FAQ

Answers to common questions about calculating and reading a Four Pillars chart.

How accurate is a BaZi calculator?

The calculator follows published calendar rules. Results depend on your birth details and the settings you choose. Near a solar term or a day boundary, a few minutes can change a pillar. BaZi interpretations are cultural and symbolic.

How do I read my BaZi chart?

Start with the Day Master, the upper character in the day column. Then look at the other stems and branches, the hidden stems and the Five Elements distribution.

What is my Day Master?

Your Day Master is the Heavenly Stem of your day pillar. It identifies one of the Five Elements and its yin or yang quality.

How are the Four Pillars calculated?

Each pillar pairs a Heavenly Stem with an Earthly Branch. Lìchūn sets the year boundary, twelve solar terms set the month boundaries, and the selected day boundary sets the day pillar.

Can I calculate BaZi without a birth time?

Yes. Select the unknown-time option to see the pillars that can be determined from the date. A boundary on that date can make some pillars uncertain.

What is true solar time in BaZi?

True solar time estimates the position of the Sun at your birthplace. The calculator uses longitude and the equation of time to adjust local standard time.

How is BaZi different from Western astrology?

BaZi uses a Chinese calendar of stems, branches and solar terms to build four pillars. Western astrology typically uses the positions of the Sun, Moon and planets across zodiac signs and houses.

How does the calculator handle an overseas birth?

Choose the birth city and enter the time shown on the original record. The calculator uses that city’s historical time zone, accounts for daylight saving, and shows the corrections with the result.

Why do two calculators show different pillars?

Compare the birth time zone, the true solar time setting, and the 23:00 or midnight day boundary. Year and month pillars can also differ if the calculators use different solar-term rules.

Can I enter a leap month in the lunar calendar?

Yes. Select Lunar and mark Leap month if your birth record names the leap month. This is distinct from the regular month with the same number.

How do I share a chart?

Select Share this result and copy the link. It contains the birth details needed to recreate the chart, so share it only with people you choose.

Calculator