pillar
- The stem and branch of the day column as one pair: 甲子 here.
- Day master
- Also called: Day stem
- The stem of the day pillar, the reference for later comparisons: 甲, Wood.
- Day branch
- The lower character of the day pillar: 子. Its element is not the day master's.
A Jia day master is still Jia Wood when another element has a larger share, and the zodiac animal does not identify it. Record the day stem and its element first; that stem is the reference for comparing the other stems and branches.
Read the element percentages last
Only a four-pillar result shows element percentages. Each visible stem adds 1; hidden stems add 0.5, 0.3 and 0.2 in listed order, as far as the branch has entries. Branches count only through their hidden stems, so tallying the eight visible characters will not reproduce the bars.
- Wood 2.0: the day stem 甲 (1), 乙 in 卯 (0.5), 甲 in 寅 (0.5).
- Fire 1.8: the hour stem 丙 (1), 丁 in 午 (0.5), 丙 in 寅 (0.3).
- Earth 1.5: the month stem 己 (1), 己 in 午 (0.3), 戊 in 寅 (0.2).
- Metal 1.0: the year stem 庚 (1).
- Water 0.5: 癸 in 子 (0.5).
The bars are shares of that calculation, not amounts of personality or probabilities. A large bar does not establish day-master strength: that also involves the season, roots and relationships. The free calculator does not label a day master as strong or weak.
What changes when the hour is unknown?
Choose unknown birth time and the result shows the year, month and day pillars calculated from the date, their hidden stems and the day master. It leaves out the hour pillar and element totals. Start with the fields shown and record “birth time unknown”; do not pick an hour to complete the chart.
If a reliable time turns up later, calculate again, check the three pillars and keep both results. Near a solar-term or day boundary, the existing pillars also need checking.
Why does another chart look different?
Start with the conditions behind each result, not with the wording of any interpretation: calendar, local time, time zone, precision and coordinate correction. Change one setting at a time, then compare the four pairs before any totals, because weighted totals can differ even when the pairs agree.
If the other service does not explain its method, that part stays open; a more appealing interpretation does not settle it. Save both sets of inputs and results, separating the conditions you have checked from rules you still cannot verify.
A reading note you can check later
Finish with a short note that gives each fact its own line.
Reading note: example chart
- Day pillar: 甲子
- Day master: 甲, Wood
- Month branch: 卯
- Element shares, four pillars: Wood 29%, Fire 26%, Earth 22%, Metal 15%, Water 7%
- Birth time: known (if unknown: no hour pillar, no element shares)
- Receipt saved, with the engine version
Once your notes are complete, check these three distinctions:
- The month branch is the branch of the month pillar. Reading its seasonal role also requires the solar-term boundary; the calendar month alone is not enough.
- The ten-year periods shown on other sites are usually called luck cycles. They are not a fifth natal pillar, and the free calculator does not show a luck-cycle table.
- Find the day master by its position in the day pillar. Element shares come from the whole chart, so keep these two fields separate when comparing results.
Reading a BaZi chart: common questions
What should I look at first on a BaZi chart?
The calculation receipt. Once the calendar, time precision, time zone and correction match your record, find the labeled pillars and the stem of the day pillar.
Is my day master the element with the highest percentage?
No. The day master is the stem of the day pillar, found by position; the percentages are weighted totals across the four pillars.
Are hidden stems part of the eight characters?
No. The eight characters are the four stems and four branches you can see. Hidden stems sit inside the branches and never add a pillar.
Why do two BaZi calculators give different charts?
Compare the conditions first: calendar mode, time zone, time precision and correction. Then compare the four pairs before any totals. Different inputs give a different chart, so any reading built on them differs too.
Sources and scope
- Multifate BaZi calculator: The public calculator and its calculation receipt are the reference for the fields, input options and weighting described here; the example chart's values come from its engine.
- Hong Kong Observatory: Heavenly Stems and Earthly Branches: Calendar reference for stem-branch notation and the year, month, day and hour pairs called the Eight Characters.
- National Astronomical Observatory of Japan: Ten Heavenly Stems: Used to check the ten stems from Jia 甲 to Gui 癸.
