How to use it
What this tool is useful for
Calculate the traditional bone-weight total from lunar birth data and read the corresponding historical verse with clear modern limits.
BaZi
Bone Weight Song Calculator and Source Text
Reproduce the folk Bone Weight Song lookup from four visible table values, inspect the converted lunar fields, and read the matched historical verse with explicit limits instead of treating it as a life forecast.
Output preview
See the report shape before you start
The output below shows what this tool can document. Input details and examples are explained in the next section.
What you will see
2 input details explained below
- 1
Converted birth data
Shows the lunar date and traditional time period used in the calculation.
- 2
Weight breakdown
Lists the year, month, day, and time contribution separately.
- 3
Historical verse
Displays the matched poem and a restrained cultural explanation.
What you need before you start
Before starting, confirm that dates, times, and other details are accurate, and note which items are required or optional. Do not replace missing required information with a guess.
Birth date
date required
Establishes the calendar and timing data used by the calculation.
Example: 1990-06-15
What to enter: Use a valid calendar date that is not in the future.
If you leave it out: The tool cannot produce a reliable result without this required value.
Birth time
time required
Adds the time pillar or time-dependent detail when the method supports it.
Example: 12:00
What to enter: Use a valid local time; leave it blank only when this item is optional.
If you leave it out: The tool cannot produce a reliable result without this required value.
How it works
This tool uses the details you enter on the page to produce a result. It is free to use, and your information is not sent to a third-party AI service.
Complete example
Worked example: four table values and the matched verse
This fictional date demonstrates the Gregorian-to-lunar conversion and every addition used by the folk table. The local clock time is treated as Wu period; no location-based correction is applied.
Example details
- Gregorian birth date
- 1990-06-15
- Local clock time
- 12:30
- Mapped to 午 (Wu) period.
Example result
- Converted record
- Lunar 1990, month 5, day 23 · 午 period
- Table values
- Year 0.9 + month 0.5 + day 0.8 + time 1.0
- Sum and matched verse
- 3.2 liang · verse 3.2
- The total selects a historical verse row; it does not measure a person.
How to check it again
Check the lunar month, lunar day, hour branch, and all four table rows before adding them. Repeating the same input should return the same 3.2 result; a different conversion must remain a separate candidate record.
What this example cannot prove
A higher total is not a better life. The matched verse is reproduced as folk-history material and cannot support claims about lifespan, illness, poverty, wealth, marriage, education, or status.
Use cases
Recommended
Study a folk calculation
Use the result to see how year, lunar month, lunar day, and time weights combine.
Recommended
Compare historical wording
Read the verse as cultural material and compare it with broader BaZi methods.
Make high-stakes decisions
A single weight and poem cannot determine health, income, marriage, education, or career decisions.
What the result is based on
Solar-to-lunar conversion
Converts the entered date to the lunar calendar before looking up the component weights.
Four weight tables
Uses the sexagenary year, lunar month, lunar day, and traditional time-period tables.
Verse lookup
Maps the summed weight to one of the traditional poem entries without inventing a new score.
What you will see
Converted birth data
Shows the lunar date and traditional time period used in the calculation.
Weight breakdown
Lists the year, month, day, and time contribution separately.
Historical verse
Displays the matched poem and a restrained cultural explanation.
What you can do next
Verify the lunar conversion
Check uncertain dates or birth times before relying on the displayed historical verse.
Compare methods carefully
Use a full Four Pillars chart when you need a more detailed traditional framework.
Folk method
Bone weight is a traditional folk system, not scientific measurement or evidence of a fixed life outcome.
What the Bone Weight Song records
The Bone Weight Song is a folk lookup method. It maps the sexagenary lunar year, lunar month, lunar day, and two-hour birth period to four fixed table values, adds them, and uses the total to find a historical verse. The units called liang and qian are table units, not a body measurement or a scale of life quality.
Circulating verse collections contain wording differences and fatalistic claims about poverty, lifespan, family, illness, rank, and wealth. This page preserves the matched text for cultural study. It does not rewrite the verse as a modern health, financial, relationship, education, or career finding.
How to reproduce the calculation step by step
Keep the input, calendar conversion, and every lookup value together. A verse by itself cannot reveal where two calculators differ.
- Enter a valid Gregorian date and the clock time at the birthplace. The tool does not convert a time zone, daylight-saving rule, longitude, or true solar time.
- The entered civil date and time are converted to the lunar year, month, day, and hour branch used for the result.
- Look up the sexagenary-year, lunar-month, lunar-day, and hour-branch values in four fixed tables and preserve each value.
- Add the four values, round the displayed total to one decimal place, and use that key to retrieve the historical verse.
- Save the birth details and calendar method, then check a boundary case with another calendar tool before comparing interpretations.
Which assumptions can change the table entry
The addition is simple, but the original date, calendar convention, clock boundary, and source-table edition can change the matched key.
| Source of difference | Review action |
|---|---|
| Gregorian and lunar dates are mixed | Preserve the original Gregorian input and the converted lunar fields; do not type a lunar date into the Gregorian field. |
| Birth close to 23:00 or an hour boundary | Keep the exact local clock time and compare the declared day-change and hour-branch conventions. |
| Time zone or daylight saving is uncertain | Resolve the historical local clock time first; this tool does not infer or correct it. |
| Leap-month handling differs | Record the converted month and the rule used by each calculator before comparing totals. |
| Verse wording or table edition differs | Treat it as a source-history difference; do not select the more flattering entry as fact. |
| One total is larger | Use totals only as lookup keys. A larger value is not evidence of a better life or lower risk. |
How to handle harmful claims in the source verse
When a verse says that a person will be short-lived, ill, poor, separated, powerful, or inevitably wealthy, label it as pre-modern folk narrative. The lookup table has not been calibrated as a measure or probability for any of those outcomes.
Stop reading if the text causes distress. Use records and qualified help from the relevant domain for health, safety, money, law, education, work, or relationships. The verse must never delay care, justify discrimination, pressure another person, or authorize an irreversible decision.
Will this match the older calculator?
No. The older calculator estimated a value from the Gregorian month and day. This page converts to the lunar calendar and then uses four traditional lookup tables. Circulating table and verse editions can differ, so the page does not claim that one edition is the only correct text.
Does a higher bone weight mean a better or guaranteed life?
No. Bone weight is a compact folk method with historical verses, not a scientific measure or a fixed verdict. Read the calculation as cultural material and do not use it for health, financial, relationship, or career decisions.
Why can the same birth date produce a different bone-weight result?
The traditional table depends on the converted lunar year, month, day, and time branch. A time-zone, calendar, or hour-branch difference changes the total. Keep the conversion record and treat the verse as historical folk material, not a measurement of ability, health, status, or future success.
What calculation record should I keep?
Save the entered Gregorian date and local time, birthplace or time zone, the converted lunar year, month, day, and hour branch, every table weight, and the final total. Record the tool version and whether the time was approximate. This lets another calculator reproduce the number and shows exactly where a disagreement begins. Do not keep only the verse, because the verse cannot reveal a calendar or boundary error. The record remains a folk-calculation reference and does not measure ability, health, social status, or future success.
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