BaZi calculator · Four Pillars of Destiny · free
Enter your date, time and place of birth to see your BaZi chart — the year, month, day and hour pillars with their stems and branches, your Day Master, the hidden stems, the Ten Gods and the balance of the five phases. Calculated from the solar terms, without an account and without AI.
A BaZi chart is a table, not a wheel of planets. The year pillar changes at Li Chun, the month pillars at the twelve Jie solar terms, the day pillars follow an unbroken cycle of sixty days, and the hour pillars divide the day into twelve two-hour periods. The stems of the month and hour follow fixed rules from the stems of the year and day.
AstroSensus calculates the solar terms from the Sun’s astronomical position, to the minute, and shows the rules it used next to the result. The ten-year luck pillars (Da Yun) are shown with the rule used for their start. Strength of the Day Master, the structure of the chart (Ge Ju) and the useful element (Yong Shen) are not shown: schools judge them differently, and we would rather show nothing than one school’s verdict without saying so.
Historical time zones of the birthplace are applied automatically — for example UTC+7:30 in Singapore and Malaysia until 1981 — and the result can also be shown in solar time, the time of the Sun at the birthplace’s longitude.
Year, month, day and hour — each with its Heavenly Stem and Earthly Branch, in Chinese characters and in plain words.
The stem of the day pillar, the point the whole chart is read from, with the image the tradition gives it.
The stems hidden in each branch and how every stem relates to your Day Master.
How many signs of Wood, Fire, Earth, Metal and Water the chart holds, and which pillars combine or clash.
Want your Western birth chart too — planets, houses and aspects? Open the free birth chart
Korea and Japan read the same Four Pillars under their own names. The pillars are calculated the same way; only the names differ.
BaZi (八字, “eight characters”), also called the Four Pillars of Destiny, is a traditional Chinese way of reading the moment of birth. Each of the four pillars — year, month, day and hour — has a Heavenly Stem and an Earthly Branch, eight characters in all. It is a symbolic system: it describes how a tradition reads a chart, not proven facts about a person.
No. The popular Chinese zodiac animal is only the branch of the year pillar — one of eight characters. BaZi also looks at the month, the day and the hour, and the stem of the day, called the Day Master, is the centre of the whole chart.
The BaZi year begins at Li Chun, the start of spring, when the Sun reaches 315° of longitude — around 4 February — not at the lunar New Year. The months begin at the solar terms too, so someone born in late January belongs to the previous BaZi year.
Then the calculator shows three pillars — year, month and day — and leaves the hour pillar empty instead of guessing it. The hour pillar changes every two hours.
The year starts at Li Chun and the months at the Jie solar terms, calculated from the Sun’s position. The day changes at midnight and the time is the official local time of the birthplace, with daylight saving time. On the result you can switch to a day that starts at 23:00 or to solar time — schools differ on these points, and the page always shows which rule was used.
Yes. The time-zone history of the birthplace is applied automatically: Singapore and Peninsular Malaysia kept UTC+7:30 until the end of 1981 (with other offsets before and during the war), Hong Kong had summer time in most years until 1979, and India used UTC+6:30 during the war. Enter the time as it was on the clock. You can also switch the result to solar time: Singapore lies near 104° East, so its clock runs about an hour ahead of the Sun, which can change the hour pillar.
Not in our database. It stays in your browser session for up to two hours and is deleted when you press “Forget my data”. Only if you create an account does it become the first person in that account.