Calculate your Four Pillars with true solar time.
Enter your birth date, time, and city. Jianji corrects for longitude and historical time zones, then generates your complete Bazi chart instantly in the browser.
What is Bazi Paipan (八字排盘)?
Paipan means "arranging the chart." Your birth data is converted into Four Pillars—Year, Month, Day, and Hour—each containing a Heavenly Stem and an Earthly Branch. These eight characters form the structural basis of your reading.
Why true solar time matters
Clock time is a political convention. A baby born at 11:50 in Urumqi and one born at 11:50 in Shanghai experienced different solar positions. Jianji corrects for birthplace longitude and historical time-zone rules before calculating the Hour Pillar.
What your free chart includes
Day Master identification, Five Elements balance, Ten Gods relationships, a personality portrait, today's energy rhythm, family-pattern findings, and past-experience verification prompts—all calculated locally in your browser.
5,000+ cities supported
The built-in location database covers cities across China, Southeast Asia, Europe, North America, and beyond. Each entry carries precise coordinates for solar-time correction.
Private by design
No account required. No data uploaded. Your birth information is processed entirely in your browser and stored only on your device.